BULLETIN NUMBER 29 TABLE OF CONTENTS PAGE SEISMICITY OF THE SOUTHEASTERN UNITED STATES DURING 1994. . . . . . . . . . . 1 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 2 References. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SEUSSN EARTHQUAKE CATALOG STATISTICS. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 7 SOUTHEASTERN U.S. EARTHQUAKES DURING 1994. . . . . . . . . . . . . . . . . . . .. . . . 13 SOUTHEASTERN U.S. RESERVOIR RELATED EARTHQUAKES DURING 1994 . . . . . . 29 SEISMIC STATION LISTING AND NETWORK MAPS . . . . . . . . . . . . . . . . . . . . . . . . . 33 ACCESSING DIGITAL WAVEFORM DATA AND OTHER INFORMATION FROM THE VIRGINIA TECH SEISMOLOGICAL OBSERVATORY. . . . . . . . . . . . . . . . . . . . . . . . . 41 DEFINITIONS AND NETWORK OPERATOR CODES . . . . . . . . . . . . . . . . . . . . . . . . . . 43 BIBLIOGRAPHY OF SOUTHEASTERN U.S. SEISMICITY . . . . . . . . . . . . . . . . . . . . . 45 APPENDIX A: The August 6, 1994, Coastal North Carolina Earthquake . . . . . . . . . . . . . . . 51 APPENDIX B: Addenda. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 APPENDIX C: Errata. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 MAILING LIST. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 FIGURES 1. Epicenter Map for the Report Period. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 3 2. Epicenter Map for the Report Period (Scaled to Magnitude) . . . . . . . . . . . . . . . . . . . . . . 4 3. Epicenter Map for the Period from July 1977 through this Report Period. . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4. Epicenter Map for the Period from July 1977 through this Report Period (Scaled to Magnitude, M * 3.0) . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 6 5. Focal Depth Distributions of Southeastern U.S. Earthquake. . . . . . . . . . . . . . . . . . . . . . 8 6. Magnitude Distributions of Southeastern U.S. Earthquakes . . . . . . . . . . . . . . . . . . . . . 9 7. Magnitude Recurrence Relation for the Southeastern U.S. . . . . . . . . . . . . . . . . . . . . . . 10 8. Cumulative Strain Factor Histories for the Southeastern . . . . . . . . . . . . . . . . . . . . . . . 11 9. Epicenter Density Contour Map (Scaled to Magnitude, M * 120) . . . . . . . . . . . . . . . . . 12 10. Seismic Stations Operating During Report Period . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 11. Georgia Tech - Geological Survey of Alabama Seismic Network . . . . . . . . . . . . . . . . . 36 12. South Carolina Seismic Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 13. Center for Earthquake Research and Information - SARSN . . . . . . . . . . . . . . . . . . . . . 37 14. Tennessee Valley Authority Seismic Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 15. University of Florida Seismic Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 16. Virginia Tech Seismic Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 17. University of North Carolina-Chapel Hill Seismic Network . . . . . . . . . . . . . . . . . . . . 39 TABLES 1. SEUSSN Report Period/Cumulative Earthquake Catalog Statistics. . . . . . . . . . . . . . . . . 7 2. Estimates of Completeness for the Southeastern United States. . . . . . . . . . . . . . . . . . . . 9 SEISMICITY OF THE SOUTHEASTERN UNITED STATES DURING 1994 There were 58 earthquakes (0.0 ¾ M ¾ 3.6) located within the SEUSSN monitoring area during 1994. Of those, 10 had felt reports. Earthquakes reported included 6 in Alabama (1 felt; 4 May 09:12, mb(Lg)= 3.0, MD= 3.3, MMI= IV), 1 in Delaware (23 April 09:09, MD= 2.0, MMI= felt), 6 in Georgia (1 felt; 5 April 22:21, mb(Lg)= 3.2, MD= 3.4, MMI= V), 1 in Maryland (28 October 02:04, MD= 2.7, MMI= felt), 1 in North Carolina (6 August 19:54, mb(Lg)= 3.6, MD= 3.8, MMI= V), 17 in South Carolina (4 felt; largest was 29 January 09:54, MD= 2.9, MMI= II), 21 in Tennessee (1 felt; largest was 16 April 20:10, MD= 1.5, MMI= V), 3 in Virginia, and 2 in West Virginia. Figures 1 and 2 are epicenter maps of tectonic earthquakes (M „ 0) located within the region during the report period. Figures 3 and 4 are cumulative epicenter maps for the 17.5 year period from July 1977 through December 1994 (SEUSSN Bulletins 1 through 29). SEUSSN EARTHQUAKE CATALOG STATISTICS includes report period and cumulative earthquake catalog statistics, focal depth distribution plots, magnitude distribution plots, estimates of catalog completeness, a magnitude recurrence relation, cumulative strain factor history plots, and an epicenter density contour map. SOUTHEASTERN U.S. EARTHQUAKES DURING 1994 lists hypocentral parameters, magnitudes, and arrival times for tectonic earthquakes (i.e., not reservoir related) in the southeastern United States. The largest earthquake for the report period was an mb(Lg)= 3.6 event (6 August 19:54) that was felt over an area of 24,000 square kilometers with the highest intensities of V being reported from the towns of New Bern and Washington, North Carolina. Appendix A includes an abstract from the 1994 Eastern Section, Seismological Society of America Meeting in Columbia, South Carolina, that discusses this event. SOUTHEASTERN U.S. RESERVOIR ACTIVITY DURING 1994 lists hypocentral parameters for 15 earthquakes near the Monticello and Keowee Reservoirs in South Carolina. The Keowee Reservoir earthquake of 9 August at 04:12 was felt locally. SEISMIC STATION LISTING AND NETWORK MAPS contains a listing of seismic stations operating during the report period and maps showing the major network operators in the region. The number of stations operating during 1994 was 104. The SEUSSN monitoring area is considered to include all of Florida, Georgia, Alabama, South Carolina, North Carolina, Virginia, West Virginia (south of latitude 37.72 deg N), Maryland, and Delaware; and includes Tennessee and Kentucky - east of longitude 87 degrees West (see Figure 10). ACCESSING WAVEFORM DATA AND OTHER INFORMATION AT THE VIRGINIA TECH SEISMOLOGICAL OBSERVATORY describes how to access, by the computer Internet, digital waveforms, earthquake catalogs, and other data from the Virginia Tech Seismological Observatory. Software is now available to convert network triggered waveform files in the SUDS format to the SAC format. DEFINITIONS AND NETWORK OPERATOR CODES contains definitions of various terms and abbreviations used in the Bulletin as well as a listing of codes for network operators and/or contributors. APPENDIX A includes an abstract on the 6 August, New Bern, North Carolina, earthquake listed above. APPENDIX B from the Tennessee Valley Authority contains locations and magnitudes for the last three months of 1989 and all of 1990. APPENDIX C lists changes and corrections to earthquakes listed in previous SEUSSN Bulletins. Acknowledgments This report is the twenty-ninth SOUTHEASTERN UNITED STATES SEISMIC NETWORK BULLETIN and covers the period from January through December, 1994. The organizations supplying data for this Bulletin are Charleston Southern University, Delaware Geological Survey, Georgia Institute of Technology, Maryland Geological Survey, University of Memphis (Center for Earthquake Research and Information), Tennessee Valley Authority, United States Geological Survey, University of Florida, University of South Carolina, Virginia Department of Mines, Minerals, and Energy - Division of Mineral Resources, Virginia Polytechnic Institute and State University (Virginia Tech Seismological Observatory), and the Westinghouse Savannah River Company. In addition to the support furnished by the host institutions of the network contributors, partial or full support by other agencies for the operation of portions of the SEUSSN is gratefully acknowledged. The agencies providing support to the members of SEUSSN are as follows: National Science Foundation, Nuclear Regulatory Commission, Tennessee Valley Authority, United States Geological Survey, Virginia Power. Several of the plots in this report were generated using the Generic Mapping Tools (GMT) software package developed by Wessel and Smith (1991). References Bollinger, G. A., Frederick C. Davison, Jr., Matthew S. Sibol, and Jeffrey B. Birch, (1989), Magnitude recurrence relations for the southeastern United States and its subdivisions, Journal of Geophysical Research, 94, pp. 2857-2873. Chapman, M. C., J. A. Snoke, and G. A. Bollinger, (1988), A procedure for calibrating short-period telemetered seismograph systems, Bulletin of the Seismological Society of America, 78, pp. 2077-2088. Hoaglin, David C., Frederick Mosteller, and John W. Tukey, 1983), Understanding Robust And Exploratory Data Analysis, John Wiley & Sons, New York, NY, 447 pp. Lahr, J. C., (1980), HYPOELLIPSE/VAX: A computer program for determining local earthquake hypocentral parameters, magnitude, and first-motion pattern, U.S. Geological Survey Open-File Report 80-59, 59 pp. Lee, W. H. K., and J. C. Lahr, (1974), HYPO71: A computer for determining hypocenter, magnitude, and first motion pattern of local earthquakes, U.S. Geological Survey Open-File Report 75-311, Revised: January 1974, 134 pp. Lee, W. H. K., and S. W. Stewart, (1981), Principles and Applications of Microearthquake Networks, Academic Press, New York, NY, 293 pp. Nuttli, O. W., (1973), Seismic wave attenuation and magnitude relations for eastern North America, Journal of Geophysical Research, 78, pp. 876-885. Shedlock, Kaye M., (1987), Earthquakes recorded by the South Carolina Seismic Network (1974-1986), U.S. Geological Survey Open-File Report 87-437, 92 pp. Wessel, P. and W. H. F. Smith, (1991), Free software helps map and display data, EOS Trans. Am. Geophys. Union, 72, pp. 441, 445-446. FIGURE 1. Epicenters (circles) for earthquakes (M „ 0.0) in the southeastern United States for this report period. FIGURE 2. Epicenters (circles scaled to magnitude) for earthquakes (M „ 0.0) in the southeastern United States for this report period. FIGURE 3. Epicenters (circles) for earthquakes (M „ 0.0) in the southeastern United States from July 1977 through this report period. FIGURE 4. Epicenters (circles scaled to magnitude) for earthquakes (M „ 3.0) in the southeastern United States from July 1977 through this report period. SEUSSN EARTHQUAKE CATALOG STATISTICS TABLE 1 SEUSSN Report Period/Cumulative Earthquake Catalog Statistics PERIOD: January through December 1994 (1 year) Tectonic Reservoir Number of Earthquakes with M „ 0.0 58 15 Number of Earthquakes with M „ 2.0 22 2 Number of Earthquakes with M „ 3.0 3.0 0 Number of Earthquakes with M „ 4.0 0.0 0 Number of Felt Earthquakes 10 1 Rate of Earthquakes with M „ 0.0 (per year) 58 15 Rate of Earthquakes with M „ 2.0 (per year) 22 2.0 Rate of Earthquakes with M „ 3.0 (per year) 3 0.0 Rate of Earthquakes with M „ 4.0 (per year) 0 0.0 Rate of Felt Earthquakes (per year) 10 1.0 Mean Earthquake Magnitude 1.7 1.3 Median Earthquake Magnitude 1.7 1.3 Number of Earthquakes with Known Dmin ¾ 5.0 11 7 Number of Earthquakes with Known Dmin ¾ 10.0 16 9 Number of Earthquakes with Known Dmin ¾ 25.0 28 14 Number of Earthquakes with Known ERH ¾ 5.0 km 44 14 Number of Earthquakes with Known ERZ ¾ 5.0 km 36 9 Number of Blasts or Questionable Events Reported 0 Number of Events Outside the SEUSSN Area Reported 0 Number of Seismograph Stations Operating 104 Largest Earthquake: 6 August 1994; 19:54Z - NEW BERN, NC (Lg)= 3.6, MD= 3.7, MMI= V PERIOD: July 1977 through December 1994 (17.5 years) Tectonic Reservoir Number of Earthquakes with M „ 0.0 1425 706 Number of Earthquakes with M „ 2.0 526 195 Number of Earthquakes with M „ 3.0 86 9 Number of Earthquakes with M „ 4.0 7 0 Number of Felt Earthquakes 183 21 Rate of Earthquakes with M „ 0.0 (per year) 81 40 Rate of Earthquakes with M „ 2.0 (per year) 30 11 Rate of Earthquakes with M „ 3.0 (per year) 4.9 0.5 Rate of Earthquakes with M „ 4.0 (per year) 0.4 0.0 Rate of Felt Earthquakes (per year) 10 1.2 Mean Earthquake Magnitude 1.7 1.4 Median Earthquake Magnitude 1.7 1.4 Number of Earthquakes with Known Dmin ¾ 5.0 111 86 Number of Earthquakes with Known Dmin ¾ 10.0 255 123 Number of Earthquakes with Known Dmin ¾ 25.0 764 164 Number of Earthquakes with Known ERH ¾ 5.0 1243 193 Number of Earthquakes with Known ERZ ¾ 5.0 1065 132 Number of Blasts or Questionable Events Reported 179 Number of Events Outside the SEUSSN Area Reported 17 Largest Earthquake: 27 July 1980; 18:52 - Sharpsburg, KY mb= 5.2, MMI= VII FIGURE 5. Focal depth distributions of southeastern U.S. earthquakes. The upper half of the figure shows the interval (left) and cumulative (right) depth distributions for the current report period (M „ 0.0, known ERZ ¾ 5.0 km, Dmin ¾ 20 km, and free depth determination), while the lower half of the figure is a similar display for earthquakes reported during the period from July 1977 through this report period. Displayed above both interval distributions is a box plot (Hoaglin and others, 1983, pp. 58-65). Indicated are the mean (star), the 25% and 75% quartile (box outline), the median (center bar), the upper and lower adjacent values (small vertical bars), and outliers small squares). On the cumulative depth, arrows show the 10% and 90% depths. TABLE 2 Estimates of Completeness (Years) By Magnitude For The Southeastern United States And Subregions (Bollinger and Others, 1989) MAGNITUDE 2.25 2.75 3.25 3.75 4.25 4.75 5.25 5.75 6.25 6.75 Southeastern US 6 10 15 85 145 145 215 215 215 215 Valley & Ridge and Blue Ridge 9 10 20 75 110 215 215 215 215 215 Piedmont 10 10 115 215 215 215 215 215 215 215 Coastal Plain 10 10 60 145 145 215 215 215 215 215 Giles County, VA 10 15 15 30 30 215 215 215 215 215 Central Virginia 15 60 215 215 215 215 215 215 215 215 Eastern Tennessee 5 10 10 85 115 115 215 215 215 215 Charleston, SC 10 70 70 70 130 215 215 215 215 215 FIGURE 6. Magnitude distributions of southeastern U.S. earthquakes. The left half of the figure shows the interval magnitude distribution for the report period while the right half of the figure shows a similar distribution for earthquakes from July 1977 through this report period. Displayed above both distributions is a box plot (Hoaglin and others, 1983, pp. 58-65). Indicated are the mean (star), the 25% and 75% quartile (box outline), the median (center bar), the upper and lower adjacent values (small vertical bars), and outliers (small squares). FIGURE 7. Magnitude recurrence relation for the southeastern United States. The upper half of the figure shows the seismicity map with historical (circles) and network (X's) epicenters for the time period 1772-1986. The lower half of the figure shows a plot of Log(NI) (interval number of earthquakes per year, M ± 0.25) versus mb(Lg) for the southeastern United States. The maximum likelihood line includes 95% confidence intervals (Bollinger and others, 1989). FIGURE 8. Cumulative strain factor histories for the southeastern United States. The upper half of the figure shows the cumulative strain factor history for the report period, while the lower half of the figure shows a similar plot for earthquakes from July 1977 through this report period. FIGURE 9. Epicenter density contour map for earthquakes (circles scaled to magnitude; M „ 2.0) in the southeastern United States from July 1977 through this report period. Contours represent number of earthquakes within 50 km of a grid point scaled to number per 10,000 square km; grid spacing is 0.2 degrees. Lowest and highest contours are 5 and 25 events per 10,000 square km, respectively (contour interval is 5). SOUTHEASTERN U. S. EARTHQUAKES DURING 1994 Events are listed chronologically (this also applies to multiple hypocenter locations for the same event). All times are Universal Coordinated Time. Most entries in the listing are self-explanatory. Items that might require further explanation are defined in the section entitled DEFINITIONS AND NETWORK OPERATOR CODES. ***** 1994 JANUARY 12; 16:03 - ATHENS, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940112 160354.4 35.497 84.483 8.2 17 22 196 0.5 D D/D 0.6 -43 0.2 0.7 A 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 22.2 276 iP 16:03:58.64 ( 0.16 ) iS 16:04:01.24 (-0.23 ) TVA ORT 48.5 19 eP :04:02.84 ( 0.04 ) iS :08.64 (-0.31 ) TVA OLT 62.5 232 iP :05.39 ( 0.29 ) iS :13.05 ( 0.12 ) TVA CRTN 97.2 36 iP :10.83 ( 0.05 ) eS :22.49 (-0.27 ) TVA PDTN 126.6 259 P? :14.99 (-0.28 ) iS :29.64 (-0.89 ) TVA ABTN 153.4 287 iP :19.12 (-0.25 ) eS :36.59 (-1.03 ) TVA FDKY 185.8 321 eP :24.64 ( 0.31 ) eS :48.29 ( 2.09 ) TVA MSAL 212.2 251 P? :27.84 (-0.53 ) eS :53.37 ( 0.18 ) TVA TCT 283.3 282 eP :38.09 ( 0.54 ) eS :05:11.07 ( 2.00X) ***** 1994 JANUARY 13; 06:41 - ATHENS, TENNESSEE ***** TVA Possible aftershock of 1/12/94 16:03 event. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940113 064123.3 35.351 84.732 13.6 7 18 229 0.1 D D/D 2.7 -68 0.4 1.9 B 0.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 18.4 2 eP 06:41:27.48 ( 0.23 ) iS 06:41:30.09 (-0.01 ) TVA OLT 34.7 230 eP :29.62 (-0.08 ) iS :34.37 ( 0.02 ) TVA PDTN 102.0 266 eS :52.55 ( 0.15 ) TVA ABTN 138.2 296 eP :46.02 ( 0.34 ) iS :42:01.87 (-0.12 ) ***** 1994 JANUARY 29; 06:48 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.0. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940129 064826.9 32.982 80.163 6. 4 8 192 0.0 C 1.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC SVS 8.1 259 ePu 06:48:29.09 ( 0.01 ) eSu 06:48:29.78 (-0.93X) USC RGR 8.7 199 iPu :29.10 ( 0.00 ) iSu :29.60 (-1.15X) USC BCS 9.2 91 iPd :29.35 ( 0.00 ) iSu :31.35 ( 0.15X) USC HBF 16.3 256 iPd :30.25 (-0.01 ) iSd :32.16 (-0.63X) Additional Data: CSU RGR P 06:48:29 CSU MGS P :29 CSU DRC P :32 CSU WAS P :32.5 ***** 1994 JANUARY 29; 09:54 - SUMTER, SOUTH CAROLINA ***** CSU Felt (II - 3 reports) at Sumter, SC. Magnitude 2.0. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940129 095444.1 33.852 80.149 2.0 12 73 260 0.1 D 0.9 360 0.9 155 2.9 2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC COW 72.9 225 iPd 09:54:55.60 (-0.18 ) iSu 09:55:04.65 ( 0.02 ) USC LHS 92.4 319 iPu :58.92 ( 0.04 ) iSu :09.93 (-0.16 ) USC MR02 106.9 291 iPd :55:01.27 ( 0.03 ) iSu :13.87 (-0.37X) USC JSC 113.0 295 iPd :02.43 ( 0.24 ) iSu :15.92 ( 0.01 ) USC VRN 116.6 219 iPu :02.71 ( 0.00 ) iSu :15.03 (-1.80X) USC MR07 122.9 298 iPu :04.03 ( 0.32 ) iSu :18.44 (-0.15 ) USC MTT 138.2 265 iPu :06.27 ( 0.13 ) iSd :22.91 ( 0.04 ) USC PRM 206.1 277 iPd :15.93 ( 0.53X) iSd :41.10 ( 1.93X) Additional Data: CSU TWB P 09:54:56.5 CSU DRC P :59 CSU RGR P :55:01 CSU WAS P :03 ***** 1994 JANUARY 31; 14:33 - BARNARDVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940131 143308.9 35.756 84.599 10.2 11 29 133 0.3 C B/C 0.7 -39 0.3 0.9 A 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 29.0 203 iP 14:33:14.07 (-0.08 ) TVA ORT 31.5 57 ePd :14.22 (-0.35 ) iS 14:33:19.17 ( 0.44 ) TVA ANTN 73.4 309 eP :21.37 (-0.06 ) S? :31.97 ( 1.37X) TVA OLT 77.6 210 eP :22.37 ( 0.26 ) eS :31.32 (-0.46 ) TVA CRTN 84.3 54 eP :22.87 (-0.29 ) eS :33.37 (-0.23 ) TVA PDTN 125.5 245 eP :29.72 ( 0.26 ) eS :45.12 ( 0.63 ) TVA ABTN 137.2 276 eP :32.07 ( 0.81X) eS :49.52 ( 1.91X) TVA LKGA 148.7 213 eP :33.67 ( 0.62X) eS :51.07 ( 0.36X) TVA MSAL 214.0 242 eP :44.47 ( 1.46X) eS :34:09.42 ( 1.49X) TVA SLTN 235.8 70 eP :46.77 ( 0.63 ) S? :12.07 (-1.29X) TVA TCT 268.2 277 eP :51.87 ( 1.91X) eS :23.32 ( 3.36X) ***** 1994 FEBRUARY 1; 16:17 - JEFFERSON CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940201 161752.6 36.073 83.658 9.2 17 22 153 0.2 C B/C 0.8 -30 0.4 1.1 A 1.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CRTN 21.7 311 iP 16:17:56.84 ( 0.17 ) iS 16:17:59.54 (-0.12 ) TVA ORT 61.1 253 iP :18:02.74 (-0.34 ) iS :18:10.74 (-0.01 ) TVA TQTN 114.6 238 eP :11.64 ( 0.08 ) iS :25.94 ( 0.52 ) TVA ANTN 142.1 275 eP :15.50 (-0.29 ) eS :32.64 (-0.11 ) TVA SLTN 144.1 73 eP :16.14 (-0.02 ) eS :32.94 (-0.45 ) TVA OLT 160.7 231 eP :17.99 (-0.63 ) eS :37.64 ( 0.00 ) TVA PDTN 217.4 247 eS :53.14 ( 0.49 ) TVA ABTN 222.1 265 P? :27.74 (-0.28 ) S? :53.94 ( 0.04 ) TVA LKGA 230.3 226 eP :29.14 (-0.06 ) eS :56.44 ( 0.49 ) ***** 1994 FEBRUARY 4; 07:40 - DEEPWELL, WEST VIRGINIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I VTSO 940204 074032.4 38.236 80.759 10.9 10 72 331 0.2 D D/D 2.1 -77 1.4 1.7 B 2.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) VTSO HWV 72.0 186 eP 07:40:44.56 (-0.15 ) eS 07:40:53.42 ( 0.10 ) VTSO VWV 91.4 159 eP :47.80 ( 0.05 ) eS :58.53 ( 0.05 ) VTSO NAV 102.2 182 eP :49.57 ( 0.20 ) eS :41:01.22 (-0.03 ) VTSO BLA 117.6 165 eP :51.90 ( 0.17 ) eS :04.96 (-0.30 ) VTSO WMV 126.6 189 eP :52.89 (-0.26 ) eS :07.81 ( 0.15 ) ***** 1994 FEBRUARY 19; 08:12 - DAYTON, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940219 081249.8 35.471 85.121 18.5 10 36 89 0.1 C C/B 1.0 -57 0.5 5.5 D 1.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 36.2 82 iP 08:12:56.50 (-0.02 ) eS 08:13:01.53 ( 0.09 ) TVA OLT 36.7 166 iP :56.98 ( 0.36 ) iS :01.43 (-0.18 ) TVA PDTN 69.8 252 eP :13:01.53 (-0.06 ) eS :10.25 ( 0.03 ) TVA ANTN 78.4 353 eP :03.03 ( 0.10 ) eS :12.33 (-0.20 ) TVA ABTN 100.6 297 eP :07.03 ( 0.73 ) eS :18.58 ( 0.21 ) ***** 1994 FEBRUARY 27; 22:34 - NARROWS, VIRGINIA ***** VTSO This event, along with several others too small to be located, are foreshocks to a mainshock at 940227 22:36Z. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I VTSO 940227 223419.3 37.282 80.761 1.5F 8 5 142 0.3 C C/C 2.3 1 1.1 11.6 D 0.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) VTSO NAV 4.7 323 iPc 22:34:19.98 (-0.20 ) eS 22:34:20.59 (-0.18 ) VTSO PWV 26.2 283 eP :24.08 ( 0.14 ) eS :27.91 ( 0.98 ) VTSO WMV 26.8 224 ePd :23.54 (-0.51 ) eS :27.07 (-0.03 ) VTSO BLA 31.2 104 eP :24.61 (-0.22 ) eS :28.83 ( 0.44 ) ***** 1994 FEBRUARY 27; 22:36 - NARROWS, VIRGINIA ***** VTSO There were several small foreshocks and aftershocks associated with this mainshock. Only the foreshock at 940227 22:34Z was large enough to be located. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I VTSO 940227 223642.9 37.279 80.760 2.1F 8 5 141 0.3 C C/C 2.3 -1 1.1 8.9 D 1.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) VTSO NAV 5.0 323 iPc 22:36:43.69 (-0.18 ) eS 22:36:44.41 (-0.11 ) VTSO PWV 26.4 284 eP :47.57 ( 0.00 ) eS :51.62 ( 1.03 ) VTSO WMV 26.7 225 iP :47.30 (-0.32 ) iS :50.77 ( 0.10 ) VTSO BLA 31.0 104 iPc :48.22 (-0.17 ) eS :52.33 ( 0.40 ) ***** 1994 MARCH 20; 06:15 - CLEVELAND, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940320 061540.6 35.309 84.755 23.7 26 23 158 0.4 C C/C 0.4 -52 0.2 0.6 A 2.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 23.1 7 iP 06:15:46.20 ( 0.13 ) TVA OLT 30.2 234 iP :47.18 ( 0.23 ) TVA ORT 78.1 31 eP :53.70 (-0.12 ) iS 06:16:03.91 ( 0.46 ) TVA PDTN 99.7 268 iP :56.80 (-0.28 ) iS :10.10 ( 1.01 ) TVA LKGA 100.4 221 ePd :57.15 (-0.07 ) iS :09.32 (-0.02 ) TVA ANTN 104.9 336 iP :57.94 ( 0.03 ) iS :10.50 (-0.02 ) TVA CRTN 128.8 40 eP :16:01.50 (-0.03 ) eS :17.20 ( 0.41 ) TVA ABTN 138.4 298 iP :02.65 (-0.32 ) iS :19.00 (-0.28 ) TVA EGT 147.4 63 eP- :04.10 (-0.32 ) TVA MSAL 182.4 254 iPd :08.75 (-0.94 ) TVA FDKY 189.1 331 eP+ :10.45 (-0.28 ) iS :32.70 ( 0.00 ) TVA FKT 207.8 285 eP :12.60 (-0.42 ) iS :37.00 ( 0.33 ) TVA LAL 255.2 248 eP :19.39 ( 0.57 ) eS :47.40 ( 0.70 ) TVA HAKY 258.5 321 eP :19.50 ( 0.29 ) eS :48.60 ( 1.23 ) TVA TCT 264.9 288 eP :20.25 ( 0.26 ) S? :50.15 ( 1.42X) TVA SLTN 269.1 61 P? :20.80 ( 0.15 ) ***** 1994 APRIL 5; 02:33 - TRENTON, GEORGIA ***** TVA Foreshock of 940405 22:22Z event. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940405 023343.5 34.933 85.477 11.9 15 48 193 0.2 C B/D 1.0 8 0.3 1.0 A 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA OLT 47.8 60 iP 02:33:52.10 ( 0.21 ) iS 02:33:57.88 (-0.13 ) TVA PDTN 50.8 318 iP :52.30 (-0.06 ) iS :58.85 ( 0.03 ) TVA TQTN 94.1 46 P? :58.85 (-0.33 ) TVA MSAL 109.8 265 eP :34:01.25 (-0.33 ) eS :34:14.72 (-0.06 ) TVA ABTN 120.2 332 eP :02.90 (-0.29 ) eS :18.06 ( 0.49 ) TVA ANTN 139.2 9 iP :05.94 (-0.18 ) S? :22.16 (-0.47 ) TVA ORT 151.9 44 eP :08.35 ( 0.31 ) eS :27.05 ( 1.10X) TVA FKT 165.4 305 S? :29.20 (-0.32 ) TVA LAL 179.1 253 eP :11.80 (-0.41 ) iS :34.90 ( 1.74X) TVA CRTN 204.3 46 eP :16.35 ( 0.27 ) ***** 1994 APRIL 5; 19:47 - TRENTON, GEORGIA ***** TVA Foreshock of 940405 22:22Z event. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940405 194742.8 34.939 85.497 4.8 12 49 191 0.2 C B/D 0.5 -6 0.3 1.4 B 1.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA OLT 49.0 61 iP 19:47:51.55 ( 0.18 ) iS 19:47:57.45 (-0.18 ) TVA PDTN 49.1 319 iP :51.55 ( 0.18 ) iS :57.45 (-0.18 ) TVA MSAL 108.1 265 iP :48:00.75 (-0.35 ) iS :48:14.55 ( 0.10 ) TVA ABTN 118.8 332 eP :02.80 ( 0.05 ) iS :17.70 ( 0.39 ) TVA ORT 152.6 45 P :00.00 (-7.93X) eS :26.50 ( 0.23 ) TVA FKT 163.5 305 P :00.00 (-9.60X) eS :29.00 (-0.15 ) TVA LAL 177.6 252 eP :11.80 ( 0.04 ) iS :34.38 ( 1.49X) TVA FDKY 207.1 353 eP :15.95 (-0.32 ) ***** 1994 APRIL 5; 22:21 - TRENTON, GEORGIA ***** NEIC Felt (V) at Flat Rock and Higdon, Alabama. Felt (III) at Whiteside and (II) at Hixson, Tennessee. Standard deviation 0.6 on 17 of 23 observations. TVA Felt (III) at Whiteside and (II) at Hixson, Tennessee (USGS). SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I NEIC 940405 222159.1 34.961 85.493 5.0F 17 48 3.2 5 TVA 940405 222200.4 34.969 85.491 24.3 27 47 143 0.3 C B/C 0.5 -15 0.2 0.4 A 3.4 3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NEIC PDTN 47.8 317 iP 22:22:09.07 ( 1.4 ) NEIC TQTN 93.4 48 iP :15.56 (-0.2 ) NEIC MSAL 109.0 264 iP :17.50 (-0.6 ) iS 22:22:31.29 ( X) NEIC ABTN 116.8 332 iP :19.36 ( 0.0 ) NEIC MYNC 125.7 84 ePd :20.63 ( 0.0 ) eS :34.60 ( X) NEIC ANTN 136.8 10 iPc :22.36 ( 0.0 ) NEIC ORT 151.2 45 iPd :24.52 ( 0.0 ) eS :43.91 ( X) NEIC LAL 179.0 252 iP :29.00 ( 0.8 ) iS :50.00 ( X) NEIC CRTN 203.5 47 eP :32.04 ( 0.6 ) iS :57.79 ( X) NEIC GOGA 253.5 132 eP :38.21 ( 0.2 ) eS :23:08.12 ( X) NEIC MOTN 291.3 310 eP :42.00 (-0.7 ) iS :20.04 ( X) NEIC PRM 303.6 108 ePn :44.19 (-0.1 ) NEIC SLTN 346.9 61 eP :49.40 (-0.5 ) NEIC JSC 395.9 100 ePn :56.10 ( 0.0 ) NEIC LST 420.3 296 (P) :23:04.80 ( 5.5X ) NEIC ELC 423.7 309 (Pn) :22:58.55 (-1.1 ) NEIC LHS 432.6 96 ePn :23:00.93 ( 0.1 ) NEIC NAV 497.1 57 ePn :07.53 (-1.6X ) NEIC SGS 499.3 112 (P) :12.56 ( 3.2X ) NEIC BLA 520.4 60 (P) :19.04 ( 6.9X ) NEIC HBF 523.7 114 (P) :19.43 ( 7.0X ) NEIC FVM 554.9 309 (Pn) :16.34 (-0.1 ) NEIC MCWV 722.8 42 (P) :50.77 (13.1X ) TVA PDTN 46.9 316 iP 22:22:09.07 ( 0.06 ) TVA OLT 47.1 65 iP :08.90 (-0.15 ) TVA TQTN 92.4 49 iP :15.60 (-0.15 ) TVA MSAL 108.9 263 iP :17.95 (-0.30 ) iS 22:22:31.29 ( 0.00 ) TVA ABTN 116.1 331 iP :19.40 ( 0.04 ) S? :34.90 ( 1.70X) TVA ANTN 135.5 10 iP+ :22.40 ( 0.07 ) iS :39.20 ( 0.86 ) TVA ORT 150.0 46 iPd :24.52 ( 0.01 ) eS :43.91 ( 1.79X) TVA FKT 162.0 304 iP+ :26.23 (-0.12 ) TVA LAL 179.1 251 iP :29.00 ( 0.04 ) iS :50.00 ( 0.19 ) TVA FDKY 203.9 352 iP+ :32.60 ( 0.34 ) TVA TCT 219.5 302 eP :34.50 ( 0.33 ) iS :23:01.55 ( 2.73X) TVA EGT 224.4 62 iP :34.80 (-0.07 ) TVA HAKY 256.7 338 eP :38.95 ( 0.25 ) S? :09.10 ( 2.43X) TVA MOTN 290.4 310 eP :42.70 (-0.12 ) eS :12.80 (-0.99 ) TVA PRM 303.6 108 ePN :44.19 (-0.25 ) TVA SLTN 346.1 61 eP :49.50 (-0.27 ) TVA JSC 395.7 100 eP :56.10 ( 0.42 ) TVA LST 420.4 295 P :23:04.80 ( 6.10X) TVA ELC 423.2 308 P :22:58.55 (-0.50 ) TVA LHS 432.4 96 eP :23:00.93 ( 0.76 ) TVA NAV 496.6 57 eP :07.53 (-0.55 ) TVA SGS 499.9 112 P :12.56 ( 4.15X) TVA BLA 519.9 60 P :19.04 ( 8.10X) TVA FVM 554.4 309 P :16.34 ( 1.23 ) Additional Data: GIT CDG P 22:22:13.6 GIT ATL P :32.0 S 22:22:55.1 ***** 1994 APRIL 5; 23:39 - TRENTON, GEORGIA ***** TVA Aftershock of 940405 22:22Z event. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940405 233926.8 34.930 85.478 9.5 14 48 193 0.2 C B/D 0.7 6 0.3 1.1 A 1.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA OLT 48.1 59 iP 23:39:35.29 ( 0.11 ) iS 23:39:41.25 (-0.05 ) TVA PDTN 51.0 318 iP :35.60 (-0.05 ) iS :42.15 ( 0.03 ) TVA TQTN 94.4 46 eP :42.20 (-0.48 ) eS :53.41 (-0.87X) TVA MSAL 109.7 266 eP :44.50 (-0.52 ) eS :58.05 (-0.27 ) TVA ABTN 120.5 332 eP :46.75 ( 0.06 ) iS :40:01.30 ( 0.09 ) TVA ANTN 139.6 9 eP :49.20 (-0.43 ) S? :05.10 (-1.19X) TVA ORT 152.2 44 eP :51.85 ( 0.31 ) eS :10.20 ( 0.60 ) TVA LAL 178.9 253 eP :55.61 (-0.02 ) eS :17.10 ( 0.42 ) ***** 1994 APRIL 8; 09:03 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.5. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940408 090311.5 33.016 80.141 3.0 3 8 176 0.0 C 1.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC BCS 8.1 119 iPd 09:03:13.50 ( 0.00 ) iSd 09:03:15.35 ( 0.31X) USC TWB 11.6 18 iPd :14.00 ( 0.01 ) iSd :14.75 (-1.16X) USC RGR 13.0 202 iPd :14.15 ( 0.00 ) iSu :15.55 (-0.63X) Additional Data: CSU BCS P 09:03:13.5 CSU RGR P :14 CSU WAS P :16 CSU DRC P :16 ***** 1994 APRIL 14; 17:43 - CHARLESTON, SOUTH CAROLINA ***** CSU Felt (II - 2 reports) between Middleton Place and Summerville, SC. Magnitude 1.96. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940414 174324.9 32.992 80.221 9.5 9 4 89 0.1 A 0.3 360 0.3 0.4 1.3 2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC SVS 3.6 224 iPu 17:43:27.04 ( 0.09 ) iSd 17:43:28.45 (-0.06X) USC RGR 9.7 165 iPu :27.60 ( 0.10 ) iSu :29.30 (-0.17X) USC HBF 11.5 245 iPd :27.75 ( 0.04 ) iSd :29.49 (-0.36X) USC MGS 12.8 144 iPu :27.98 ( 0.00 ) iSu :29.65 (-0.67X) USC BCS 14.6 95 iPd :28.20 (-0.18 ) iSu :30.10 (-0.92X) USC WAS 16.7 196 iPd :28.43 (-0.08 ) iSd :30.53 (-0.72X) USC TWB 17.5 39 iPd :28.75 ( 0.03 ) iSd :31.10 (-0.52X) USC DRC 20.2 309 iPu :29.15 ( 0.03 ) iSu :31.89 (-0.44X) USC SGS 34.9 310 ePu :31.24 (-0.16 ) iSu :35.63 (-0.70X) Additional Data: CSU RGR P 17:43:27.4 CSU TWB P :28 CSU WAS P :28.4 CSU DRC P :29 ***** 1994 APRIL 16; 20:10 - MARYVILLE, TENNESSEE ***** NEIC Felt in the Maryville, Tennessee, area. MG 1.5 (TVA). Standard deviation 0.8 on 6 of 7 observations. TVA This event was felt with MMI=(V) at Maryville, TN. Also other shocks were noted which were felt, but were too small to be located. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I NEIC 940416 201012.0 35.715 83.967 5.0F 6 38 F TVA 940416 201012.2 35.752 83.968 1.8 17 35 171 0.3 C C/C 0.8 -44 0.4 1.4 B 1.5 5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NEIC ORT 37.8 305 eP 20:10:19.10 ( 0.3 ) iS 20:10:22.95 ( X) NEIC CRTN 54.5 12 eP :22.30 ( 0.4 ) eS :28.10 ( X) NEIC TQTN 72.3 252 eP :24.85 (-0.2 ) eS :34.25 ( X) NEIC ANTN 124.5 294 eP :32.60 (-0.9 ) eS :47.38 ( X) NEIC PDTN 177.9 255 eP :41.75 ( 0.8 ) NEIC SLTN 184.6 64 eP :41.75 (-0.3 ) NEIC LAL 338.0 246 eP :11:04.50 ( 2.8X ) eS :11:41.40 ( X) TVA ORT 35.1 300 eP 20:10:19.10 ( 0.65 ) iS 20:10:22.95 (-0.06 ) TVA CRTN 51.0 13 eP :21.31 ( 0.03 ) iS :27.93 ( 0.02 ) TVA TQTN 73.5 249 eP :24.85 (-0.14 ) eS :34.25 (-0.07 ) TVA OLT 116.9 235 eP :31.91 (-0.21 ) S? :45.40 (-1.26 ) TVA BRTN 119.7 56 eS :45.50 (-1.93X) TVA ANTN 123.1 293 eP :32.60 (-0.49 ) eS :47.38 (-0.96 ) TVA PDTN 178.8 253 eP :41.75 ( 0.16 ) TVA SLTN 183.2 65 eP :41.75 (-0.60 ) S? :11:06.60 ( 2.24X) TVA ABTN 194.1 275 eP :44.10 ( 0.16 ) eS :07.80 ( 0.70 ) TVA MSAL 265.8 249 eS :24.95 ( 0.41 ) TVA LAL 340.1 246 eP :11:04.50 ( 1.39 ) eS :41.40 ( 1.13 ) ***** 1994 APRIL 17; 21:02 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude less than 1. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940417 210213.3 32.918 80.094 3.0 4 7 223 0.1 C 0.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC BCS 7.3 21 iPd 21:02:15.10 (-0.03 ) USC RGR 9.5 263 iPu :15.50 ( 0.17 ) iSu 21:02:17.40 ( 0.50X) USC WAS 18.5 245 iPu :16.80 (-0.09 ) USC TWB 21.8 358 iPd :17.90 ( 0.35X) iSd :19.10 (-1.72X) USC DRC 34.6 307 iPd :19.70 (-0.07 ) iSd :21.60 (-3.11X) Additional Data: CSU RGR P 21:02:15.5 CSU WAS P :18 CSU TWB P :19 ***** 1994 APRIL 18; 04:28 - WHITE OAK, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940418 042840.0 34.491 81.249 3.4 11 15 329 0.1 C 1.2 360 1.2 4.9 1.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR07 15.0 208 iPd 04:28:42.47 (-0.01 ) iSd 04:28:44.28 (-0.10 ) USC MR01 18.1 194 iPd :43.91 ( 0.98X) iSu :45.39 ( 0.21 ) USC MR10 18.9 205 iPd :43.22 ( 0.13 ) iSu :45.42 (-0.04 ) USC JSC 23.4 182 iPu :43.80 (-0.03 ) iSu :46.69 (-0.07 ) USC MR05 25.9 198 iPd :44.39 ( 0.20 ) iSu :47.43 ( 0.03 ) USC MR02 33.0 177 iPu :45.46 ( 0.07 ) iSd :49.57 ( 0.07 ) ***** 1994 APRIL 18; 22:21 - KNOXVILLE, TENNESSEE ***** TVA Probable earthquake. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940418 222126.0 35.987 83.828 5.1 14 24 129 0.2 C B/C 0.7 -3 0.3 1.3 A 2.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CRTN 23.7 357 iPc 22:21:30.56 ( 0.27 ) iS 22:21:33.26 (-0.18 ) TVA ORT 43.9 259 iP :33.66 ( 0.00 ) iS :39.21 (-0.06 ) TVA EGT 48.8 101 eP :34.46 (-0.06 ) TVA BRTN 95.6 64 eP :42.21 (-0.02 ) TVA TQTN 96.6 238 eP :42.06 (-0.30 ) eS :53.21 (-1.12X) TVA ANTN 128.1 280 eP :46.61 (-0.72 ) TVA OLT 142.8 230 eP :49.61 ( 0.05 ) eS :22:07.16 ( 0.37 ) TVA SLTN 161.7 71 eP :52.56 ( 0.02 ) TVA FDKY 197.6 297 eP :58.66 ( 0.70 ) eS :21.66 ( 0.35 ) TVA PDTN 199.5 247 eP :58.31 ( 0.07 ) Additional Data: GIT DALG P 22:21:54.2 S 22:22:11.5 ***** 1994 APRIL 20; 05:34 - BLOUNT SPRINGS, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940420 053452.3 33.934 86.811 0.0 17 74 269 0.4 D C/D 0.9 1 0.5 1.4 B 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LAL 73.9 319 iP- 05:35:05.30 ( 0.00 ) iS 05:35:14.80 ( 0.03 ) TVA MSAL 102.1 7 eP :09.85 (-0.10 ) iS :22.50 (-0.32 ) TVA PDTN 172.8 30 eP :21.20 ( 0.24 ) eS :41.77 (-0.10 ) TVA FKT 205.8 356 eP :26.58 ( 0.57 ) eS :51.00 ( 0.40 ) TVA OLT 212.4 50 eP :26.32 (-0.71 ) eS :52.45 ( 0.08 ) TVA ABTN 225.8 16 P? :30.50 ( 1.42X) eS :57.00 ( 1.08 ) TVA TCT 239.6 344 eP :30.40 (-0.76 ) eS :58.85 (-0.67 ) TVA TQTN 259.4 47 eS :36:03.40 (-0.31 ) TVA ANTN 287.1 30 eP- :38.60 ( 1.58X) eS :11.72 ( 2.08X) TVA MOTN 316.4 341 P? :41.20 ( 0.65 ) eS :15.20 (-0.55 ) TVA HAKY 352.5 3 S? :23.70 ( 0.31 ) ***** 1994 APRIL 21; 09:51 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 2.4. NEIC Standard deviation 0.6 on 9 of 9 observations. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940421 095112.8 32.937 80.122 7.0 7 5 154 0.1 C 1.1 360 1.1 1.3 1.5 NEIC 940421 095113.2 32.948 80.154 5.0F 9 6 2.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MGS 4.7 202 iPu 09:51:14.70 ( 0.11 ) iSu 09:51:16.78 ( 0.85X) USC BCS 7.1 48 iPd :15.01 (-0.01 ) iSu :15.47 (-1.21X) USC RGR 7.5 244 iPu :14.89 ( 0.01 ) iSd :15.72 (-0.71X) USC WAS 17.2 234 iPd :16.19 (-0.18 ) iSd :18.46 (-0.60X) USC TWB 19.8 5 iPd :16.88 (-0.01 ) iSd :19.15 (-0.83X) USC HWD 26.7 214 iPu :18.09 ( 0.13 ) iSd :21.48 (-0.37X) USC DRC 31.2 307 iPu :18.80 ( 0.00 ) iSu :23.14 (-0.20X) NEIC RGRS 5.6 218 P 09:51:15.00 ( 0.2 ) NEIC BCS 8.9 67 P :15.00 (-0.2 ) NEIC TWB 18.9 15 P :17.00 ( 0.2 ) NEIC HBF 21.1 266 iPd :16.59 (-0.5 ) eS 09:51:18.54 ( X) NEIC DRC 27.8 309 P :18.50 ( 0.1 ) NEIC SGS 43.4 309 eP :21.04 ( 0.0 ) NEIC JSC 180.1 326 eP :41.52 (-0.9 ) NEIC LHS 180.1 341 eP :42.71 ( 0.2 ) eS :52:03.29 ( X) NEIC PRM 241.3 302 eP :51.32 ( 0.9 ) Additional Data: CSU RGR P 09:51:15 CSU BCS P :15 CSU WAS P :16 CSU TWB P :16.5 CSU DRC P :18.5 ***** 1994 APRIL 23; 09:09 - WILMINGTON, DELAWARE ***** DGS Felt in the Wilmington, Delaware area. Residents from the other side of the Brandywine River called police. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I DGS 940423 0909 39.751 75.547 2.0 F SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) DGS BVD iP 09:09:43.4 iS 09:09:44.2 DGS BWD iP :43.6 iS :43.9 DGS NED iP :45.1 iS :47.2 ***** 1994 APRIL 30; 01:56 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 0.9. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940430 015616.8 32.835 80.187 3.4 5 8 248 0.1 C 0.3 360 0.3 0.6 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC WAS 8.1 280 iPu 01:56:18.90 ( 0.27 ) iSd 01:56:22.42 ( 2.39X) USC RGR 8.1 355 iPu :18.75 ( 0.11 ) iSu :19.50 (-0.54X) USC MGS 8.2 31 iPu :18.52 (-0.18 ) iSu :19.28 (-0.87X) USC SVS 15.9 339 iPu :19.96 (-0.09 ) iSu :20.68 (-1.84X) USC HBF 18.5 312 iPd :20.40 (-0.01 ) iSu :22.56 (-0.59X) Additional Data: CSU MGS P 01:56:18 CSU RGR P :18.5 CSU BCS P :19 CSU WAS P :22 ***** 1994 MAY 1; 03:03 - OOLTEWAH, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940501 030341.2 35.054 84.957 11.2 17 12 187 0.3 C B/D 0.7 -53 0.3 0.7 A 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA OLT 12.3 330 iP 03:03:44.29 ( 0.17 ) TVA TQTN 55.4 22 P? :50.64 (-0.19 ) iS 03:03:57.47 (-0.38 ) TVA LKGA 67.1 225 iPd :52.59 (-0.18 ) eS :04:02.79 ( 1.59X) TVA PDTN 84.9 287 eP :55.89 ( 0.35 ) iS :05.84 (-0.16 ) TVA ORT 111.9 32 eP :04:00.19 ( 0.51 ) eS :13.39 ( 0.23 ) TVA ANTN 126.5 349 eP :02.19 ( 0.25 ) eS :16.64 (-0.43 ) TVA ABTN 139.5 312 iP :04.44 ( 0.54 ) TVA MSAL 158.5 262 eP :06.59 (-0.22 ) eS :25.39 (-0.09 ) TVA CRTN 162.5 38 eP :07.84 ( 0.40 ) eS :27.49 ( 0.91X) TVA EGT 177.5 58 eP :10.59 ( 0.80X) TVA FKT 200.1 294 eS :32.89 (-3.62X) TVA FDKY 206.9 339 eP :15.12 ( 0.89 ) eS :39.79 ( 1.46X) TVA LAL 228.4 253 eP :17.49 ( 0.12 ) eS :44.74 ( 0.98 ) ***** 1994 MAY 1; 16:08 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.5. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940501 160843.1 33.042 80.171 3.0 4 12 195 0.1 C 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC BCS 12.1 125 iPu 16:08:45.85 ( 0.07 ) USC RGR 15.1 188 iPd :46.15 ( 0.04 ) S 16:08:46.35 (-2.07X) USC DRC 21.5 290 iPd :47.30 ( 0.00 ) USC WAS 23.6 203 iPd :47.40 (-0.19 ) Additional Data: CSU RGR P 16:08:46 CSU BCS P :46 CSU WAS P :47 CSU DRC P :47 ***** 1994 MAY 4; 09:12 - MOULTON, ALABAMA ***** NEIC Felt (IV) at Addison and Sardis; (III) at Decatur, Houston and Madison; (II) at Arley. Also felt at Double Springs and Jones Chapel. Standard deviation 0.9 on 13 of 14 observations. TVA Felt (IV) at Addison, (III) at Decatur, Houston and Madison; (II) at Arley. Also felt at Double Springs and Jones Chapel. (USGS) SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I NEIC 940504 091202.8 34.198 87.174 5.0F 13 30 3.0 4 TVA 940504 091203.4 34.222 87.195 19.3 9 27 241 0.2 C B/D 0.9 -33 0.7 2.5 B 3.3 4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NEIC LAL 30.0 330 iP 09:12:09.00 ( 0.7 ) NEIC MSAL 85.6 32 eP :17.04 (-1.1 ) iS 09:12:27.00 ( X) NEIC LKGA 163.5 73 iPd :29.79 (-0.2 ) iS :49.70 ( X) NEIC PDTN 170.1 45 iP :30.35 (-0.4 ) eS :51.79 ( X) NEIC TCT 203.5 350 iP :35.45 ( 0.4 ) NEIC ABTN 211.3 27 eP :37.00 ( 0.9 ) NEIC MOTN 278.0 345 iP :46.00 ( 1.2 ) iS :13:18.00 ( X) NEIC HAKY 326.9 9 eP :54.00 ( 3.0X ) iS :34.00 ( X) NEIC GOGA 353.6 103 ePn :54.92 ( 0.5 ) eS :36.72 ( X) NEIC CRTN 375.9 53 eP :58.00 ( 0.7 ) eS :39.00 ( X) NEIC ELC 389.2 332 (Pn) :57.51 (-1.5 ) Sg :49.77 ( X) ePg :13:05.07 ( ) NEIC PRM 443.7 90 (Pn) :05.47 (-0.5 ) Sg :14:02.71 ( X) NEIC FVM 511.5 326 ePn :13.67 (-1.0 ) NEIC MIAR 590.5 276 ePn :24.78 ( 0.2 ) TVA LAL 27.2 331 iP 09:12:09.00 ( 0.06 ) TVA MSAL 84.3 34 eP :17.08 (-0.34 ) iS 09:12:27.48 (-0.18 ) TVA LKGA 164.5 74 iPd :29.79 ( 0.07 ) iS :48.83 (-0.12 ) TVA PDTN 169.7 46 iP :30.38 (-0.10 ) eS :50.53 ( 0.26 ) TVA FKT 174.6 7 eP :31.33 ( 0.10 ) TVA TCT 200.6 351 iP- :35.45 ( 0.25X) TVA ABTN 209.5 28 eP :37.00 ( 0.59X) iS :13:01.73 ( 1.22X) TVA OLT 224.0 62 iPd :38.78 ( 0.59X) TVA TQTN 267.6 57 iP :45.13 ( 1.64X) TVA MOTN 275.4 345 iP :46.41 ( 1.97X) iS :18.00 ( 3.59X) TVA ANTN 280.7 39 eP :46.53 ( 1.39X) TVA FDKY 312.0 24 eP :52.33 ( 3.40X) TVA ORT 323.4 54 eP :52.12 ( 1.79X) eS :27.73 ( 3.14X) TVA HAKY 324.7 10 eP :53.53 ( 3.06X) iS :27.83 ( 2.99X) TVA CRTN 376.1 53 eP :58.00 ( 1.21X) eS :39.00 ( 3.23X) TVA ELC 386.4 332 P :57.51 (-0.49X) TVA PRM 445.9 91 P :13:05.47 ( 0.18 ) TVA BRTN 459.4 58 eP :10.33 ( 3.34X) TVA FVM 508.8 326 eP :13.67 ( 0.68X) TVA SLTN 523.0 60 eP :16.03 ( 1.18X) Additional Data: GIT CDG P 09:12:40.6 S 09:13:08.0 GIT ATL P :46.7 S :18.5 ***** 1994 MAY 4; 21:10 - CHARLESTON, SOUTH CAROLINA ***** CSU Felt (II) at Hollywood/Adams Run, SC. Magnitude 2.3. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940504 211015.3 32.755 80.285 2.0 4 2 192 0.0 C 2.0 2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC HWD 1.8 175 iPd 21:10:16.06 ( 0.00 ) USC WAS 10.3 7 iPu :17.53 ( 0.01 ) USC RGR 18.9 27 iPd :19.05 (-0.02 ) USC MGS 20.8 40 iPd :19.48 ( 0.03 ) Additional Data: CSU WAS P 21:10:17.3 CSU RGR P :18.5 CSU MGS P :19 CSU BCS P :21 CSU DRC P :22 ***** 1994 May 7; 21:10 - CHARLESTON, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940507 211018.1 32.965 80.310 2.0 3 3 143 0.0 C 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC HBF 2.9 229 iPu 21:10:18.98 ( 0.00 ) USC SVS 5.8 86 iPd :19.56 (-0.01 ) USC SGS 31.4 324 iPu :24.05 ( 0.01 ) ***** 1994 MAY 17; 11:13 - ATHENS, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940517 111349.6 35.328 84.537 9.9 13 27 195 0.3 C B/D 1.2 -48 0.3 1.2 A 1.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 27.0 321 iP 11:13:54.95 ( 0.44 ) TVA OLT 48.6 246 eP :58.03 ( 0.00 ) S? 11:14:04.08 (-0.14 ) TVA ORT 67.8 18 eP :14:01.31 ( 0.12 ) eS :09.28 (-0.40 ) TVA CRTN 115.4 33 P? :08.41 (-0.23 ) S? :23.13 ( 0.56 ) TVA LKGA 115.8 228 eP :08.73 ( 0.00 ) eS :23.03 ( 0.31 ) TVA PDTN 119.6 267 eS :23.20 (-0.46 ) TVA ABTN 155.3 294 eP :15.50 ( 0.75 ) eS :33.80 ( 0.66 ) TVA FDKY 197.8 325 P? :21.75 ( 0.49 ) S? :45.83 ( 1.44X) ***** 1994 MAY 26; 01:57 - STEVENSON, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940526 015727.8 34.958 86.143 8.8 16 44 122 0.2 C B/C 0.6 -24 0.4 1.2 A 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA PDTN 44.1 37 iP 01:57:35.52 ( 0.06 ) eS 01:57:41.01 (-0.07 ) TVA MSAL 50.0 256 eP :36.51 ( 0.08 ) eS :42.63 (-0.13 ) TVA LKGA 71.7 121 P? :40.31 ( 0.28 ) eS :48.96 (-0.03 ) TVA ABTN 103.0 2 eP :45.24 ( 0.24 ) eS :57.46 (-0.13 ) TVA OLT 104.3 78 eP :44.96 (-0.25 ) eS :57.91 (-0.05 ) TVA FKT 118.6 321 P? :46.96 (-0.43 ) S? :58:02.31 ( 0.59 ) TVA LAL 123.7 242 P? :47.67 (-0.51 ) eS :03.21 ( 0.13 ) TVA ANTN 158.0 31 P? :53.80 ( 0.35 ) S? :12.36 ( 0.15 ) ***** 1994 MAY 26; 04:06 - BENTON, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940526 040604.5 35.176 84.500 13.1 22 43 180 0.2 C B/C 0.6 -35 0.2 0.7 A 2.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 43.0 331 iP 04:06:12.10 (-0.06 ) TVA OLT 47.9 267 iP :13.12 ( 0.15 ) TVA ORT 83.3 12 iP :18.39 (-0.09 ) iS 04:06:27.80 (-0.87X) TVA LKGA 108.0 236 iP :22.41 ( 0.11 ) iS :34.80 (-0.48 ) TVA PDTN 123.4 275 eP :24.91 ( 0.28 ) iS :39.00 (-0.30 ) TVA CRTN 128.3 28 iP :25.21 (-0.18 ) iS :40.85 ( 0.23 ) TVA ANTN 128.8 329 iP :25.16 (-0.32 ) TVA EGT 135.4 53 P? :26.41 (-0.13 ) TVA ABTN 165.8 299 iP :31.21 ( 0.08 ) iS :50.90 ( 0.35 ) TVA BRTN 197.3 48 eP :36.00 ( 0.03 ) eS :59.70 ( 0.77 ) TVA MSAL 201.8 260 eP :36.31 (-0.32 ) eS :07:00.31 ( 0.25 ) TVA FDKY 213.8 327 iP :38.69 ( 0.22 ) eS :08.70 ( 5.46X) TVA SLTN 256.9 56 eP :43.81 (-0.25 ) eS :15.40 ( 2.47X) TVA LAL 272.3 253 iP :46.96 ( 1.14 ) eS :18.35 ( 2.38X) TVA HAKY 284.7 319 eP :47.91 ( 0.59 ) S? :18.31 (-0.26 ) ***** 1994 MAY 28; 10:54 - LENOIR CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940528 105422.4 35.741 84.310 14.6 19 19 142 0.2 C B/C 0.6 -38 0.3 0.7 A 2.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 18.7 1 iP 10:54:26.49 ( 0.00 ) TVA TQTN 45.2 237 iP :30.10 (-0.33 ) iS 10:54:36.43 ( 0.15 ) TVA CRTN 66.3 40 eP :33.96 ( 0.28 ) iS :41.86 (-0.04 ) TVA OLT 92.2 225 iP :37.69 ( 0.04 ) eS :48.64 (-0.13 ) TVA EGT 93.2 79 eP :38.10 ( 0.24 ) S? :48.74 (-0.39 ) TVA ANTN 95.9 300 eP :37.73 (-0.50 ) TVA BRTN 146.8 62 S? :55:07.60 ( 4.32X) TVA PDTN 149.0 250 eP :46.74 ( 0.41 ) S? :03.75 (-0.04 ) TVA LKGA 163.0 221 eP :48.70 ( 0.19 ) eS :07.84 ( 0.28 ) TVA ABTN 163.4 276 P? :49.29 ( 0.75 ) eS :07.24 (-0.38 ) TVA FDKY 177.0 312 eP :50.69 ( 0.06 ) eS :11.79 ( 0.56 ) TVA SLTN 212.0 68 eP :56.65 ( 0.57 ) eS :23.10 ( 2.45X) TVA TCT 294.3 277 :55:00.00 (-6.22X) S? :40.70 ( 2.51X) ***** 1994 JUNE 9; 08:01 - JEFFERSON CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940609 080148.5 36.100 83.690 15.2 10 18 119 0.2 B B/B 0.9 -19 0.3 1.7 B 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CRTN 17.5 309 iP 08:01:52.69 ( 0.25 ) iS 08:01:55.20 (-0.14 ) TVA EGT 41.7 122 iP+ :56.00 ( 0.00 ) TVA ORT 59.3 249 iP :58.60 (-0.03 ) iS :02:07.00 ( 0.94X) TVA BRTN 79.2 69 eP :02:01.40 (-0.30 ) iS :11.45 ( 0.08 ) TVA TQTN 113.9 236 iP :06.95 (-0.04 ) eS :20.72 ( 0.21 ) TVA ANTN 139.0 274 iP :10.30 (-0.56X) iS :26.90 (-0.32X) TVA SLTN 146.1 74 iS :29.80 ( 0.59X) TVA OLT 160.4 229 iP :14.00 (-0.12 ) eS :33.00 ( 0.14 ) TVA FDKY 203.6 293 eP :20.50 (-0.23X) eS :44.50 ( 0.21X) TVA PDTN 215.9 245 iP :22.45 (-0.18X) iS :49.05 ( 1.47X) TVA ABTN 219.4 264 iP :22.68 (-0.38X) eS :49.15 ( 0.82X) TVA LKGA 230.4 225 eP :24.95 ( 0.51X) eS :51.55 ( 0.84X) TVA HAKY 282.0 294 eS :03:01.30 (-0.23X) TVA LAL 379.7 242 eP :42.60 (-0.05X) ***** 1994 JUNE 17; 03:17 - TELLICO PLAINS, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940617 031727.1 35.303 84.206 13.6 17 53 182 0.3 C B/D 0.8 -47 0.3 0.9 A 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 52.8 297 iP 03:17:36.30 (-0.06 ) eS 03:17:43.10 (-0.01 ) TVA ORT 67.9 352 eP :38.70 ( 0.01 ) eS :46.60 (-0.54 ) TVA OLT 76.4 257 iP :40.20 ( 0.21 ) iS :48.88 (-0.52 ) TVA CRTN 104.9 18 eP :44.25 (-0.11 ) eS :56.75 (-0.20 ) TVA ANTN 133.8 316 eP :49.05 ( 0.25 ) eS :18:05.20 ( 0.57 ) TVA LKGA 138.1 237 eP- :49.50 ( 0.05 ) eS :04.90 (-0.86 ) TVA FDKY 218.4 320 eP :18:02.00 ( 0.27 ) eS :28.60 ( 1.59X) TVA SLTN 226.9 55 eP :03.15 ( 0.23 ) eS :28.35 (-0.71 ) TVA MSAL 230.7 258 eP :02.92 (-0.34 ) eS :30.68 ( 1.04 ) ***** 1994 JUNE 19; 07:20 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.4. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940619 072033.8 32.933 80.162 5.0 5 4 124 0.0 C 0.3 360 0.3 0.7 1.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC RGR 4.1 227 iPd 07:20:35.20 ( 0.01 ) USC MGS 4.4 153 iPd :35.25 (-0.01 ) USC SVS 9.0 296 iPu :35.94 (-0.01 ) USC BCS 10.4 60 ePd :36.33 ( 0.03 ) USC HBF 16.1 276 iPu :37.03 ( 0.00 ) Additional Data: CSU RGR P 07:20:35.5 CSU BCS P :37 CSU WAS P :37 CSU TWB P :38(?) ***** 1994 JUNE 19; 08:36 - ALLINGDALE, WEST VIRGINIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I VTSO 940619 083641.3 38.339 80.640 5.0F 11 85 278 0.6 D D/D 4.0 -41 1.8 7.0 D 1.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) VTSO HWV 85.0 192 08:37:05.50 (-0.39 ) VTSO VWV 99.4 167 08:36:58.40 ( 0.20 ) :11.00 ( 0.99 ) VTSO NAV 114.4 187 :37:00.80 ( 0.24 ) :13.60 (-0.45 ) VTSO BLA 126.7 171 :02.60 ( 0.15 ) :16.60 (-0.65 ) VTSO CVL 195.1 101 :34.50 (-0.50 ) VTSO GHV 230.4 104 :18.20 (-0.07 ) :43.00 (-1.17 ) VTSO NA12 245.2 98 :49.00 ( 0.98 ) ***** 1994 JUNE 19; 13:19 - MADISONVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940619 131906.9 35.589 84.135 18.9 13 39 167 0.2 C B/C 1.1 -46 0.3 2.1 B 2.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 38.7 337 iP 13:19:14.17 ( 0.08 ) iS 13:19:19.37 ( 0.06 ) TVA TQTN 54.2 262 eP :16.77 ( 0.38 ) eS :23.02 (-0.26 ) TVA CRTN 72.8 21 iP- :19.27 ( 0.02 ) eS :27.92 (-0.30 ) TVA OLT 94.3 239 eP :22.73 ( 0.20 ) eS :33.42 (-0.48 ) TVA ANTN 118.2 303 iP :26.12 (-0.07 ) eS :40.42 ( 0.18 ) TVA LKGA 162.3 229 eP :32.87 (-0.07 ) eS :50.99 (-0.92X) TVA FDKY 200.1 312 eP :38.96 ( 0.27 ) eS :20:03.67 ( 1.81X) TVA SLTN 204.9 62 iP :39.67 ( 0.11 ) eS :05.07 ( 1.70X) ***** 1994 JUNE 20; 05:52 - CHARLESTON, SOUTH CAROLINA ***** CSU Felt (III-3 reports) at Ladson, SC. Magnitude 2.1. Ladson resident was awake on first floor on a brick home. Heard explosion sound only. Behavior of dogs was excited, barking prior to the resident hearing explosion. Another report was from a person working in an Emergency Center in Summerville. Thought furnace had exploded. No damage reported. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940620 055238.5 33.040 80.162 2.1 5 11 179 0.0 C 0.5 360 0.5 2.3 1.1 3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC BCS 11.3 126 iPd 05:52:41.08 ( 0.01 ) USC SVS 11.3 225 iPd :40.97 ( 0.01 ) S 05:52:42.17 (-0.69X) USC RGR 15.0 191 iPd :41.56 ( 0.01 ) USC HBF 19.0 237 iPd :42.20 (-0.03 ) S :44.23 (-0.88X) USC COW 62.8 307 iPd :49.90 ( 0.02 ) Additional Data: CSU BCS P 05:52:41 CSU TWB P :41 CSU RGR P :41.5 CSU WAS P :43 ***** 1994 JUNE 26; 05:50 - EUTAW, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940626 055037.2 33.025 88.185 8.7 8 175 316 0.3 D C/D 2.2 -71 1.0 1.6 B 2.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LAL 175.2 26 iP 05:51:05.25 (-0.29 ) iS 05:51:26.40 ( 0.19 ) TVA MSAL 245.7 34 eP :15.80 ( 0.04 ) eS :43.05 (-0.84 ) TVA LKGA 307.5 54 eP :23.70 ( 0.34 ) eS :57.72 ( 0.69 ) TVA TCT 335.7 10 eP :27.40 ( 0.64 ) eS :52:02.80 (-0.12 ) TVA FDKY 471.4 27 P? :48.55 ( 5.19X) TVA HAKY 475.7 17 P? :47.85 ( 3.98X) ***** 1994 JULY 4; 07:09 - GUNTERSVILLE, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940704 070931.5 34.556 86.292 15.2 7 48 178 0.2 C C/C 2.4 -1 0.5 99.0 D 0.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA MSAL 47.6 313 eP 07:09:39.98 ( 0.08 ) eS 07:09:45.96 (-0.05 ) TVA LKGA 75.6 84 eP :44.83 ( 0.61 ) eS :53.34 (-0.16 ) TVA LAL 96.9 262 eP :47.86 ( 0.41 ) eS :58.93 (-0.14 ) TVA OLT 133.4 60 P? :55.23 ( 2.18X) S? :10:09.78 ( 1.01X) TVA ANTN 203.6 28 P? :10:03.75 (-0.08 ) S? :29.65 ( 2.24X) ***** 1994 AUGUST 5; 18:03 - LENOIR CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940805 180313.3 35.673 84.318 10.7 10 41 278 0.2 C B/D 1.1 -79 0.5 0.9 A 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 40.9 245 eP 18:03:20.61 ( 0.07 ) eS 18:03:25.76 (-0.04 ) TVA OLT 86.5 228 eP :27.61 (-0.34 ) S? :38.81 ( 0.20 ) TVA ANTN 99.3 304 iP :29.96 ( 0.04 ) S? :41.81 (-0.22 ) TVA LKGA 156.9 222 eP :38.61 (-0.14 ) S? :57.31 ( 0.01 ) TVA ABTN 163.7 279 eP :40.81 ( 1.05 ) eS :04:00.11 ( 1.07 ) ***** 1994 AUGUST 6; 19:54 - NEW BERN, NORTH CAROLINA ***** NEIC Felt (V) at Havelock, Merritt and New Bern; (IV) at Aurora, Bayboro, Beaufort, Chocowinity, Grantsboro, Hubert, Maysville, Newport, Stonewall, Vanceboro, Vandemere and Washington; (III) at Arapahoe. Standard deviation 0.8 on 7 of 11 observations. UNC An intensity survey was conducted in the epicentral region. Approximately 1200 responses were received. The highest intensity value reported was MMI V. Intensity V was reported from New Bern, Aurora, and Washington. The furthest felt report came from the small town of Zebulon, located 185 km from New Bern. VTSO This event is the subject of the abstract in Appendix A. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I NEIC 940806 195409.9 35.067 76.751 5.0F 7 224 3.6 3.8 5 VTSO 940806 195411.8 35.101 76.786 0.0F 18 215 252 0.9 D D/D 10.1 -68 2.4 10.0 D 3.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NEIC PBV 223.5 342 Pn 19:54:44.29 (-0.6 ) NEIC CEH 231.3 294 eP :45.72 (-0.1 ) NEIC GHV 325.8 339 Pn :57.38 (-0.6 ) NEIC NA12 339.2 343 Pn :55:05.55 ( 5.9X ) NEIC CVL 358.1 335 Pn :03.42 ( 1.4 ) NEIC LHS 377.0 261 Pn :04.59 ( 0.0 ) NEIC SGS 404.8 240 Pn :08.17 ( 0.2 ) NEIC JSC 422.6 259 Pn :10.10 (-0.2 ) NEIC MCWV 578.2 333 (Pn) :32.81 ( 2.6X ) NEIC PNJ 687.2 19 Pn :40.42 (-3.6X ) NEIC YSNY 837.3 350 (Pn) :56:00.74 (-2.3X ) VTSO BTR 215.2 304 P 19:54:44.30 (-0.98 ) 19:55:10.50 ( 0.85 ) VTSO PBV 219.3 342 P :46.48 ( 0.70 ) Lg :11.81 ( 1.30 ) VTSO CEH 226.9 293 P :46.00 (-0.72 ) :56:05.20 (-6.94X) VTSO GRB 288.9 293 P :53.50 (-0.80 ) :30.20 ( 4.95X) VTSO GHV 321.5 339 P :57.38 (-0.90 ) Lg :29.07 (-3.06X) VTSO NA12 334.5 343 P :55:00.56 ( 0.69 ) :33.39 (-1.50 ) VTSO CVL 353.1 335 P :03.42 ( 1.28 ) Sn :46.28 ( 7.45X) VTSO LHS 374.4 260 P :04.59 (-0.15 ) Sn :41.59 (-1.73 ) VTSO SGS 403.3 239 P :08.17 (-0.10 ) Lg :50.57 ( 1.15 ) VTSO HBF 405.3 235 P :08.15 (-0.36 ) Lg :50.49 ( 0.65 ) VTSO JSC 419.9 259 P :10.10 (-0.21 ) Lg :54.29 ( 1.35 ) Additional Data: GIT ATL P 19:56:10.7 Sn 19:57:17.5 Sg :47.1 ***** 1994 AUGUST 29; 07:10 - SIGNAL MOUNTAIN, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940829 071017.3 35.062 85.450 13.9 8 49 173 0.1 C C/C 5.4 -49 1.1 10.4 D 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 48.7 182 iPc 07:10:25.92 ( 0.05 ) iS 07:10:32.12 (-0.04 ) TVA MSAL 114.3 258 eP :35.67 (-0.23 ) eS :49.52 ( 0.01 ) TVA ANTN 124.7 9 eP :37.77 ( 0.25 ) eS :52.22 (-0.10 ) TVA LAL 186.2 249 eP :46.77 (-0.14 ) eS :11:10.02 ( 1.45X) TVA TCT 217.6 299 P :11:00.00 ( 8.29X) eS :17.67 ( 0.81 ) ***** 1994 AUGUST 29; 10:50 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940829 105052.3 35.684 84.142 9.9 8 56 225 0.2 D C/D 2.7 -39 0.5 3.3 C 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 56.1 251 eP 10:51:02.70 ( 0.75 ) eS 10:51:08.92 (-0.11 ) TVA CRTN 63.4 25 eP :03.12 (-0.04 ) eS :11.22 ( 0.10 ) TVA ANTN 112.2 299 eP :10.72 (-0.15 ) eS :24.47 ( 0.02 ) TVA ABTN 179.2 278 eP :21.72 ( 0.61 ) eS :42.62 ( 0.45 ) ***** 1994 SEPTEMBER 10; 11:30 - GLENMORE, VIRGINIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I VTSO 940910 113010.4 37.645 78.517 1.3F 8 38 238 0.3 D C/D 2.8 50 1.4 98.6 D 1.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) VTSO CVL 37.7 8 eP 11:30:16.92 ( 0.31 ) eS? 11:30:20.61 (-0.52 ) VTSO GHV 39.8 65 iPd :16.91 (-0.04 ) eS :21.63 (-0.09 ) VTSO NA12 67.6 56 eP :21.37 (-0.14 ) eS? :30.11 ( 0.50 ) VTSO PBV 114.2 130 P :28.95 (-0.21 ) eS :43.02 ( 0.17 ) ***** 1994 SEPTEMBER 13; 11:03 - SPENCER, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940913 110359.8 34.708 85.474 5.1 21 9 122 0.2 B B/B 0.7 -28 0.3 0.9 A 2.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 9.3 179 iP 11:04:01.85 ( 0.10 ) TVA OLT 64.0 40 iP :10.70 (-0.12 ) TVA MSAL 110.9 278 iPc :18.25 (-0.25 ) eS 11:04:31.95 (-0.19 ) TVA TQTN 112.7 37 iP :18.74 (-0.03 ) eS :32.00 (-0.61 ) TVA ABTN 142.9 336 iP :23.40 (-0.01 ) iS :41.35 ( 0.71 ) TVA ANTN 163.9 8 iP :26.73 ( 0.08 ) TVA ORT 170.5 38 eP :27.75 ( 0.11 ) eS :48.65 ( 0.69 ) TVA LAL 173.6 261 eP :28.30 ( 0.19 ) iS :49.05 ( 0.29 ) TVA FDKY 232.9 353 eP :37.05 (-0.13 ) S? :05:05.55 ( 1.09 ) TVA TCT 237.6 308 iP :37.70 (-0.04 ) iS :07.40 ( 1.97X) TVA EGT 238.1 56 eP :37.65 (-0.27 ) eS :05.90 ( 0.16 ) TVA HAKY 284.4 340 eP :45.85 ( 2.39X) eS :18.70 ( 3.38X) TVA BRTN 298.9 52 P? :46.20 ( 0.91 ) eS :21.80 ( 3.31X) TVA MOTN 311.0 314 P? :46.70 (-0.01 ) S? :22.60 ( 1.66X) TVA SLTN 359.8 57 P? :52.20 (-0.62 ) Additional Data: GIT CDG P 11:04:11.6 S 11:04:19.9 GIT ATL P :28.2 S :47.1 ***** 1994 SEPTEMBER 19; 02:34 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 0.4. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940919 023437.8 32.915 80.197 3.0 3 1 134 0.0 C 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC RGR 0.9 162 iPu 02:34:38.60 ( 0.00 ) iSu 02:34:39.42 ( 0.23X) USC WAS 10.3 222 iPd :41.30 ( 1.27X) iSu :42.20 ( 0.49X) USC HBF 13.2 286 iPu :40.50 ( 0.00 ) iSu :41.30 (-1.23X) USC BCS 14.3 60 iPu :40.91 ( 0.00 ) iSd :41.71 (-1.54X) Additional Data: CSU RGR P 02:34:38.5 CSU BCS P :41 CSU WAS P :41.5 ***** 1994 SEPTEMBER 20; 02:28 - CLEVELAND, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940920 022822.8 35.163 84.772 14.6 22 23 169 0.2 C B/C 0.5 -49 0.3 0.6 A 2.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA OLT 23.0 266 iP 02:28:27.45 (-0.02 ) TVA TQTN 39.4 6 iP :30.20 ( 0.26 ) iS 02:28:34.80 (-0.35 ) TVA LKGA 87.6 227 iP :37.31 (-0.05 ) iS :48.00 ( 0.01 ) TVA ORT 93.0 27 eP :38.40 ( 0.24 ) iS :48.90 (-0.47 ) TVA PDTN 98.9 277 eP :39.15 ( 0.10 ) iS :51.00 ( 0.08 ) TVA ANTN 119.4 340 iP :42.20 (-0.02 ) TVA ABTN 145.4 304 eP :46.10 (-0.08 ) iS :29:03.10 (-0.14 ) TVA EGT 156.7 58 eP :47.50 (-0.48 ) iS :08.60 ( 2.23X) TVA MSAL 177.1 259 eP- :50.61 (-0.42 ) eS :11.58 (-0.05 ) TVA FDKY 202.7 333 iP :55.30 ( 0.35 ) TVA BRTN 217.2 52 eP :57.40 ( 0.20 ) eS :22.10 (-0.22 ) TVA LAL 248.2 252 eP+ :29:01.50 ( 0.52 ) eS :28.70 (-0.16 ) TVA TCT 268.8 291 P? :03.40 (-0.10 ) eS :35.40 ( 2.20X) TVA HAKY 270.4 323 eP :06.60 ( 2.92X) eS :36.40 ( 2.88X) TVA SLTN 278.6 59 eP :05.05 ( 0.23 ) TVA MOTN 332.1 300 S? :51.00 ( 4.42X) ***** 1994 SEPTEMBER 20; 08:47 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 0.3. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940920 084706.4 32.885 80.207 8.5 4 3 224 0.0 C 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC RGR 2.8 25 iPu 08:47:08.20 ( 0.06 ) iSd 08:47:09.10 (-0.39X) USC MGS 6.3 77 iPu :08.45 (-0.04 ) iSu :09.21 (-0.90X) USC WAS 7.4 235 iPu :10.85 ( 2.28X) iSd :11.80 ( 1.55X) USC HBF 13.7 300 iPd :09.40 (-0.01 ) iSd :10.60 (-1.12X) USC BCS 16.9 51 iPu :10.15 ( 0.03 ) iSd :11.35 (-1.62X) Additional Data: CSU RGR P 08:47:08 CSU MGS P :09 CSU WAS P :11 ***** 1994 SEPTEMBER 25; 05:54 - COLUMBIA, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940925 055454.2 35.610 86.736 14.8 10 64 121 0.3 D C/D 0.8 19 0.5 33.3 D 1.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ABTN 64.4 62 P? 05:55:05.20 (-0.01 ) eS 05:55:12.95 (-0.27 ) TVA MSAL 84.9 176 eP :08.20 (-0.14 ) eS :18.00 (-0.63 ) TVA TCT 85.8 301 P? :08.50 ( 0.01 ) iS :18.90 ( 0.02 ) TVA PDTN 88.8 115 iP :09.40 ( 0.46 ) S? :19.85 ( 0.18 ) TVA LAL 141.3 203 S? :33.90 ( 0.32 ) TVA ANTN 149.5 65 S? :37.20 ( 1.41 ) TVA MOTN 158.7 315 P? :27.45 ( 7.82X) S? :41.20 ( 3.03X) TVA HAKY 166.5 5 eS :43.00 ( 2.76X) ***** 1994 OCTOBER 5; 23:25 - SCOTTSBORO, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 941005 232517.5 34.929 85.774 10.6 6 39 203 0.1 D D/D 5.9 66 0.4 2.2 D 1.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA PDTN 38.8 350 eP 23:25:24.40 ( 0.02 ) eS 23:25:29.40 ( 0.00 ) TVA LKGA 43.7 141 eP :25.20 (-0.02 ) eS :30.85 ( 0.00 ) TVA ABTN 110.4 344 eP :35.65 (-0.12 ) eS :49.30 ( 0.20 ) ***** 1994 OCTOBER 17; 00:32 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.7. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941017 003247.5 32.929 80.169 5.0 7 3 83 0.1 A 0.5 360 0.5 1.2 1.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC RGR 3.4 224 iPu 00:32:48.69 (-0.06 ) iSu 00:32:49.31 (-0.42X) USC MGS 4.4 143 iPu :48.97 ( 0.06 ) iSu :49.42 (-0.60X) USC SVS 8.6 300 iPu :49.56 ( 0.02 ) iSu :50.63 (-0.49X) USC BCS 11.2 60 iPd :49.92 (-0.16 ) iSu :51.38 (-0.70X) USC WAS 13.3 226 iPd :50.22 (-0.01 ) iSu :51.91 (-0.43X) USC HBF 15.4 278 iPu :50.58 ( 0.01 ) iSu :52.38 (-0.56X) USC TWB 21.5 17 iPd :51.71 (-0.01 ) iSu :54.00 (-0.96X) USC DRC 28.5 314 iPu :54.45 ( 1.54X) iSd :55.18 (-1.88X) Additional Data: CSU RGR P 00:32:48.5 CSU MGS P :48.5 CSU WAS P :50 CSU TWB P :52 ***** 1994 OCTOBER 28; 02:04 - ANNE ARUNDEL, MARYLAND ***** DGS/MGS Felt in Glen Burnie, Pasadena, Millersville and Gambrills, Maryland. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I DGS 9 41028 0204 39.3 76.6 2.7 F SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) DGS NED iP 02:04:52.9 iS 02:05:05.4 DGS BWD iP :55.7 iS :10.6 DGS BVD eP :57.0 iS :11.6 ***** 1994 NOVEMBER 1; 08:19 - CHARLESTON, SOUTH CAROLINA ***** CSU Between Middleton Place and Summerville, SC. No felt reports. Magnitude 1.1?. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941101 081916.6 32.899 80.162 3.0 3 2 194 0.0 C 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MGS 2.0 94 iPd 08:19:17.50 ( 0.00 ) S 08:19:18.60 ( 0.40X) USC RGR 3.1 287 iPu :17.60 ( 0.00 ) S :18.40 ( 0.03X) USC WAS 11.8 241 iPu :20.00 ( 0.96X) S :21.80 ( 0.88X) USC BCS 12.7 45 iPd :19.40 ( 0.00 ) Additional Data: CSU RGR P 08:19:17.5 CSU MGS P :17.5 ***** 1994 NOVEMBER 4; 23:50 - DALTON, GEORGIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 941104 235008.6 34.903 84.931 15.2 8 58 223 0.2 D C/D 1.8 -52 0.4 99.0 D 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 58.4 238 eP 23:50:18.40 (-0.21 ) eS 23:50:26.00 ( 0.03 ) TVA TQTN 70.6 15 eP :20.70 ( 0.27 ) iS :29.05 (-0.06 ) TVA PDTN 93.3 296 eP :24.20 ( 0.28 ) eS :34.60 (-0.55 ) TVA ABTN 152.8 316 eP :33.30 ( 0.25 ) eS :51.05 ( 0.11 ) ***** 1994 NOVEMBER 22; 11:01 - CALHOUN, GEORGIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 941122 110140.1 34.443 84.700 8.5 9 74 305 0.3 D C/D 2.0 -59 1.1 2.2 B 2.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 73.7 286 eP 11:01:52.30 (-0.37 ) eS 11:02:02.00 ( 0.14 ) TVA OLT 83.8 339 eP :54.70 ( 0.35 ) eS :04.75 (-0.01 ) TVA PDTN 139.8 312 eP :02:03.00 ( 0.02 ) eS :19.65 (-0.05 ) TVA MSAL 186.4 284 eP :11.30 ( 1.19X) eS :32.40 ( 0.36 ) TVA ABTN 205.2 322 eP :12.80 (-0.20 ) eS :36.10 (-0.92 ) Additional Data: GIT DALG P 11:01:47.0 S 11:01:53.1 SOUTHEASTERN U. S. RESERVOIR RELATED EARTHQUAKES DURING 1994 Events are listed chronologically (this also applies to multiple hypocenter locations for the same event). All times are Universal Coordinated Time. Most entries in the listing are self-explanatory. Items that might require further explanation defined in the section entitled DEFINITIONS AND NETWORK OPERATOR CODES. ***** 1994 JANUARY 10; 17:46 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940110 174600.4 34.323 81.346 0.8 10 2 210 0.0 C 0.2 360 0.2 0.2 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR10 1.7 28 iPd 17:46:00.77 ( 0.00 ) iSu 17:46:01.03 ( 0.00 ) USC MR07 5.6 20 iPu :01.37 (-0.03 ) iSu :02.17 ( 0.04 ) USC MR05 6.2 170 iPd :01.50 ( 0.00 ) iSd :02.33 ( 0.02 ) USC JSC 9.2 121 iPd :02.00 (-0.01 ) iSd :03.23 ( 0.01 ) USC MR02 17.9 143 iPu :03.44 ( 0.02 ) iSd :05.64 (-0.06 ) ***** 1994 JANUARY 31; 20:30 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940131 203001.8 34.752 83.050 7.2 10 13 287 0.0 C 0.5 360 0.5 0.9 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MMC 12.7 76 ePu 20:30:04.17 (-0.02 ) iSu 20:30:06.07 ( 0.01 ) USC JVW 27.1 10 ePu :06.43 ( 0.05 ) iSd :10.01 ( 0.05 ) USC BG3 28.9 22 ePu :06.66 ( 0.00 ) iSu :10.43 (-0.02 ) USC BC 29.5 3 ePu :06.74 (-0.02 ) iSu :10.64 ( 0.00 ) USC CCK 30.5 10 iPu :06.93 ( 0.01 ) iSu :10.89 (-0.03 ) ***** 1994 APRIL 7; 17:38 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940407 173857.2 34.729 83.044 1.3 9 23 343 0.1 D 1.2 360 1.2 73.5 1.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC SMT 23.4 17 ePu 17:39:01.14 ( 0.06 ) iSd 17:39:04.05 (-0.05 ) USC JVW 29.6 8 iPu :02.08 ( 0.01 ) iSu :05.94 ( 0.07X) USC BG3 31.1 19 ePu :02.36 ( 0.05 ) eSu :06.25 (-0.05 ) USC BC 32.1 2 iPu :02.42 (-0.06 ) iSd :06.71 ( 0.12 ) USC CCK 33.0 8 iPd :02.60 (-0.02 ) iSu :06.95 ( 0.10 ) ***** 1994 APRIL 9; 10:12 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940409 101255.0 34.329 81.325 1.5 10 2 119 0.0 B 0.2 360 0.2 0.4 0.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR10 1.5 306 iPd 10:12:55.28 (-0.05 ) iSd 10:12:55.61 ( 0.00 ) USC MR01 2.7 82 iPd :55.42 (-0.04 ) iSd :55.84 ( 0.00 ) USC MR07 4.7 360 iPd :55.84 ( 0.05 ) iSu :56.44 ( 0.02 ) USC MR05 6.8 187 iPd :56.28 ( 0.16X) iSd :57.06 ( 0.05 ) USC JSC 8.0 132 iPu :56.29 (-0.06 ) iSd :57.33 (-0.08 ) USC MR02 17.4 150 iPd :58.03 ( 0.17X) iSd :13:00.07 ( 0.00 ) ***** 1994 APRIL 26; 17:14 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940426 171406.0 34.823 82.816 2.9 7 10 272 0.1 D 1.7 360 1.7 8.4 1.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MMC 10.3 242 ePu 17:14:07.67 (-0.10 ) eSu 17:14:09.21 ( 0.04 ) USC SMT 18.6 310 ePu :09.03 (-0.07 ) iSd :11.54 ( 0.01 ) USC BG3 21.6 331 ePu :09.69 ( 0.10 ) eSu :12.38 (-0.03 ) USC CCK 27.4 324 ePd :10.59 ( 0.08 ) eSu :14.14 ( 0.09X) ***** 1994 MAY 11; 05:13 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940511 051334.0 34.334 81.332 0.3 10 1 119 0.1 B 0.3 360 0.3 0.9 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR10 0.6 301 iPu 05:13:34.07 (-0.04 ) iSu 05:13:34.17 ( -0.05 ) USC MR01 3.4 93 iPu :34.18 (-0.37X) iSd :34.98 ( -0.01 ) USC MR07 4.1 9 iPd :34.74 ( 0.03 ) iSu :35.33 ( 0.05 ) USC MR05 7.3 181 iPd :35.30 ( 0.06 ) iSu :36.28 ( 0.08 ) USC JSC 8.9 132 iPd :35.50 (-0.03 ) iSu :36.62 ( -0.09 ) USC MR02 18.2 149 iPu :37.70 ( 0.67X) iSu :39.29 ( -0.07 ) ***** 1994 MAY 12; 16:02 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940512 160256.3 34.723 82.840 5.8 8 26 348 0.1 D 2.5 360 2.5 7.5 1.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC SMT 26.0 332 iPu 16:03:00.74 ( 0.09 ) eSu 16:03:03.97 ( -0.09 ) USC BG3 31.1 344 iPu :01.44 (-0.02 ) iSu :05.56 ( 0.06 ) USC JVW 33.2 334 iPd :01.82 ( 0.03 ) eSd :06.09 ( 0.00 ) USC CCK 36.0 337 iPu :02.15 (-0.10 ) eSu :06.91 ( 0.01 ) ***** 1994 JULY 23; 01:12 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940723 011215.9 34.364 81.361 0.1 10 3 290 0.0 C 0.8 360 0.8 1.3 2.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR07 3.4 77 iPu 01:12:16.51 (-0.05 ) iSu 01:12:17.06 ( 0.03 ) USC MR10 3.7 145 iPu :16.66 ( 0.04 ) iSd :17.08 ( -0.06 ) USC MR01 7.0 121 iPu :17.16 ( 0.03 ) iSd :18.01 ( -0.02 ) USC JSC 13.1 135 iPu :18.21 ( 0.03 ) iSu :19.91 ( 0.03 ) USC MR02 22.4 148 iPu :19.71 ( 0.02 ) iSd :22.56 ( 0.02 ) ***** 1994 JULY 28; 16:04 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940728 160431.5 34.305 81.262 2.7 6 3 213 0.0 C 2.2 360 2.2 0.8 1.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC JSC 2.8 177 iPu 16:04:32.12 (-0.07 ) iSu 16:04:32.73 ( 0.02 ) USC MR01 4.3 314 iPd :32.35 ( 0.03 ) iSu :32.95 ( 0.01 ) USC MR02 12.7 167 iPu :33.72 ( 0.03 ) iSu :35.33 ( -0.03 ) ***** 1994 JULY 29; 16:56 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 940729 165640.2 34.743 82.949 1.4 6 21 356 0.1 D 5.6 360 5.6 78.3 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC SMT 20.9 354 eP- 16:56:43.66 (-0.03 ) eS- 16:56:46.36 (-0.04 ) USC JVW 28.0 351 eP- :44.86 ( 0.03 ) eS+ :48.39 (-0.05 ) USC CCK 31.3 353 eP- :45.36 ( 0.00 ) iSd :49.46 ( 0.08 ) ***** 1994 AUGUST 9; 04:12 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** CSU Felt by many residents in the Lake Keowee, SC, area. Magnitude 2.25. TVA Probably a reservoir related event. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 940809 041226.6 34.705 82.888 0.0 14 183 249 0.2 C B/D 1.2 -27 0.5 0.9 A 2.3 USC 940809 041226.8 34.786 82.891 0.8 8 2 167 0.0 B 0.4 360 0.4 0.6 2.3 F SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA BRTN 183.3 1 eP 04:12:55.95 ( 0.02 ) eS 04:13:16.60 (-0.15 ) TVA TQTN 190.2 299 eP :57.20 ( 0.16 ) iS :16.75 (-1.90X) TVA OLT 201.3 285 eP :58.60 (-0.22 ) eS :21.90 ( 0.21 ) TVA SLTN 205.0 20 eP :59.40 (-0.01 ) eS :23.00 ( 0.30 ) TVA LKGA 237.1 269 eP :13:04.10 ( 0.04 ) eS :31.40 (-0.07 ) TVA ANTN 267.9 308 eP :07.90 ( 0.05 ) eS :38.00 (-0.37 ) TVA ABTN 320.9 295 eP :15.00 ( 0.63 ) iS :50.90 ( 1.00 ) TVA MSAL 346.9 274 eS :58.10 ( 2.55X) TVA FDKY 350.2 312 eP :20.55 ( 2.58X) eS :56.65 ( 0.37 ) TVA HAKY 427.0 310 S? :14:15.40 ( 2.38X) USC MMC 2.3 252 iPd 04:12:27.22 (-0.01 ) eSu 04:12:27.56 (-0.02 ) USC JVW 24.9 337 iPd :30.95 ( 0.02 ) eSu :34.14 (-0.02 ) USC CCK 27.8 341 iPu :31.46 ( 0.06 ) iSu :34.94 (-0.07 ) USC PRM 91.9 148 ePd :41.78 ( 0.04 ) eSd :53.37 (-0.04 ) Additional Data: GIT ATL P 04:13:41.0 S 04:13:52.5 ***** 1994 OCTOBER 21; 16:08 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941021 160818.8 34.746 83.067 1.3 12 14 291 0.0 D 0.3 360 0.3 43.1 0.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MMC 14.4 75 iPd 16:08:21.22 (-0.01 ) eSu 16:08:23.15 ( 0.03 ) USC SMT 22.3 23 ePu :22.52 ( 0.02 ) iSd :25.32 (-0.07 ) USC JVW 28.0 13 ePu :23.45 ( 0.02 ) eSu :27.05 ( 0.02 ) USC BG3 30.0 24 ePu :23.81 ( 0.06 ) eSu :27.62 ( 0.01 ) USC BC 30.3 6 ePu :23.82 ( 0.03 ) eSu :27.65 (-0.03 ) USC CCK 31.4 13 iPd :23.94 (-0.04 ) eSu :28.05 ( 0.03 ) ***** 1994 NOVEMBER 29; 19:44 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941129 194432.5 34.744 82.994 2.5 6 8 292 0.1 D 1.5 360 1.5 6.9 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MMC 8.2 61 ePd 19:44:33.96 ( 0.05 ) eSu 19:44:35.01 (-0.03 ) USC SMT 20.8 6 iPd :35.97 ( 0.04 ) iSu :38.70 ( 0.06 ) USC BC 30.6 354 ePu :37.45 (-0.05 ) iSd :41.38 (-0.05 ) ***** 1994 NOVEMBER 29; 22:54 - MONTICELLO RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941129 225428.9 34.346 81.303 1.8 9 2 188 0.0 C 0.1 360 0.1 0.2 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MR01 1.7 156 iPd 22:54:29.30 ( 0.00 ) iSd 22:54:29.63 ( 0.02 ) USC MR10 3.3 252 iPd :29.54 (-0.01 ) iSd :30.03 (-0.01 ) USC MR07 3.4 324 iPu :29.54 (-0.02 ) iSu :30.06 ( 0.00 ) USC JSC 8.3 151 iPd :30.35 ( 0.00 ) iSd :31.42 (-0.03 ) USC MR02 18.2 158 iPd :32.01 ( 0.06 ) iSu :34.44 ( 0.17X) ***** 1994 DECEMBER 20; 19:05 - KEOWEE RESERVOIR, SOUTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 941220 190504.8 34.741 83.075 6.6 6 15 294 0.0 C 1.1 360 1.1 2.7 1.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) USC MMC 15.2 73 iPu 19:05:07.55 ( 0.00 ) iSu 19:05:09.68 ( 0.00 ) USC BC 31.0 7 iPd :09.98 (-0.01 ) iSu :14.09 ( 0.05 ) USC CCK 32.2 14 iPd :10.19 ( 0.00 ) eSu :14.37 (-0.01 ) SEISMIC STATION LISTING AND NETWORK MAPS Stations operating in the SEUSSN during the report period are listed below. Changes to the network (new stations, stations that have been closed, etc.) may be found at the end of this listing. A list of operator code definitions may be found in the section entitled DEFINITIONS AND NETWORK OPERATOR CODES. After the station listing is a plot of all the stations, followed by maps of individual networks (with station identification codes) operated by major member agencies or groups of the SEUSSN. Sta. Lat. N Lon. W Elev. Dates Current Code (Dg-Min) (Dg-Min) (M) Open-Clo Operator Locality ABTN 35-53.13 86-06.54 363 8409- TVA Auburntown, TN AMG 32-03.56 84-13.06 122 7309- GSW Americus, GA ANTN 36-10.30 85-13.88 612 8305- TVA Anderson, TN ASB 35-37.74 79-46.38 227 - UNC Asheboro, NC ATL 33-26.00 84-20.25 272 6306- GIT Atlanta, GA BAV 37-13.32 80-25.50 622 7309- VTSO Blacksburg, VA BBG 34-52.44 83-48.66 1355 8201- CERI Brasstown Bald, GA BC 35-01.06 83-01.88 860 8701- DPC Bad Creek Res., SC BCS 32-58.78 80-03.92 9 8701- CSU -USGS Charleston Southern Univ., SC BENN 35-33.90 81-39.66 878 8201- CERI Benn Knob, NC BG3 34-59.58 82-55.90 366 86 - DPC Lake Jocassee, SC BHT 35-50.82 84-56.70 826 8110- CERI Blowhole, TN BLA 37-12.68 80-25.21 634 6209- VTSO Blacksburg, VA BRBC 35-44.34 82-17.16 1976 8205- CERI Mt. Mitchell, NC BRTN 36-21.40 82-52.07 630 8606- TVA Brown Mtn., TN BTR 36-10.56 78-45.78 122 - UNC Butner, NC BVD 39-46.49 75-29.96 58 8502- DGS Bellevue State Park, DE BWD 39-47.96 75-34.60 63 8502- DGS Brandywine State Park, DE CBN 38-12.30 77-22.40 70 71 - USGS Corbin, VA CCK 35-01.3 782-59.49 701 9201- USC Bad Creek Res., SC CCVA 36-36.18 83-40.02 571 8211- CERI Cudjo Cave, VA CDG 34-36.65 84-40.00 332 - GIT Carters Dam, GA CEH 35-53.46 79-05.58 152 7508- UNC Chapel Hill, NC COR 35-33.30 78-59.34 91 - UNC Corinth, NC COW 33-22.90 80-41.96 60 7710- USC Cow Castle Creek, SC CRTN 36-11.99 83-50.44 488 8408- TVA Comb Ridge, TN CVL 37-58.88 78-27.65 167 7807- VTSO Charlottesville, VA CVV 37-58.88 78-27.65 167 7404- VDMR Charlottesville, VA DALG 34-46.43 85-00.47 329 9103- GIT Dalton, GA DRC 33-06.45 80-23.30 20 8303- CSU -USGS Dorchester, SC ETT 35-19.56 84-27.30 588 8111- CERI Etowah, TN EVE 25-23.24 80-40.97 2 8910- UFL Homestead, FL FDKY 36-47.40 85-47.65 306 8703- TVA Freedom, KY FGTN 36-26.02 83-11.72 509 9112- CERI TN FKT 35-47.04 86-58.26 321 9310- TVA Franklin, TN GAI 29-39.02 82-20.01 51 7711- UFL Gainesville, FL GBTN 35-39.96 84-12.66 326 8303- CERI Greenback, TN GFM 36-06.66 81-48.42 1726 8205- CERI Grandfather Mtn., NC GHV 37-47.65 78-06.44 107 7810- VTSO Goochland, VA GLT 36-21.72 86-29.88 159 8111- CERI-VCSS Gallatin, TN GMG 34-50.16 84-40.20 1097 8509- CERI Grassy Mtn., GA GRB 36-04.02 79-44.70 236 - UNC Greensboro, NC HAKY 37-06.34 86-35.10 169 8706- TVA Hadley, KY HBF 32-56.85 80-19.96 10 7303- USC Harts Bluff, SC HPKT 35-55.56 83-52.74 305 8003- GIT -TVA Knoxville, TN HWD 32-44.33 80-17.01 9 8303- CSU -USGS Hollywood, SC HWV 37-35.43 80-50.45 521 7804- VTSO Hinton, WV JSC 34-16.90 81-15.62 120 7405- USC Jenkinsville, SC JVW 34-59.54 82-59.86 554 9111- USC Bad Creek Res., SC LAL 34-26.20 87-20.23 320 8903- TVA Leola, Alabama LEX 37-47.36 79-26.50 311 7105- WAL Lexington, VA LHS 34-28.57 80-48.37 120 7405- USC Liberty Hill, SC LKGA 34-37.40 85-28.33 655 8512- TVA Lookout Mtn., GA MGS 32-53.87 80-08.46 9 7603- CSU -USC Middleton Gardens, SC MMC 34-46.79 82-54.91 280 8707- DPC Morgan Memorial Church, SC MOTN 36-37.08 87-59.20 177 8308- TVA Model, TN MRG 39-37.98 79-57.26 281 7511- WVU Morgantown, WV MR01 34-19.91 81-17.74 131 7711- USC -SCEG Monticello Res., SC MR02 34-11.58 81-13.81 84 7711- USC -SCEG Monticello Res., SC MR05 34-16.05 81-20.05 103 7807- USC -SCEG Monticello Res., SC MR07 34-22.32 81-19.50 134 7807- USC -SCEG Monticello Res., SC MR10 34-20.18 81-20.25 137 7807- USC -SCEG Monticello Res., SC MSAL 34-50.80 86-40.41 260 8307- TVA Monte Sano, AL MTT 33-45.02 81-38.40 182 7608- USC Monetta, SC NAV 37-18.94 80-47.61 610 7710- VTSO Narrows, VA NA12 37-59.29 77-52.62 134 7808- VTSO North Anna, VA NED 39-42.25 75-42.49 47 7211- DGS Newark, DE OLT 35-09.00 85-01.44 445 9306- TVA Ooltewah, TN ONTN 36-28.89 84-26.60 635 8402- TVA Oneida, TN ORT 35-54.57 84-18.29 370 75 - TVA Oak Ridge, TN PBV 36-58.94 77-31.87 49 7811- VTSO Petersburg, VA PDTN 35-16.40 85-50.97 335 8509- TVA Piedmont, TN PKNC 36-02.76 81-09.48 785 8211- CERI Pores Knob, NC PLVA 36-39.98 81-09.63 1353 8211- CERI Point Lookout, VA PRM 34-04.98 82-21.78 254 7507- USC Parsons Mtn., SC PWLA 34-58.80 88-03.84 204 8005- CERI- SLU Pickwick Lake, AL PWV 37-20.09 81-02.93 820 7803- VTSO Princeton, WV RBNC 35-21.42 82-59.16 1829 8205- CERI Richland Balsam, NC RCG 34-58.50 85-20.88 468 8110- CERI Rock City, GA RGR 32-54.45 80-11.65 -52 8606- CSU -USGS (Roger Stewart) SC RICH 35-55.20 82-49.20 967 8306- CERI Rich Mtn., NC SAR 27-10.53 82-27.94 4 8910- UFL Osprey, FL SGS 33-11.55 80-30.57 25 7303- USC St. George, SC SLTN 36-26.59 82-07.23 1280 8401- TVA Sullivan, TN SMLT 33-45.18 84-02.72 238 9300-940 GIT Norris Lake, GA (temporary) SMT 34-55.85 82-58.26 498 7704- USC Smeltzer Mtn. (Jocassee), SC SRAV 33-19.50 81-40.80 91 - WSRC Savannah River Lab, SC SRPD 33-09.30 81-42.75 31 7608- WSRC Savannah River Lab, SC SRPN 33-19.74 81-35.33 95 7608- WSRC Savannah River Lab, SC SRPW 33-12.14 81-34.69 77 7608- WSRC Savannah River Lab, SC SVS 32-58.10 80-14.89 3 7603- USC Slandsville, SC TCT 36-00.32 87-33.17 245 8803- TVA Tennessee City, TN TKL 35-39.48 83-46.44 350 78 - CERI-TVA Tuckaleechee Caverns, TN TQTN 35-30.96 84-43.55 260 8607- TVA Tranquillity, TN TRYN 35-14.76 82-16.02 915 8303- CERI Tryon Peak, NC TWB 33-06.88 80-06.18 9 8803- CSU -USC Tillman's/White's Bay, SC VBV 36-47.12 76-06.48 5 7705- TCC Virginia Beach, VA VRN 33-02.19 80-56.39 30 7912-940 USC Varneville, SC VWV 37-27.96 80-23.50 963 8207- VTSO VA-WV Border WAK 30-14.83 84-17.90 5 9302- UFL Wakulla, FL WAS 32-50.81 80-16.30 9 8303- CSU -USGS West Ashley, SC WMV 37-06.51 80-58.23 1157 8210- VTSO Walker Mtn., VA WSSR 35-16.68 83-34.68 1340 8510- CERI Wesser Bald, NC WYC 31-12.32 82-23.39 43 9304- UFL Waycross, GA CHANGES TO THE SEUSSN STATION LISTING Station Code Operator Locality Change ASB UNC Asheboro, NC Opened - date unknown. BTR UNC Butner, NC Opened - date unknown. CFS USC -USGS Crossfire Tower, SC Closed late in 1993. COR UNC Corinth, NC Opened - date unknown. GBV NASA Green Bank, WV Closed - date unknown. GRB UNC Greensboro, NC Opened - date unknown. NA12 VTSO North Anna, VA Coordinates modified. VRN USC Varneville, SC Closed August 1994. TEMPORARY SEUSSN STATION LISTING Station Code Operator Locality Change SMLT GIT Norris Lake Closed March 1994. FIGURE 10. Seismic stations (triangles) operating in the SEUSSN during the report period. The SEUSSN monitoring area is outlined. FIGURE 11. Georgia Tech - Geological Survey Of Alabama Seismic Network. FIGURE 12. South Carolina Seismic Network. FIGURE 13. Center for Earthquake Research and Information -Southern Appalachian Regional Seismic Network. FIGURE 14. Tennessee Valley Authority Seismic Network. FIGURE 15. University of Florida Seismic Network. FIGURE 16. Virginia Tech Seismic Network. FIGURE 17. University of North Carolina-Chapel Hill Seismic Network. ACCESSING DIGITAL WAVEFORM DATA AND OTHER INFORMATION FROM THE VIRGINIA TECH SEISMOLOGICAL OBSERVATORY OVERVIEW: The Virginia Tech Seismological Observatory (VTSO) has established computer access to its catalog and digital data bases through gopher and anonymous ftp servers on node vtso.geol.vt.edu (128.173.184.38). Waveform data currently available include data from the Virginia Regional Seismic Network and from the GSE (GSETT-2) short-period and broadband instruments located at Blacksburg, Virginia (co-sited with WWSSN station BLA). The BLA USNSN equipment officially went on-line in May 1995. The borehole instruments are a three-component broadband sensor package from Guralp. The waveform data are available from the U.S. Geological Survey in Golden via the AutoDRM retrieval system. Network data files consist of 32 channels, digitized at 100 sps at the Blacksburg collection node from (currently) 10 in Virginia and West Virginia. This acquisition system is being upgraded from its current 40 dB of dynamic range to a system with over 100 dB of dynamic range. The GSE data consist of six channels recorded with a 24 bit digitizer. The three short-period channels are sampled at 40 sps and the three broadband channels at 10 sps. Both the network and GSE stations are calibrated. A brief description of the available data is given below. For further information, help files are provided on the ftp and gopher servers. If one has problems, or wants data in a format other than that provided, contact Matthew Sibol (sibol@vtso.geol.vt.edu or 703-231-4707). NEAR-REAL-TIME WAVEFORM DATA: Every 20 minutes, triggered event waveform data files from the Virginia Tech Seismic Network are transferred from the digital acquisition system to an anonymous ftp account on vtso.geol.vt.edu. Given processing time, the longest delay expected between the recording of an event and its availability via anonymous ftp is 30 minutes. These data are raw triggers with no event information. The data are in demultiplexed UNIX_SUDS_1 format. The source code and an executable version of program to convert from UNIX_SUDS_1 format to SAC format (called st2sac) is available on the directory where these data files are located. SELECTED DIGITAL WAVEFORM DATA SETS: For events of particular interest, processed waveform data sets from the network and/or the GSE are prepared and put in subdirectories accessible through ftp and/or gopher. Waveform data from the network will have the timing and digitizing rates double-checked against a satellite time code channel, and the traces will all be corrected to the Virginia Tech standard response. The waveform data are in either the SAC or the Center for Seismic Studies (CSS) database structure binary formats. OTHER INFORMATION AVAILABLE: Other data and information available from the Virginia Tech Seismological Observatory (node: vtso.geol.vt.edu) include: o Updated overview of available information by finger, telnet, or e-mail from quake@vtso.geol.vt.edu. o Unprocessed data from the GSE station for selected events (in binary CSS format). O Channel information such as station locations, instrument responses (in both pole-zero and frequency-amplitude-phase formats), station calibration histories, etc. O Southeastern U. S. Seismic Network (SEUSSN) Bulletins. O SEUSSN earthquake catalog (for July 1977 through the current Bulletin) and a catalog of historic and instrumentally located earthquakes for the southeastern United States (from the year 1698 through the current Bulletin). DEFINITIONS AND NETWORK OPERATOR CODES Below are some entries in this Bulletin that might require definition. Also given is a detailed listing of agencies or groups (and their letter codes) that supply information to this Bulletin. AZM: Azimuthal angle from epicenter to station as measured from north (in deg), DEP: Focal depth estimate (in km); FXD indicates that the depth was held fixed during the epicentral determination, DIST (KM) Epicentral distance (in km) between the epicenter a station, ERROR ELLIPSE: Semi-axes, expressed as lengths (km) and azimuths deg), of the vertical projection of the error ellipsoid (Lahr, 1980). Horizontal axes are as the semi-major axis (ERHMAX), it's (AZ), and the semi-minor axis (ERHMIN). The axis (ERZ) is the largest vertical deviation of the error ellipsoid from the. A quality measure (Q) for the ellipsoid based on the length of the largest semi-axis (ERHMAX, ERHMIN, or ERZ) may also be supplied. For Bulletin the following statistics apply for estimates: CERI, TVA, and VTSO: Error ellipse projected semi-axes from HYPOELLIPSE corresponding to chi-square statistic (68%) with one degree of freedom, GIT: Error ellipse projected semi-axes from LOCA, and USC: Standard error estimates from HYPO71. NEIC and USGS: Unknown, GAP: The largest azimuthal separation (in deg) between recording stations, HYPOELLIPSE: Computer hypocenter location program (Lahr, 1980), HYPO71: Computer hypocenter location program (Lee and Lahr, 1974), LOCA: Computer hypocenter location program developed at the Georgia Institute of Technology, MBN or mb(Lg): Body wave magnitude determination using Nuttli's formulas for the Lg phase (Nuttli, 1973), MDB, MDL, MD: Duration/coda length magnitude that approximates either the mb, ML, or an unknown magnitude scale, respectively. As of June 1986 (SEUSSN Bulletin 17), using a duration magnitude approximating mb(Lg) are CERI, DGS, GIT, TVA and VTSO. Specifically: CERI: MDB = -2.36 + 2.23 Log(D) + 0.12 Log(K) (MDB > 2.6) MDB = -3.38 + 2.74 Log(D) (MDB < 2.7) VTSO, TVA, and GIT: MDB = -3.45 + 2.85 Log(D) where D is signal duration measured from the P-wave arrival time to the time when the signal returns to background noise, and K is the epicentral distance in kilometers. Those using a duration magnitude approximating ML are USC and USGS. Specifically: USGS: MDL = -0.87 + 2.0 Log(D) + 0.0035 X where D is signal duration measured from the P-wave arrival time to the time when the signal returns to twice background noise, and X is the epicentral distance in kilometers. For more information please see SEUSSN Bulletin (page 1) or contact the agency making the estimate for details on their specific procedure, ML: Local magnitude; contact the agency or group making the estimate for details on their specific procedure, NO: Number of P, S, and S-P readings used in locating the event, PHASE: Phase descriptions for either P or S waves, or S-P times. Included under this heading may also be the descriptors; 'i' for an impulsive arrival or 'e' for an emergent arrival. Preliminary first motions may also be given for P wave polarities. These include; 'u', 'c', or '+' for a compressional first arrival, and 'd' or '-' for a dilatational first arrival. '?' indicates that the arrival time is questionable. Q: Solution quality of the hypocenter (the average of the SQD quality measures, see below; Lee and Lahr, 1974), RES: Arrival time residual (the difference between the observed and the calculated arrival time, in seconds). An "X" following the value of the arrival time residual means that the arrival time was not used to compute the location of that event, RMS: Root-mean-square of the weighted arrival time (in sec), S-P: Difference between the S and P wave arrival times (in sec), SQD: Measures of the statistical quality of the solution (S), and of the distribution of stations (D) around the hypocenter (Lee and Lahr, 1974), *XXXX: Code indicating the agency or group that made the hypocentral/magnitude determination; a listing of and groups that operate seismographs in the SEUSSN and/or who supply information to this BULLETIN follows. OPERATOR CODES CERI - Center for Earthquake Research and Information, TN (formerly Tennessee Earthquake Information Center, TEIC, changed 7/1/87) CPL - Carolina Power and Light Company, NC CSU - Charleston Southern University, SC (formerly BCC, Baptist College at Charleston, SC, changed 1991) DGS - Delaware Geological Survey, DE DPC - Duke Power Company, SC GIT - Georgia Institute of Technology, GA GSA - Geological Survey of Alabama, AL GSW - Georgia Southwestern College, GA MGS - Maryland Geological Survey, MD NASA - National Aeronautics and Space Administration/Goddard Space Flight Center, WV NEIC - National Earthquake Information Center, USGS, CO SCEG - South Carolina Electric and Gas Company, SC SLU - St. Louis University, MO TCC - Tidewater Community College, VA TVA - Tennessee Valley Authority, TN UFL - University of Florida, FL UNC - University of North Carolina, NC USC - University of South Carolina, SC USGS - United States Geological Survey, CO UTM - University of Tennessee at Martin, TN VDMR - Virginia Division of Mineral Resources, VA VP - Virginia Power, VA VTSO - Virginia Tech Seismological Observatory, VA VSCC - Volunteer State Community College, TN WAL - Washington and Lee University, VA WSRC - Westinghouse Savannah River Company, SC WVGS - West Virginia Geological and Economic Survey, WV WVU - West Virginia University, WV SOUTHEASTERN U. S. BIBLIOGRAPHY (Post 1980) This bibliography lists papers on the seismicity of the southeastern United States and related subjects. Included are papers published since 1980--around the time that SEUSSN data have begun to appear in the literature. Individual papers in various meeting proceedings are not listed. Instead, the proceedings themselves are provided. The editors would appreciate any suggestions of additional references that have been overlooked. Acree, Steven D., Jill R. Acree, and Pradeep Talwani (1988). The Lake Keowee, South Carolina earthquakes of February through 1986, Seism. Res. Letters, v. 59, no. 2, pp. 63-70. Amick, David, Garry Maurath, and Robert Gelinas (1990). Characteristics of seismically induced liquifaction sites and features located in the vicinity of the 1886 Charleston, South Carolina earthquake, Seism. Res. Letters, v. 61, no. 2, pp. 117-130. Armbruster, J. G. and L. Seeber (1987). Seismicity 1886-89 in the southeastern United States. The aftershock sequence of the Charleston, SC, earthquake, Final Report (Sep 84-Feb 87), Nuclear Regulatory Commission Report NUREG/CR-4851, 45 pp. Bagwell, Joyce B. (1993). Intensity report for August 21, 1992 Ladson/Summerville, South Carolina earthquake, Appendix A, in SEUSSN Bull. 27, Virginia Tech Seismological Observatory, July, pp. 61-64. Beavers, James E., ed. (1981). Proceedings, Earthquakes and earthquake engineering: The eastern United States, v. 1-2, Knoxville, TN, 1189 pp. Beavers, James E., ed. (1986). Proceedings Third US Nat. Conf. on Earthquake Engineering, v. 1, Earthquake Eng. Res. Inst., Charleston, SC, 812 pp. Bellini, John J., Tony J. Bartolini, Kenneth M. Lord, and Douglas L. Smith (1994). Determination of the coefficient of seismic attenuation in Florida, Appendix E, in SEUSSN Bull. 28, Virginia Tech Seismological Observatory, July, p. 63. Bollinger, G. A. (1981). Southeastern United States earthquakes - 1979, Earthquake Notes, v. 52, no. 2, pp. 40-41. Bollinger, G. A., M. C. Chapman, M. S. Sibol, and J. K. Costain (1985). An analysis of earthquake focal depths in the southeastern United States, Geophys. Res. Letters, v. 12, no. 11, pp. 785-788. Bollinger, G. A. and J. K. Costain (1988). Long-term cyclicities in earthquake energy release and major river flow volumes in Virginia and Missouri seismic zones, Seism. Res. Letters, v. 59, no. 4, pp. 279-283. Bollinger, G. A., Frederick C. Davison, Jr., Matthew S. Sibol, and Jeffrey B. Birch (1989). Magnitude recurrence relations for the southeastern United States and its subdivisions, J. Geophys. Res., v. 94, no. B3, pp. 2857-2873. Bollinger, G. A., Arch C. Johnston, Pradeep Talwani, Leland T. Long, Kaye M. Shedlock, Matthew S. Sibol, and Martin C. Chapman (1991). Seismicity of the southeastern United States; 1698 to 1986, in Slemmons, D. B., E. R. Engdahl, M. D. Zoback, and D. D. Blackwell, eds., Neotectonics of North America: Boulder, CO, Geol. Soc. Am. Decade Map, v. 1, pp. 291-308. Bollinger, G. A., C. J. Langer, and S. T. Harding (1976). The eastern Tennessee earthquake sequence of October through December, 1973, Bull. Seism. Soc. Am., v. 66, no. 2, pp. 525-547. Bollinger, G. A. and M. S. Sibol (1982). Southeastern United States earthquakes - 1980, Earthquake Notes, v. 53, no. 4, pp. 50-52. Bollinger, G. A. and M. S. Sibol (1983). Southeastern United States earthquakes - 1981, Earthquake Notes, v. 54, no. 2, pp. 24-26. Bollinger, G. A. and M. S. Sibol (1983). Southeastern United States earthquakes - 1982, Earthquake Notes, v. 54, no. 2, pp. 27-29. Bollinger, G. A. and M. S. Sibol (1985). Seismicity, seismic reflection studies, gravity and geology of the central Virginia seismic zone: Part I. Seismicity, Geol. Soc. Am. Bull., v. 96, pp. 49-57. Bollinger, G. A., M. S. Sibol, and M. C. Chapman (1992). A comparison of magnitude scales for US earthquakes, Appendix F, in SEUSSN Bull. 26, Virginia Tech Seismological Observatory, June, pp. 63-76. Bollinger, G. A., M. S. Sibol, and M. C. Chapman (1992). Maximum magnitude estimation for an intraplate setting - Example: The Giles County, Virginia, seismic zone, Seism. Res. Letters, v. 63, no. 2, pp. 139-152. Bollinger, G. A., M. S. Sibol, M. C. Chapman, and J. A. Snoke (1993). Virginia Regional Seismic Network, Final Report (1986-1992), Nuclear Regulatory Commission Report NUREG/CR-6058, 103 pp. Bollinger, G. A., J. A. Snoke, M. S. Sibol, and M. C. Chapman (1986). Virginia Regional Seismic Network, Final Report (1977-1985), Nuclear Regulatory Commission Report NUREG/CR-4502, 57 pp. Bollinger, G. A. and Russell L. Wheeler (1983). The Giles County, Virginia, seismic zone, Science, v. 219, pp. 1063-1065. Carts, D. A. and G. A. Bollinger (1981). A regional crustal velocity model for the southeastern United States, Bull. Seism. Soc. Am., v. 71, no. 6, pp. 1829-1847. Chapman, Martin C. (1994). Probabilistic seismic hazard analysis for Virginia, Appendix C, in SEUSSN Bull. 17, Virginia Tech Seismological Observatory, July, pp. 59-60. Chapman, Martin C., G. A. Bollinger, M. S. Sibol, and D. E. Stephenson (1990). Influence of the coastal plain sedimentary wedge on strong ground motions from the 1886 Charleston, South Carolina, earthquake, Earthquake Spectra, v. 6, no. 4, pp. 617-640. Chapman, Martin C., J. A. Snoke, and G. A. Bollinger (1988). A procedure for calibrating short-period telemetered seismograph systems, Bull. Seism. Soc. Am., v. 78, no. 6, pp. 2077-2088. (Excerpts also in Appendix E, SEUSSN Bull. 22, Virginia Tech Seismological Observatory, December, pp. 87-88.) Cornagie, Donald P. and Donna M. Speranzella (1986). Study of traveltime residuals at the stations of the Virginia Tech seismic network, Appendix E, in SEUSSN Bull. 17, Virginia Tech Seismological Observatory, June, pp. 69-73. Davison, Frederick C. and Melissa J. Bode (1987). A note on the December 1986-January 1987 Richmond, Virginia, felt earthquake sequence, Seism. Res. Letters, v. 58, no. 3, pp. 73-80. Davison, Frederick C., Martin C. Chapman, Jeffrey W. Munsey, and G. A. Bollinger (1984). A note on the Cunningham, Virginia, earthquake of August 17, 1984, in the central Virginia seismic zone, Earthquake Notes, v. 55, no. 4, pp. 26-33. Elton, David J. and Eugene A. Marciano (1990). Ground acceleration near St. Michael's church during the 1886 Charleston, SC, earthquake, Earthquake Spectra, v. 6, no. 1, pp. 81-103. Elton, David J. and James R. Martin (1989). Dynamic site periods in Charleston, SC, Earthquake Spectra, v. 5, no. 4, pp. 703-734. Fletcher, J. B., J. Boatwright, and W. B. Joyner (1983). Depth dependence of source parameters at Monticello, South Carolina, Bull. Seism. Soc. Am., v. 73, no. 6, pp. 1735-1751. Garbin, H. D. (1982). Determining local geological structure in Tennessee by using spectral ratios, Dept. of Energy Report DE82014348, 20 pp. Gohn, Gregory S., ed. (1983). Studies related to the Charleston, South Carolina, earthquake of 1886 - Tectonics and seismicity, US Geol. Survey Prof. Paper 1313, 300 pp. Gore, P.J.W. and L. T. Long (1994). Studying Earthquake Intensities in Georgia, The Georgia Science Teacher, v. XXXVI, no. 1, pp. 4-6. Hadj, Hamou Tarik and David J. Elton (1989). Liquefaction susceptibility map for peninsular Charleston, South Carolina, Bull. Assn. Eng. Geologists, v. XXVI, no. 3, pp. 309-323. Hanson, Robert D., Raymond W. Anderson, G. A. Bollinger, Ricardo Dobry, Jiin-Long Huang, and Delbert B. Ward (1980). Northern Kentucky earthquake, July 27, 1980, Eqke. Eng. Res. Inst., 105 pp. Herrmann, Robert B. (1986). Surface-wave studies of some South Carolina earthquakes, Bull. Seism. Soc. Am., v. 76, no. 1, pp. 111-121. Herrmann, Robert B., Charles A. Langston, and James E. Zollweg (1982). The Sharpsburg, Kentucky, earthquake of 27 July 1980, Bull. Seism. Soc. Am., v. 72, no. 4, pp. 1219-1239. Hopkins, Richard (1983). Tennessee Valley Authority seismic monitoring program, Appendix C, in SEUSSN Bull. 12, Virginia Tech Seismological Observatory, December 1983, pp. 65-72. Howell, B. F., Jr. (1994). Earthquake recurrence rates in the central Atlantic United States, Seism. Res. Letters, v. 65, no. 2, pp. 149-156. Jacob, K. H., ed. (1987). Proceedings Symp. on Seismic Hazards, Ground Motions, Soil-Liquefaction and Engineering Practice in Eastern North America, Tech. Report NCEER-87-0025, Sterling Forest, NY, 521 pp. Johnston, Arch C., Donald J. Reinbold, and Stephen I. Brewer (1985). Seismotectonics of the southern Appalachians, Bull. Seism. Soc. Am., v. 75, no. 1, pp. 291-312. Johnston, Arch C. and James E. Zollweg (1987). Two new regional seismic networks in the central and southeastern United States, Earthquake Notes, v. 52, no. 2, pp. 66-71. Jones, Frank B., L. T. Long, K.-H. Zelt, and M. C. Chapman (1985). Columbus, Georgia, earthquakes of October 31, 1982, Earthquake Notes, v. 56, no. 2, pp. 55-61. Long, Leland Timothy (1990). Georgia/Alabama regional seismographic network. Final Report, August 1985-October 1990, Nuclear Regulatory Commission Report NUREG-CR-5258-V4, 133 pp. Long, Leland Timothy (1992). The May 1991 Dawson County, Georgia, earthquakes, Appendix D, in SEUSSN Bull. 26, Virginia Tech Seismological Observatory, June, pp. 59-60. Long, L. T., A. Kocaoglu, R. Hawman, and P.J.W. Gore (1994). The Norris Lake earthquake swarm of June through September, 1993: Preliminary Findings, Seism. Res. Letters, v. 65, no. 2., pp. 167-171. Long, L. T. and J. S. Liow (1986). Study of seismicity and earthquake hazard in northern Alabama and adjacent parts of Tennessee and Georgia: Summary report covering May 1980-July 1985, Nuclear Regulatory Commission Report, NUREG/CR-4706, 72 pp. Long, Leland Timothy, Karl-Heinz Zelt, Jeih-San Liow, and Russell Propes (1986). The north Georgia earthquake of October 9, 1984, Earthquake Notes, v. 57, no. 3, pp. 77-82. Luetgert, James H., Harley M. Benz, and Sriram Madabhushi (1994). Crustal structure beneath the Atlantic coastal plain of South Carolina, Seism. Res. Letters, v. 65, no. 2, pp. 180-191. Madabhushi, Sriram and Pradeep Talwani (1993). Fault plane solutions and relocations of recent earthquakes in Middleton Place Summerville seismic zone near Charleston, South Carolina, Bull. Seism. Soc. Am., v. 83, no. 5, pp. 1442-1466. Marion, George E. and Leland Timothy Long (1980). Microearthquake spectra in the southeastern United States, Bull. Seism. Soc. Am., v. 70, no. 4, pp. 1037-1054. Marple, Ronald T. and Pradeep Talwani (1992). The Woodstock lineament: A possible surface expression of the seismogenic fault of the 1886 Charleston, South Carolina, earthquake, Seism. Res. Letters, v. 63, no. 2, pp. 153-160. Mauk, Frederick J., Doug Christensen, and Steve Henry (1982). The Sharpsburg, Kentucky earthquake 27 July 1980: Main shock parameters and isoseismal maps, Bull. Seism. Soc. Am., v. 72, no. 1, pp. 221-236. Munsey, Jeffrey W. (1994). Earthquake strong motion recording in the southeastern United States, Appendix D, in SEUSSN Bull. 28, Virginia Tech Seismological Observatory, July, pp. 61-62. Munsey, Jeffrey W. and G. A. Bollinger (1985). Focal mechanism analysis for Virginia earthquakes, Bull. Seism. Soc. Am., v. 75, no. 6, pp. 1613-1636. Nava, S., A. Johnston, J. Cornwell, and A. Metzger (1983). Earthquakes in the southern Mississippi Valley and southern Appalachians - 1981-82, Earthquake Notes, v. 54, no. 2, pp. 30-37. Nava, Susan J., Jeffrey W. Munsey, and Arch C. Johnston (1989). First fault plane identification in the southern Appalachians: The mbLg Vonore, Tennessee, earthquake of March 27, 1987, Seism. Res. Letters, v. 60, no. 3, pp. 119-129. Nowroozi, Ali A. (1991). Seismotectonic provinces of the southeastern United States based on suspect terranes, Seism. Res. Letters, v. 62, no. 3-4, pp. 211-220. Nuttli, Otto W., G. A. Bollinger, and Robert B. Herrmann (1986). The 1886 Charleston, South Carolina, earthquake - A 1986 perspective, US Geol. Survey Circular 985, 52 pp. Oaks, S. D. and G. A. Bollinger (1986). The epicenter of the mb 5, December 22, 1875 Virginia earthquake: New findings from documentary sources, Earthquake Notes, v. 57, no. 3, pp. 65-75. Obermeier, S. F., R. B. Jacobson, J. P. Smoot, R. E. Weems, G. S. Gohn, J. E. Monroe, and D. S. Powars (1990). Earthquake-induced liquefaction features in the coastal setting of South Carolina and in the fluvial setting of the New Madrid seismic zone, US Geol. Survey Prof. Paper 1504, 44 pp. Owens, T. J., S. R. Taylor, and G. Zandt (1983). Crustal structure beneath RSTN stations inferred from teleseismic P-waveforms: Preliminary results at RSCP, RSSD and RSNY, Dept. of Energy Report DE83016391, 29 pp. Person, Waverly J., ed. (1981). Seismological notes - July-August 1980, Bull. Seism. Soc. Am., v. 71, no. 3, pp. 935-937. Powell, Christine A. (1992). Seismic noise in northcentral North Carolina, Bull. Seism. Soc. Am., v. 82, no. 4, pp. 1889-1909. Powell, Christine A., G. A. Bollinger, Martin C. Chapman, Matthew S. Sibol, Arch C. Johnston, and Russell L. Wheeler (1994). A seismotectonic model for the 300-kilometer-long eastern Tennessee seismic zone, Science, v. 264, pp. 686-688. Prodehl, C., J. Schlittenhardt, and S. W. Stewart (1984). Crustal structure of the Appalachian highlands in Tennessee, Tectonophysics, v. 109, pp. 61-76. Rajendran, Kusala and Pradeep Talwani (1992). The role of elastic, undrained, and drained responses in triggering earthquakes at Monticello Reservoir, South Carolina, Bull. Seism. Soc. Am., v. 82, no. 4, pp. 1867-1888. Rankin, Douglas W., ed. (1977). Studies related to the Charleston, South Carolina, earthquake of 1886 - A preliminary report, US Geol. Survey Professional Paper 1028, 204 pp. Reger, James P. (1994). Summary of the Howard County, Maryland, earthquakes of 1993, Appendix A, in SEUSSN Bull. 28, Virginia Tech Seismological Observatory, July, pp. 49-55. Rhea, Susan (1984). Q determined from local earthquakes in the South Carolina coastal plain, Bull. Seism. Soc. Am., v. 74, no. 6, pp. 2257-2268. Rhea, Susan (1987). Wave conversions from earthquakes and a new velocity model for the South Carolina coastal plain, Bull. Seism. Soc. Am., v. 77, no. 6, pp. 2143-2151. Robinson, Andrew and Pradeep Talwani (1983). Building damage at Charleston, South Carolina, associated with the 1886 earthquake, Bull. Seism. Soc. Am., v. 73, no. 2, pp. 633-652. Rydelek, Paul A. and Lotte Hass (1994). On estimating the amount of blasts in seismic catalogs with Schuster's method, Bull. Seism. Soc. Am., v. 84, no. 4, pp. 1256-1259. Schaeffer, Malcolm F. (1991). Relationship between joint intensity and induced seismicity at Lake Keowee, northwestern South Carolina, Bull. Assn. Eng. Geologists, v. XXVII, no. 1, pp. 7-30. SEUSSN Contributors (1985). Availability of a six-year (1977-1983) earthquake catalog for the southeastern United States derived from network monitoring, Bull. Seism. Soc. Am., v. 75, no. 2, pp. 629-633. SEUSSN Operators (1980). SEUSSN program for coordinated aftershock monitoring of southeastern US earthquakes (mag „ 4.5), Appendix, in SEUSSN Bull. 5, Virginia Tech Seismological Observatory, May, pp. 33-35. (Also in SEUSSN Bull. 4.) Shedlock, Kaye M. (1987). Earthquakes recorded by the South Carolina seismic network (1974-1986), US Geol. Survey Open-File Report 87-437, 92 pp. (Excerpts also in Appendix D, SEUSSN Bull. 22, Virginia Tech Seismological Observatory, December, pp. 73-86.) Shedlock, Kaye M. (1988). Seismicity in South Carolina, Seism. Res. Letters, v. 59, no. 4, pp. 165-171. Sibol, M. S. (1980). A note on microseismic levels for the Virginia Tech seismic network, Appendix, in SEUSSN Bull. 5, Virginia Tech Seismological Observatory, May, pp. 44-47. Sibol, M. S. and G. A. Bollinger (1981). A note on recent seismic activity in the Scottsville, Virginia, area, Earthquake Notes, v. 52, no. 4, pp. 11-22. Street, R. (1982). Ground motion values obtained for the 27 July 1980 Sharpsburg, Kentucky, earthquake, Bull. Seism. Soc. Am., v. 72, no. 4, pp. 1295-1307. (See also: Erratum, Bull. Seism. Soc. Am., v. 73, no. 3, p. 899). Street, R., K. Taylor, D. Jones, J. Harris, G. Steiner, A. Zekulin, and D. Zhang (1993). The 4.6 mb, Lg northeastern Kentucky earthquake of September 7, 1988, Seism. Res. Letters, v. 64, no. 3-4, pp. 187-199. Street, R., A. Zekulin, M. Allsop, and D. Couch (1985). The spatial correlation between a lateral seismic velocity discontinuity in the precambrian basement rock and the Sharpsburg, Kentucky, earthquake of July 27, 1980, Earthquake Notes, v. 56, no. 2, pp. 47-54. Street, R., A. Zekulin, and J. Harris (1991). The Meade County, Kentucky, earthquakes of January and March 1990, Seism. Res. Letters, v. 62, no. 2, pp. 105-111. Talwani, Pradeep (1981). Earthquake prediction studies in South Carolina, in Simpson, David W. and Paul G. Richards, eds., Earthquake Prediction: An International Review, Am. Geophys. Union, pp. 381-393. Talwani, Pradeep and Keith Collinsworth (1988). Recurrence intervals for intraplate earthquakes in eastern North America from paleoseismological data, Seism. Res. Letters, v. 59, no. 4, pp. 207-211. Talwani, P. and K. Rajendrau (1991). The January 4, 1989, earthquake in Bluffton, South Carolina, and its tectonic implications, Seism. Res. Letters, v. 62, no. 2, pp. 139-142. Talwani, Pradeep, Jill Rawlins, and Dale Stephenson (1985). The Savannah River Plant, South Carolina, earthquake of June 9, 1985 and its tectonic setting, Earthquake Notes, v. 56, no. 4, pp. 101-106. Talwani, Pradeep and Donald Stevenson (1994). August 8, 1993, Aiken, South Carolina earthquake, Appendix B, in SEUSSN Bull. 28, Virginia Tech Seismological Observatory, July, pp. 57 -58. Tarr, Arthur C. (1982). Detection and location capability of the southeastern US seismic network, Appendix, in SEUSSN Bull. 9, Virginia Tech Seismological Observatory, May, pp. 36-42. (This report also appeared in earlier SEUSSN Bulletins.) Tarr, Arthur C., Pradeep Talwani, Susan Rhea, David Carver, and David Amick (1981). Results of recent South Carolina seismological studies, Bull. Seism. Soc. Am., v. 71, no. 6, pp. 1883-1902. Teague, Alan G., G. A. Bollinger, and Arch C. Johnston (1986). Focal mechanism analysis for eastern Tennessee earthquakes (1981-1983), Bull. Seism. Soc. Am., v. 76, no. 1, pp. 95-109. Tie, An, Jeih-San Liow, and L. T. Long (1986). Study of traveltime residuals at the seismic stations in the southeastern Tennessee area, Appendix F, in SEUSSN Bull. 18, Virginia Tech Seismological Observatory, December, pp. 73-77. Tsoflias, George P. (1991). A note on the Goochland County, Virginia earthquake of March 15, 1991, Seism. Res. Letters, v. 62, no. 3-4, pp. 225-231. (Excerpts also in SEUSSN Bull. 26, pp. 61-62.) Viret, Marc, G. A. Bollinger, J. A. Snoke, and J. W. Dewey (1984). Joint hypocenter relocation studies with sparse data sets - A case history: Virginia earthquakes, Bull. Seism. Soc. Am., v. 74, no. 6, pp. 2297-2311. Virginia Tech Seismological Observatory (1986). Calibration of the Virginia Tech digital seismic network, Appendix D, in SEUSSN Bull. 17, Virginia Tech Seismological Observatory, June, pp. 61-67. Virginia Tech Seismological Observatory (1986). Virginia earthquake relocation report, Appendix E, in SEUSSN Bull. 18, Virginia Tech Seismological Observatory, December, pp. 67-72. Virginia Tech Seismological Observatory (1986). Virginia Tech Seismological Observatory estimates of completeness for the southeastern U.S. seismicity catalog, Appendix D, in SEUSSN Bull. 18, Virginia Tech Seismological Observatory, December, p. 65. Yao, Paul C. and James Dorman (1992). Short-period surface-wave dispersion and shallow crustal structure of central and eastern Tennessee, Bull. Seism. Soc. Am., v. 82, no. 2, pp. 962-979. APPENDIX A THE AUGUST 6, 1994, COASTAL NORTH CAROLINA EARTHQUAKE: LARGE HIGH-FREQUENCY SPECTRAL AMPLITUDES FROM AN EVENT IN A REGION OF LOW SEISMICITY CHAPMAN, Martin C., Department of Geological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, Christine A. POWELL and Ginger CASTLE, Department of Geology, University of North Carolina, Chapel Hill, NC, 27599 A small earthquake occurred in coastal North Carolina on August 6, 1994, at 19:54:11.1 UTC. The epicenter, determined from arrival times at 11 stations, is 35.1 deg. N, 76.8 deg. W. The NEIC reported the magnitude as 3.6 mb(Lg). The shock was recorded by stations at regional distances in North Carolina, South Carolina and Virginia. The nearest station (CEH-Chapel Hill, NC) is at a distance of 227 km. The instrumental epicenter of the shock is uncertain by several kilometers, and the depth is unconstrained. The earthquake is the first to have occurred in the North Carolina Coastal Plain since regional network monitoring began during the mid 1970's. It was felt over an area of 24,000 square km. Intensity effects reached V MM in and near the towns of New and Washington. The intensity data, obtained from responses to requests for information published in local newspapers, establishes the epicenter of the shock approximately 20 km to the north of the instrumentally determined epicenter, close to a large phosphate mine. The open-pit mining operation pumps 30-40 million gallons of water per day from wells penetrating the Castle Hayne formation, a competent limestone at a depth of less than 200 m. The epicenter is within the 5000 square km cone of groundwater depression. The instrumental data at the closer stations are remarkable for their large spectral amplitudes at the higher frequencies. At CEH (Chapel Hill), the displacement amplitude spectrum of the Lg phase, uncorrected for attenuation, is essentially flat throughout the bandwidth of the recording system, from less than 0.5 Hz to greater than 12 Hz. Path correction of data from CEH and stations in the central Virginia network at distances less than 300 km indicate a source spectrum greatly enhanced at the high frequencies (>10 Hz), relative to a "standard" omega square, 100 bar stress drop source model. The proximity of the event to the mine, and the low level of natural seismicity in the area, suggest the possibility that the event was induced. Indeed, the event was very audible as an explosive sound near the epicenter. However, the high frequency spectral amplitudes and absence of Rg surface waves suggest a focus in the Paleozoic basement rock, below the shallow aquifer. NOTE: These results were presented at the 66th Annual Meeting of the Eastern Section of the Seismological Society of America in Columbia, South Carolina, on October 16-18, 1994. APPENDIX B ADDENDA Addenda I lists locational parameters for a 1988 earthquake near the Savannah River Plant in South Carolina. Addenda II lists the Tennessee Valley Authority locational parameters and arrival times for earthquakes in the last three months of 1989. Addenda III lists similar TVA data for all of 1990. Addenda I A small earthquake occurred near the Savannah River Plant (SRP), Aiken, South Carolina, on 5 August 1988. This event was not reported in SEUSSN Bulletin 23 (covering 1 July-31 December 1988) and, therefore, was not in the SEUSSN catalog of tectonic earthquakes. This earthquake was the subject of Savannah River Laboratory report (DPST-88-841) by D. E. Stephenson entitled "August 1988 Savannah River Plant Earthquake" dated September 1988. The following locations were provided by the University of South Carolina and the Westinghouse Savannah River Company. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I USC 880805 035921.8 33.216 81.664 2.9 8 112 0.1 B 0.5 360 0.5 2.8 2.2 WSRC 880805 035921.8 33.216 81.664 2.9 2.0 *Formerly the E.I. duPont de Nemours & Company Savannah River Laboratory. Addenda II Following are event locations and magnitudes submitted by the Tennessee Valley Authority for the last three months of 1989. ***** 1989 OCTOBER 3; 23:38 - SWEETWATER, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891003 233818.8 35.615 84.606 17.7 6 15 180 0.1 D D/C 99.0 -50 0.5 5.8 D -.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 15.4 225 iPd 23:38:22.81 ( 0.03 ) iS 23:38:25.66 (-0.01 ) TVA ORT 42.6 40 eP :26.44 (-0.06 ) iS :32.10 ( 0.00 ) TVA WMTN 52.6 219 P? :28.43 ( 0.42 ) eS :34.61 (-0.11 ) TVA TKL 75.5 86 eS :39.33 (-1.44X) TVA ANTN 83.7 318 S? :44.37 ( 1.41X) TVA LKGA 135.4 216 eS :57.60 ( 0.96X) ***** 1989 OCTOBER 5; 09:04 - ETOWAH, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891005 090430.6 35.361 84.641 16.6 12 19 156 0.1 C B/C 1.2 -47 0.4 1.8 B 0.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 18.8 336 iPc 09:04:34.80 ( 0.00 ) iS 09:04:37.91 ( 0.01 ) TVA WMTN 32.7 248 iP+ :36.72 (-0.01 ) iS :41.23 (-0.01 ) TVA ORT 68.0 26 eS :50.65 ( 0.16 ) TVA TKL 85.3 67 eP :44.45 (-0.26 ) eS :54.68 (-0.36 ) TVA LKGA 111.6 223 eP :49.03 ( 0.25 ) eS :05:02.55 ( 0.46 ) TVA ABTN 145.2 294 eP :53.52 (-0.38 ) eS :10.83 (-0.10 ) TVA FDKY 189.6 327 eP :05:01.02 ( 0.33 ) eS :23.80 ( 1.12X) ***** 1989 OCTOBER 10; 00:09 - DECHERD, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891010 000923.1 35.214 86.047 14.9 10 70 147 0.2 D C/D 0.9 -63 0.3 99.0 D 2.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA MSAL 70.2 235 eP- 00:09:34.92 (-0.03 ) eS 00:09:43.54 (-0.05 ) TVA ABTN 74.7 356 eP :36.07 ( 0.42 ) iS :44.65 (-0.16 ) TVA LKGA 84.0 141 S? :46.75 (-0.56X) TVA WMTN 97.9 87 eP :38.89 (-0.31 ) S? :50.60 (-0.35 ) TVA TQTN 124.7 74 eS :57.65 (-0.39 ) TVA ANTN 129.4 35 eP :44.21 ( 0.16 ) eS :59.31 (-0.03 ) TVA LAL 146.1 234 eP :46.93 ( 0.34 ) eS :10:04.94 ( 1.21X) TVA TCT 162.2 303 P? :50.31 ( 1.27X) eS :09.35 ( 1.37X) TVA FDKY 176.4 7 eP :52.21 ( 0.99X) eS :13.55 ( 1.81X) ***** 1989 OCTOBER 16; 02:07 - FT. PAYNE, ALABAMA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891016 020736.5 34.386 85.534 11.8 12 27 244 0.1 D C/D 1.7 -60 1.2 1.6 B 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 27.0 12 iPd 02:07:41.61 ( 0.03 ) iS 02:07:45.26 (-0.02 ) TVA WMTN 108.6 28 eP :54.11 (-0.31 ) eS :08:07.46 (-0.04 ) TVA MSAL 116.3 296 eP- :55.41 (-0.19 ) eS :09.31 (-0.23 ) TVA LAL 165.9 272 eP- :08:03.11 (-0.08 ) eS :22.86 ( 0.19 ) TVA ABTN 174.4 343 eP :04.91 ( 0.40 ) eS :25.16 ( 0.21 ) TVA ANTN 200.1 8 eP :08.40 (-0.06 ) S? :32.00 ( 0.22 ) ***** 1989 OCTOBER 27; 07:39 - ALCOA, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891027 073947.4 35.796 84.009 12.2 12 19 110 0.1 B B/B 0.5 28 0.3 1.3 A -.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HPKT 18.6 39 eP 07:39:51.30 ( 0.10 ) iS 07:39:54.00 ( 0.00 ) TVA TKL 26.3 126 eP+ :52.29 (-0.04 ) iS :55.97 ( 0.02 ) TVA ORT 29.5 295 eP :52.91 ( 0.06 ) iS :56.83 (-0.01 ) TVA CRTN 47.3 19 eP- :55.82 ( 0.13 ) eS :40:01.35 (-0.41 ) TVA WMTN 106.5 235 S? :17.67 (-0.11 ) TVA ANTN 117.8 291 eP :40:06.71 ( 0.01 ) S? :20.66 (-0.15 ) TVA ABTN 189.9 274 eS :40.45 ( 0.57 ) TVA FDKY 194.6 305 eP :20.00 ( 1.57X) eS :43.09 ( 1.99X) ***** 1989 NOVEMBER 12; 12:18 - MIDDLESBORO, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891112 121810.3 36.775 83.524 19.6 40 23 195 0.2 C B/D 0.5 -3 0.3 0.6 A 2.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CCVA 23.0 214 iP- 12:18:15.38 (-0.01 ) iS 12:18:19.16 ( 0.07 ) TVA SMTN 53.3 145 iPc :19.72 ( 0.03 ) iS :26.54 ( 0.00 ) TVA CRTN 69.9 204 iPd :21.95 (-0.22 ) iS :30.85 ( 0.03 ) TVA BRTN 74.8 128 iPd :22.68 (-0.26 ) eS :32.33 ( 0.18 ) TVA HPKT 99.5 199 P? :26.20 (-0.48 ) eS :38.35 (-0.27 ) TVA RICH 114.1 146 eP+ :28.64 (-0.33 ) TVA ORT 118.9 216 P? :29.52 (-0.14 ) eS :44.10 ( 0.33 ) TVA TKL 126.0 190 P? :31.00 ( 0.27 ) eS :45.31 (-0.33 ) TVA SLTN 130.8 106 eP :31.65 ( 0.09 ) eS :47.30 ( 0.24 ) TVA GBTN 137.7 207 eP :32.22 (-0.30 ) eS :48.82 ( 0.09 ) TVA BRBC 159.9 136 ePd :36.18 ( 0.10 ) eS :57.74 ( 2.86X) TVA BHT 164.0 232 eP :36.72 ( 0.13 ) eS :56.28 ( 0.50 ) TVA RBNC 164.6 163 ePc :36.66 (-0.12 ) eS :56.30 ( 0.21 ) TVA WSSR 166.2 182 eP :37.14 ( 0.17 ) eS :57.52 ( 1.09X) TVA ANTN 167.1 247 iPd :36.65 (-0.39 ) iS :56.68 ( 0.13 ) TVA GFM 170.6 115 eP :38.16 ( 0.47 ) eS :58.52 ( 0.85 ) TVA TQTN 176.7 218 P? :38.65 ( 0.16 ) S? :59.60 ( 0.55 ) TVA ETT 181.4 208 eP :38.88 (-0.35 ) eS :19:01.50 ( 1.17X) TVA FDKY 202.7 271 P? :43.20 ( 0.72 ) S? :07.20 ( 1.25X) TVA TRYN 203.1 145 eP :42.64 ( 0.03 ) eS :06.24 ( 0.06 ) TVA PLVA 211.4 93 eS :09.16 ( 1.12X) TVA BBG 212.5 187 eP :42.98 (-0.83 ) eS :09.68 ( 1.42X) TVA WMTN 214.0 218 eP :44.22 ( 0.36 ) S? :11.10 ( 2.75X) TVA BENN 214.7 128 eP :44.84 ( 0.82 ) eS :09.52 ( 0.90 ) TVA GMG 236.1 206 eP :48.14 ( 1.47X) eS :15.96 ( 2.76X) TVA ABTN 252.2 248 P? :49.20 ( 0.66 ) iS :20.25 ( 3.81X) TVA RCG 258.9 220 eP :50.82 ( 1.45X) eS :24.28 ( 6.41X) TVA PDTN 267.8 232 P? :52.50 ( 2.06X) S? :24.70 ( 4.98X) TVA HAKY 275.2 279 S? :23.30 ( 2.05X) ***** 1989 NOVEMBER 18; 08:32 - IUKA, MISSISSIPPI ***** VTSO This event is outside SEUSSN monitoring area. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891118 083244.9 34.744 88.286 7.7 10 94 256 0.2 D C/D 2.4 58 0.6 3.7 C 2.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LAL 93.5 111 ePd 08:33:00.65 (-0.12 ) iS 08:33:12.45 ( 0.10 ) TVA MSAL 148.0 85 eP :09.20 ( 0.08 ) eS :26.50 (-0.29 ) TVA TCT 155.0 25 eP :10.35 ( 0.16 ) S? :28.25 (-0.39 ) TVA MOTN 209.7 7 eP :19.55 ( 0.99 ) eS :43.35 ( 0.23 ) TVA ABTN 235.1 57 eP- :22.00 (-0.27 ) eS :49.85 ( 0.32 ) TVA LKGA 258.2 92 P? :26.30 ( 1.16X) TVA HAKY 303.7 30 P? :31.90 ( 1.26X) S? :34:04.55 ( 0.54X) ***** 1989 NOVEMBER 20; 06:04 - BOONEVILLE, INDIANA ***** VTSO This event is outside SEUSSN monitoring area. SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891120 060404.5 38.031 87.375 9.9 10 124 295 0.2 D C/D 1.8 -3 1.0 1.9 B 1.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HAKY 124.2 146 iPd 06:04:24.55 ( 0.08 ) iS 06:04:38.60 (-0.02 ) TVA MOTN 165.9 199 eP- :30.90 (-0.23 ) eS :50.20 ( 0.18 ) TVA FDKY 196.4 134 P? :36.10 ( 0.38 ) eS :57.65 (-0.68 ) TVA TCT 225.4 184 eP :38.80 (-0.49 ) eS :05:04.80 (-0.20 ) TVA ABTN 263.4 154 eP :44.00 ( 0.00 ) eS :14.80 ( 1.47 ) ***** 1989 NOVEMBER 21; 11:04 - MOUNTAIN CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891121 110425.9 36.445 81.776 0.0 8 31 344 0.1 D D/D 15.8 -4 2.8 5.9 D 1.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA SLTN 30.9 270 iP+ 11:04:30.80 (-0.01 ) S? 11:04:34.50 ( 0.17 ) TVA BRTN 98.4 265 eP :41.65 ( 0.03 ) eS :52.50 (-0.30 ) TVA CRTN 187.4 262 eP :56.10 ( 0.25 ) eS :05:19.50 ( 2.36X) TVA ORT 235.1 256 P? :05:03.00 (-0.05 ) S? :32.40 ( 2.20X) TVA ONTN 239.1 272 P? :03.50 (-0.07 ) S? :32.40 ( 1.04 ) ***** 1989 DECEMBER 2; 00:59 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 891202 005941.1 35.764 84.056 14.2 18 18 76 0.2 B B/B 0.4 -32 0.4 0.5 A 1.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA GBTN 17.7 232 iPd 00:59:45.18 ( 0.21 ) iS 00:59:47.80 (-0.01 ) TVA HPKT 24.1 42 eP :46.10 ( 0.24 ) eS :49.40 ( 0.05 ) TVA ORT 27.7 306 iP+ :46.20 (-0.19 ) eS :50.00 (-0.28 ) TVA TKL 28.1 115 eP :46.46 ( 0.01 ) eS :50.08 (-0.30 ) TVA CRTN 52.1 22 P? :50.50 ( 0.29 ) S? :57.10 ( 0.23 ) TVA ETT 60.6 217 eP :51.68 ( 0.17 ) iS :58.88 (-0.24 ) TVA WSSR 69.2 141 eP :53.02 ( 0.13 ) eS 01:00:01.40 (-0.12 ) TVA BHT 80.9 277 eP :48.14 (-6.50X) eS :05.04 ( 0.50 ) TVA BBG 101.2 167 eP :57.94 ( 0.14 ) eS :09.10 (-0.91X) TVA GMG 114.5 209 eP 01:00:00.30 ( 0.48 ) eS :13.08 (-0.42 ) ***** 1989 DECEMBER 2; 13:31 - KNOXVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 891202 133145.6 35.993 83.847 10.9 44 23 46 0.2 C B/C 0.2 -60 0.2 0.5 A 2.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CRTN 22.9 1 iP 13:31:50.20 ( 0.20 ) iS 13:31:53.00 (-0.20 ) TVA TKL 37.8 170 iP :52.44 ( 0.10 ) iS :57.22 (-0.02 ) TVA ORT 42.3 257 iP- :53.26 ( 0.19 ) iS :58.50 (-0.02 ) TVA GBTN 48.9 222 iPd :54.14 (-0.02 ) iS :32:00.28 (-0.12 ) TVA CCVA 69.6 13 eP :57.64 ( 0.08 ) eS :06.26 (-0.03 ) TVA SMTN 73.8 54 eP :57.94 (-0.32 ) TVA ONTN 76.2 315 iP :58.56 (-0.09 ) TVA WSSR 83.0 163 eP :59.56 (-0.19 ) eS :09.46 (-0.62X) TVA ETT 92.2 217 eP :32:00.78 (-0.32 ) eS :12.04 (-0.36 ) TVA RICH 93.1 95 eP+ :01.40 ( 0.13 ) TVA TQTN 95.5 237 eP :01.72 ( 0.15 ) eS :13.00 (-0.21 ) TVA BRTN 96.9 65 eP :01.64 (-0.18 ) TVA BHT 100.4 261 ePd :02.42 ( 0.05 ) eS :14.90 ( 0.29 ) TVA RBNC 105.2 132 ePc :03.12 (-0.07 ) TVA BBG 124.2 178 ePc :05.96 (-0.10 ) eS :20.74 (-0.25 ) TVA ANTN 126.2 279 eP :06.25 (-0.06 ) TVA WMTN 131.3 231 iP :07.35 ( 0.29 ) TVA BRBC 143.8 101 ePc :09.30 ( 0.18 ) eS :27.06 ( 0.78X) TVA GMG 146.0 211 eP- :09.22 (-0.16 ) eS :26.98 ( 0.25 ) TVA SLTN 163.1 72 eP :12.05 ( 0.04 ) eS :31.65 ( 0.37 ) TVA TRYN 165.9 119 ePc :12.78 ( 0.37 ) eS :32.42 ( 0.44 ) TVA RCG 176.9 231 ePc :14.58 ( 0.52 ) eS :38.30 ( 3.47X) TVA GFM 184.3 85 ePc :15.66 ( 0.36 ) eS :37.50 ( 0.53 ) TVA BENN 203.3 103 ePc :18.64 ( 0.51 ) eS :42.76 ( 0.89 ) TVA LKGA 212.0 225 eP :19.50 ( 0.06 ) eS :44.25 ( 0.12 ) TVA PKNC 242.5 88 eP :23.56 (-0.01 ) eS :53.40 ( 2.12X) TVA PLVA 252.5 72 eP :24.34 (-0.53 ) TVA HAKY 274.5 298 P? :28.25 ( 0.85 ) TVA MSAL 286.4 244 eP :29.60 ( 0.73 ) ***** 1989 DECEMBER 2; 18:02 - MIDDLESBORO, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891202 180228.1 36.579 83.911 23.4 14 22 158 0.3 C B/C 0.5 17 0.4 1.3 A 2.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CCVA 22.0 83 iPd 18:02:33.56 ( 0.08 ) iS 18:02:37.42 ( 0.04 ) TVA CRTN 42.5 171 iP :36.10 (-0.01 ) iS :41.45 (-0.48 ) TVA ONTN 48.9 257 iPd :36.90 (-0.13 ) eS :43.60 ( 0.09 ) TVA SMTN 68.9 108 eP+ :40.14 ( 0.15 ) eS :49.06 ( 0.43 ) TVA HPKT 72.5 178 eP :40.20 (-0.29 ) iS :49.20 (-0.30 ) TVA ORT 82.3 206 eP :42.05 ( 0.08 ) iS :52.70 ( 0.64 ) TVA BRTN 96.7 104 eP- :44.30 ( 0.13X) S? :56.00 ( 0.13X) TVA TKL 102.9 173 iPc :44.90 (-0.19X) TVA GBTN 104.8 195 iPd :45.28 (-0.10X) eS :58.72 ( 0.76X) TVA RICH 122.5 126 ePc :47.96 (-0.16X) TVA BHT 123.5 229 eP :47.92 (-0.34X) eS :03:03.66 ( 0.72X) TVA ANTN 126.8 250 eP :48.00 (-0.75X) TVA TQTN 138.9 212 eP :50.75 ( 0.19X) eS :07.90 ( 0.97X) TVA ETT 147.4 200 eP :51.80 (-0.09X) eS :09.96 ( 0.74X) TVA WSSR 147.4 168 eP+ :51.84 (-0.12X) eS :10.20 ( 0.86X) TVA RBNC 159.2 148 iPc :53.84 ( 0.04X) eS :12.90 ( 0.38X) TVA SLTN 161.1 95 eP :54.20 ( 0.16X) S? :13.90 ( 0.97X) TVA FDKY 169.9 278 iP :54.85 (-0.46 ) TVA BRBC 173.4 122 eP :56.00 ( 0.01X) eS :16.76 ( 0.44X) TVA WMTN 176.1 213 iPc :56.10 (-0.16X) S? :17.75 ( 0.97X) TVA BBG 189.4 177 eP :57.96 (-0.42X) TVA GFM 195.9 105 eP- :59.34 ( 0.04X) eS :22.54 ( 0.51X) TVA GMG 202.4 200 eP :59.30 (-0.72X) eS :23.56 ( 0.28X) TVA TRYN 209.2 134 eP :03:00.80 (-0.02X) eS :25.06 ( 0.39X) TVA ABTN 212.1 249 iP+ :01.10 ( 0.00X) iS :26.45 ( 1.30X) TVA RCG 220.3 217 eP :02.58 ( 0.45X) eS :29.44 ( 2.51X) TVA BENN 231.8 118 eP :04.64 ( 1.06X) TVA HAKY 245.6 285 P? :06.20 ( 1.03 ) S? :34.15 ( 1.95X) TVA LKGA 259.0 214 P? :09.30 ( 2.42X) S? :40.10 ( 4.95X) ***** 1989 DECEMBER 9; 20:24 - CEDARTOWN, GEORGIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 891209 202456.7 34.233 85.487 10.6 9 43 256 0.2 D C/D 2.0 -40 1.3 2.0 B 1.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LKGA 43.3 2 eP 20:25:04.43 ( 0.08 ) eS 20:25:09.88 (-0.05 ) TVA WMTN 122.0 23 eP :17.00 ( 0.24 ) eS :31.08 (-0.31 ) TVA MSAL 128.4 302 P? :17.58 (-0.15 ) S? :32.88 (-0.20 ) TVA LAL 171.8 278 eP :22.65 (-1.72X) eS :44.63 ( 0.07 ) TVA ABTN 191.9 343 eP :26.98 (-0.48 ) eS :50.13 ( 0.23 ) ***** 1989 DECEMBER 12; 14:06 - ROCKWOOD, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 891212 140622.1 35.771 84.749 14.4 10 28 107 0.1 B B/B 0.9 2 0.4 1.5 B 0.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TQTN 28.4 176 iP+ 14:06:27.45 (-0.06 ) iS 14:06:31.51 ( 0.04 ) TVA ORT 43.0 69 iP :29.66 (-0.14 ) iS :35.46 ( 0.04 ) TVA WMTN 61.5 199 P? :32.41 (-0.22 ) eS :40.26 (-0.07 ) TVA ANTN 62.2 316 P? :32.42 (-0.34 ) eS :40.61 ( 0.05 ) TVA ONTN 83.5 19 P? :35.95 (-0.08 ) S? :45.65 (-0.55X) TVA ABTN 123.6 276 S? :57.25 ( 0.48 ) ***** 1989 DECEMBER 15; 08:47 - KNOXVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 891215 084744.5 35.985 83.876 4.4 12 7 158 0.1 C B/C 0.7 -81 0.2 0.5 A 1.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HPKT 6.5 182 iP 08:47:45.95 (-0.03 ) iS 08:47:47.05 ( 0.02 ) TVA CRTN 24.1 8 iP :49.00 ( 0.09 ) iS :52.00 (-0.09 ) TVA TKL 37.4 166 eP :51.24 ( 0.03 ) eS :56.00 (-0.08 ) TVA ORT 39.6 258 eP :51.60 ( 0.03 ) eS :56.55 (-0.15 ) TVA GBTN 46.5 221 iP- :52.92 ( 0.20 ) iS :58.56 (-0.12 ) TVA SMTN 76.4 55 eP :58.88 ( 1.19X) TVA GMG 143.9 210 eP :48:07.96 (-0.47 ) eS :48:26.26 ( 0.39 ) ***** 1989 DECEMBER 29; 12:51 - JEFFERSON CITY, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 891229 125112.7 36.255 83.715 12.2 23 39 142 0.2 C B/C 0.6 -30 0.4 1.2 A 1.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HPKT 39.4 202 eP 12:51:19.60 (-0.16 ) S? 12:51:25.25 ( 0.36 ) TVA SMTN 49.9 73 iPd :21.52 ( 0.04 ) eS :27.86 (-0.02 ) TVA ORT 65.5 234 eP :24.73 ( 0.70X) eS :32.60 ( 0.32 ) TVA TKL 66.4 185 iPc :24.18 ( 0.02 ) iS :32.53 ( 0.02 ) TVA ONTN 70.1 291 eP :24.43 (-0.32 ) eS :33.33 (-0.19 ) TVA BRTN 76.9 81 P? :25.70 (-0.09 ) S? :35.35 ( 0.02 ) TVA GBTN 79.2 215 iPd :26.04 (-0.07 ) iS :35.74 (-0.15 ) TVA WSSR 109.1 173 iPd :30.84 ( 0.06 ) TVA TQTN 122.7 228 S? :47.50 ( 0.09 ) TVA ETT 122.9 213 eP :32.98 ( 0.15 ) eS :47.46 (-0.04 ) TVA ANTN 136.7 267 eP :34.50 (-0.45 ) eS :51.75 ( 0.58 ) TVA BBG 153.4 183 eP :37.54 (-0.04 ) eS :56.00 ( 0.28 ) TVA WMTN 159.5 226 S? :58.18 ( 1.01X) TVA GFM 172.3 95 eS :52:02.38 ( 1.60X) TVA GMG 177.1 210 eS :02.68 ( 0.74 ) TVA ABTN 219.6 260 S? :13.85 ( 0.77 ) Addenda III Following are event locations and magnitudes submitted by the Tennessee Valley Authority for all of 1990. ***** 1990 JANUARY 3; 04:25 - TAZEWELL, VIRGINIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900103 042514.6 37.087 81.761 2.9 42 69 160 0.4 D C/D 1.3 4 0.6 1.4 B 2.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA PWV 68.9 66 S-P 8.95 SEC ( 0.19 ) TVA WMV 70.3 88 S-P 10.01 SEC ( 1.07X) TVA PLVA 71.0 131 eP 04:25:26.76 (-0.20 ) eS 04:25:36.54 ( 0.54 ) TVA SLTN 78.3 204 iP :28.00 (-0.16 ) iS :37.10 (-0.98X) TVA PUV 84.3 94 S-P 9.96 SEC (-0.65 ) TVA NAV 89.6 73 S-P 10.69 SEC (-0.56 ) TVA HWV 98.9 55 S-P 12.72 SEC ( 0.36 ) TVA GFM 108.4 182 eP :32.98 (-0.18 ) eS :45.62 (-1.10X) TVA BLA 119.8 83 S-P 13.80 SEC (-1.02X) TVA PKNC 127.5 155 eP :35.78 (-0.28 ) eS :52.94 ( 1.20X) TVA BRTN 127.8 231 eP :35.75 (-0.35 ) S? :50.22 (-1.59X) TVA VWV 128.5 70 S-P 16.45 SEC ( 0.64 ) TVA SMTN 149.1 239 eP :39.44 ( 0.07 ) eS :26:01.32 ( 3.86X) TVA BRBC 156.8 198 eP :42.20 ( 1.54X) eS :03.56 ( 3.86X) TVA RICH 160.5 216 eP :41.30 ( 0.16 ) eS :25:59.70 (-0.83 ) TVA BENN 169.1 177 eP :43.12 ( 0.68 ) eS :26:05.66 ( 2.88X) TVA CCVA 178.3 253 eP :43.62 (-0.20 ) eS :07.18 ( 2.01X) TVA TRYN 206.6 192 eP :48.40 ( 0.21 ) eS :13.50 ( 0.78 ) TVA CRTN 210.4 243 iP :48.80 ( 0.07 ) iS :13.80 ( 0.13 ) TVA RBNC 221.3 210 eP :50.46 (-0.06 ) eS :16.12 (-0.64 ) TVA HPKT 229.3 236 P? :51.50 (-0.11 ) eS :18.75 ( 0.10 ) TVA TKL 240.3 229 eP :52.70 (-0.46 ) S? :20.30 (-1.02 ) TVA ONTN 248.7 255 eP :53.80 (-0.41 ) S? :24.15 ( 1.00 ) TVA WSSR 258.8 220 eP :55.10 (-0.45 ) eS :25.32 (-0.13 ) TVA ORT 262.7 241 P? :56.60 ( 0.71 ) S? :25.30 (-0.75 ) TVA GBTN 270.5 235 eP :56.24 (-0.60 ) eS :27.10 (-0.59 ) TVA BBG 307.3 218 eP :26:01.24 (-0.24 ) eS :40.20 ( 4.49X) TVA ETT 311.2 232 eP :03.18 ( 1.33 ) eS :40.92 ( 4.56X) TVA TQTN 318.2 238 P? :04.00 ( 1.33 ) S? :38.00 ( 0.22 ) TVA ANTN 326.6 253 P? :06.15 ( 2.42X) S? :45.10 ( 5.48X) TVA WMTN 353.7 236 P? :05.25 (-1.77 ) S? :43.00 (-2.31 ) TVA ABTN 411.7 252 P? :15.90 ( 1.79 ) S? :27:01.15 ( 3.58X) TVA LKGA 432.5 232 P? :25.50 ( 8.82X) S? :01.50 (-0.52 ) ***** 1990 JANUARY 19; 17:36 - DALTON, GEORGIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900119 173652.7 34.956 84.907 10.8 40 33 140 0.2 C B/C 0.4 -8 0.2 0.5 A 2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA WMTN 32.9 349 iP 17:36:58.80 ( 0.13 ) iS 17:37:02.00 (-1.01X) TVA RCG 40.4 273 iP+ :59.94 ( 0.07 ) eS :04.96 (-0.12 ) TVA ETT 58.1 45 iPd :37:02.66 (-0.13 ) eS :10.18 ( 0.04 ) TVA LKGA 63.6 235 iP- :03.75 ( 0.06 ) iS :13.50 ( 1.81X) TVA TQTN 64.3 15 eP :03.50 (-0.27 ) TVA PDTN 92.9 293 iP :08.10 (-0.19 ) iS :19.30 (-0.36 ) TVA BHT 98.9 358 eP :09.48 ( 0.22 ) eS :21.48 ( 0.15 ) TVA BBG 100.5 95 eP :09.70 ( 0.14 ) eS :21.26 (-0.59 ) TVA ORT 119.1 27 eP :12.32 ( 0.01 ) TVA WSSR 126.3 73 iPd :13.72 ( 0.22 ) eS :28.46 (-0.21 ) TVA TKL 129.1 53 eP :13.69 (-0.16 ) eS :29.20 (-0.07 ) TVA ANTN 138.0 348 iP :15.30 ( 0.06 ) iS :31.70 ( 0.03 ) TVA ABTN 150.2 314 iP :17.30 ( 0.23 ) iS :35.20 ( 0.35 ) TVA MSAL 161.9 266 eP :18.70 (-0.16 ) eS :38.12 ( 0.17 ) TVA CRTN 168.5 35 iP :20.00 ( 0.12 ) iS :38.00 (-1.71X) TVA LMTN 170.7 52 eP :20.00 (-0.24 ) iS :40.00 (-0.33 ) TVA ONTN 174.4 14 eP :20.60 (-0.20 ) eS :41.20 (-0.10 ) TVA RBNC 180.6 75 eP :22.16 ( 0.30 ) eS :43.30 ( 0.17 ) TVA CCVA 214.4 31 eP :25.52 (-1.40X) eS :46.34 (-5.54X) TVA RICH 217.6 60 eP :28.28 ( 0.83 ) eS :54.62 ( 1.81X) TVA SMTN 222.3 44 eP :27.42 (-0.73 ) eS :55.60 ( 1.59X) TVA LAL 230.0 256 iP :29.45 ( 0.34 ) TVA TRYN 245.0 81 eP :32.76 ( 1.74X) eS :38:01.22 ( 2.25X) TVA BRBC 253.6 69 eP :33.30 ( 1.10 ) eS :01.98 ( 0.96 ) TVA TCT 266.8 297 eP :34.20 ( 0.60 ) TVA HAKY 282.4 328 eP :36.35 ( 0.85 ) eS :09.47 ( 2.75X) TVA PWLA 288.3 271 eP :37.22 ( 1.00 ) eS :11.36 ( 3.38X) TVA BENN 303.0 76 eP :41.72 ( 3.62X) eS :16.42 ( 5.20X) TVA GFM 308.9 65 eP :42.04 ( 3.10X) eS :14.64 ( 1.97X) TVA PKNC 361.0 69 eP :51.58 ( 6.40X) eS :33.50 TVA PLVA 388.1 60 eP :48.76 ( 0.19 ) ***** 1990 JANUARY 24; 18:20 - BRANDENBURG, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900124 182025.4 38.117 86.454 5.4 58 111 194 0.3 D C/D 0.9 22 0.4 0.7 A 3.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA WDIN 110.7 269 iPd 18:20:43.59 ( 0.46 ) TVA HAKY 112.8 186 iP :43.42 (-0.04 ) TVA NHIL 152.2 263 iPd :49.94 ( 0.17 ) eS 18:21:09.00 ( 1.93X) TVA BPIL 187.6 274 ePd :54.97 (-0.46 ) eS :16.54 (-0.21 ) TVA CSIL 212.5 256 iPd :58.45 (-0.56 ) eS :22.77 (-0.77 ) TVA MOTN 214.7 220 iP :59.35 ( 0.06 ) TVA ANTN 241.6 153 iPc :21:02.40 (-0.25 ) TVA ABTN 249.5 173 iPc :04.10 ( 0.50 ) TVA TCT 253.8 203 iP :04.15 ( 0.03 ) TVA ONTN 254.4 135 iPc :03.95 (-0.27 ) TVA BHT 285.4 151 eP :07.82 (-0.26 ) eS :42.60 ( 2.79X) TVA CCVA 298.6 123 ePc :09.96 ( 0.29 ) eS :45.24 ( 2.60X) TVA UTM 299.7 228 eP- :10.04 ( 0.28 ) eS :45.18 ( 2.38X) TVA ORT 310.7 141 eP :11.20 ( 0.05 ) TVA CRTN 314.8 132 iP :11.90 ( 0.24 ) iS :48.70 ( 2.54X) TVA PDTN 320.1 170 iP- :12.50 ( 0.20 ) iS :51.60 ( 4.31X) TVA ACTN 320.6 233 ePd :12.30 (-0.04 ) TVA MILT 323.2 220 eP- :13.10 ( 0.43 ) eS :49.62 ( 1.68 ) TVA DON 324.3 252 ePc :13.02 ( 0.22 ) TVA TQTN 327.2 151 eP :13.40 ( 0.24 ) TVA OGTN 328.3 236 eP :13.10 (-0.18 ) TVA BBTN 328.3 235 eP :13.31 ( 0.02 ) TVA NRMO 331.4 238 eP :13.58 (-0.08 ) TVA GRT 334.1 233 eP :14.12 ( 0.12 ) TVA DRTN 339.3 231 eP+ :14.68 ( 0.03 ) TVA MFTN 339.5 231 eP :14.48 (-0.19 ) TVA WMTN 344.7 157 eP :15.35 ( 0.01 ) iS :55.20 ( 2.53X) TVA CBMO 347.0 236 eP :15.68 ( 0.09 ) TVA SMTN 348.3 123 eP :16.42 ( 0.60 ) TVA FVMZ 348.8 269 iPd :16.28 ( 0.47 ) TVA CCMO 356.8 282 TVA ETT 357.4 149 eP :17.28 ( 0.35 ) eS :56.12 ( 0.64 ) TVA RCG 362.4 164 eP+ :17.36 (-0.17 ) TVA TKL 362.6 138 eP :17.35 (-0.19 ) iS :22:01.00 ( 4.43X) TVA MSAL 363.3 183 iPd :17.65 ( 0.02 ) TVA LMTN 366.9 131 iP :17.95 (-0.15 ) TVA BRTN 373.3 120 eP :18.80 (-0.09 ) TVA PWLA 376.7 203 ePc :18.68 (-0.58 ) TVA ECD 384.8 235 eP :20.21 (-0.05 ) TVA LKGA 397.5 167 ePd :21.85 (-0.02 ) iS :06.45 ( 2.22X) TVA RICH 405.0 126 eP :27.38 ( 4.54X) TVA LAL 415.9 191 iP :23.35 (-0.77 ) TVA EBZ 419.6 219 eP+ :24.00 (-0.56 ) TVA BBG 430.7 146 ePd :25.76 (-0.28 ) eS :11.22 (-0.37 ) TVA RBNC 435.5 134 eP :32.08 ( 5.40X) TVA SFTN 441.6 227 eP+ :26.82 (-0.43 ) TVA BRBC 455.4 124 eP :35.34 ( 6.18X) TVA GFM 469.1 117 eP :39.26 ( 8.45X) TVA POW 473.2 244 eP :31.39 ( 0.23 ) TVA TRYN 491.2 129 eP :32.98 (-0.48 ) TVA PLVA 495.5 107 eP :34.68 ( 0.65 ) eS :25.56 (-0.18 ) TVA WLA 500.9 231 eP :33.56 (-1.01 ) TVA AFA 501.9 246 ePd :34.70 (-0.01 ) TVA BENN 512.6 122 eP :44.92 ( 8.82X) TVA PGM 521.7 220 eP :36.76 (-0.37 ) TVA PKNC 523.8 114 eP :47.06 ( 9.59X) TVA OLY 533.2 239 eP :38.02 (-0.55 ) TVA LGAR 538.3 226 eP :38.88 (-0.30 ) TVA HOGG 608.7 240 eP- :47.32 (-0.55 ) ***** 1990 JANUARY 27; 14:05 - BRANDENBURG, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900127 140551.2 38.104 86.440 3.6 43 112 215 0.3 D C/D 1.6 1 0.5 1.2 B 3.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HAKY 111.5 187 iP 14:06:09.30 ( 0.21 ) TVA FDKY 156.6 158 iP :16.20 (-0.10 ) TVA MOTN 214.4 220 iP :25.05 (-0.23 ) TVA ANTN 239.8 153 iP :28.25 (-0.20 ) TVA ABTN 247.9 173 iP :29.80 ( 0.37 ) TVA ONTN 252.5 135 iPd :29.50 (-0.52 ) TVA TCT 253.0 203 iP :30.05 ( 0.00 ) TVA BHT 283.6 152 eP :33.66 (-0.22 ) eS 14:07:07.70 ( 2.16X) TVA CCVA 296.8 123 ePc :35.84 ( 0.37 ) TVA UTM 299.7 229 eP+ :36.20 ( 0.41 ) TVA ORT 308.8 141 iPd :37.00 ( 0.06 ) TVA CRTN 312.9 132 iPd :37.70 ( 0.24 ) iS :15.50 ( 3.61X) TVA PDTN 318.5 170 iPd :38.25 ( 0.12 ) TVA MILT 323.0 220 ePc :39.22 ( 0.56 ) eS :15.36 ( 1.34 ) TVA DON 325.1 253 ePc :38.84 (-0.08 ) TVA TQTN 325.3 151 eP :39.20 ( 0.24 ) TVA GBTN 335.6 143 ePc :40.30 ( 0.06 ) TVA DRTN 339.4 231 eP :41.02 ( 0.33 ) TVA WMTN 342.9 157 iPd :41.15 ( 0.00 ) iS :21.30 ( 2.88X) TVA SMTN 346.4 122 eP :41.60 (-0.02 ) TVA ETT 355.6 149 eP :42.80 ( 0.07 ) TVA RCG 360.7 164 eP :43.20 (-0.14 ) TVA TKL 360.7 138 eP :43.00 (-0.34 ) TVA MSAL 362.0 183 iP :43.40 (-0.09 ) TVA LMTN 365.0 131 eP :44.50 ( 0.61 ) TVA BRTN 371.5 120 eP :44.60 (-0.10 ) TVA PWLA 375.9 203 ePc :44.48 (-0.71 ) TVA LKGA 395.8 167 iP :47.75 ( 0.05 ) iS :34.00 ( 3.99X) TVA LAL 414.8 191 iP :49.30 (-0.70 ) TVA EBZ 419.4 219 eP :49.12 (-1.43 ) TVA BBG 428.8 146 eP :51.56 (-0.27 ) eS :36.94 (-0.38 ) TVA RBNC 433.6 134 eP :52.62 ( 0.15 ) TVA LRDO 446.6 239 eP :07:00.58 ( 6.68X) TVA BRBC 453.6 124 eP- :06:54.38 (-0.58 ) TVA GFM 467.3 117 eP :56.06 (-0.56 ) TVA TRYN 489.3 129 eP :58.96 (-0.30 ) TVA PLVA 493.9 107 eP :59.64 (-0.22 ) TVA AFA 502.5 246 ePd :07:00.50 (-0.31 ) TVA BENN 510.8 122 eP :00.76 (-1.14 ) TVA PKNC 522.1 114 eP :03.06 (-0.22 ) TVA OLY 533.5 239 eP :04.04 (-0.60 ) TVA HOGG 609.1 240 eP :12.78 (-1.17 ) ***** 1990 JANUARY 28; 11:38 - COPPERHILL, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900128 113823.5 35.230 84.296 6.7 9 18 141 0.1 C C/C 1.5 26 1.1 8.1 D 0.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 18.0 307 iPc 11:38:26.98 ( 0.10 ) iS 11:38:29.30 (-0.06 ) TVA GBTN 49.1 9 eS :38.14 (-0.04 ) TVA TQTN 50.4 309 S? :38.50 (-0.05 ) TVA BBG 59.3 132 eP :33.60 (-0.13 ) TVA WMTN 61.7 272 S? :41.35 (-0.44 ) TVA WSSR 65.6 85 eP :34.94 ( 0.17 ) eS :42.48 (-0.53 ) TVA TKL 67.1 45 eS :43.42 ( 0.07 ) ***** 1990 JANUARY 29; 19:41 - BRANDENBURG, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900129 194146.5 38.109 86.437 0.0 10 157 224 0.2 D C/D 2.0 13 0.7 1.7 B 3.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA FDKY 157.0 159 iP 19:42:12.65 (-0.03 ) TVA MOTN 215.0 220 iP :21.55 ( 0.00 ) TVA ANTN 240.1 153 iP :25.20 (-0.22 ) TVA ABTN 248.4 173 iP :26.62 ( 0.22 ) TVA ONTN 252.6 135 eP :26.40 (-0.56 ) S? 19:42:56.55 ( 0.04 ) TVA TCT 253.6 203 iP :26.65 (-0.38X) S? :58.00 ( 1.37X) TVA BHT 283.9 152 iPc :31.60 ( 0.79X) eS :43:06.26 ( 3.09X) TVA CCVA 296.8 123 eP :32.82 ( 0.47 ) eS :07.46 ( 1.62X) TVA UTM 300.2 229 iPd :32.76 ( 0.05 ) eS :09.94 ( 3.48X) TVA ORT 309.1 141 P? :34.52 ( 0.70X) S? :10.35 ( 1.96X) TVA CRTN 313.1 132 P? :34.80 ( 0.47X) S? :17.20 ( 7.94X) TVA PDTN 318.9 170 eP :35.08 ( 0.06X) S? :14.10 ( 3.64X) TVA MILT 323.5 220 iP- :35.66 ( 0.10X) eS :13.36 ( 1.97X) TVA DON 325.4 253 iP+ :35.62 (-0.18 ) eS :17.34 ( 5.54X) TVA TQTN 325.6 152 P? :36.68 ( 0.85X) S? :14.70 ( 2.83X) TVA GBTN 335.9 143 eP :36.94 (-0.15X) eS :15.60 ( 1.56X) TVA DRTN 339.9 231 eP :44.20 ( 6.64X) eS :20.64 ( 5.78X) TVA WMTN 343.3 157 P? :38.22 ( 0.21X) S? :16.70 ( 1.08X) TVA SMTN 346.5 123 eP :41.48 ( 3.03X) eS :22.70 ( 6.31X) TVA ETT 355.9 150 eP :40.08 ( 0.51X) eS :20.14 ( 1.81X) TVA TKL 360.9 138 P? :43.05 ( 2.89X) TVA RCG 361.1 164 eP :40.84 ( 0.65X) eS :20.34 ( 0.93X) TVA MSAL 362.5 183 eP :40.25 (-0.09X) TVA LMTN 365.2 132 P? :42.95 ( 2.24X) TVA BRTN 371.6 120 P? :42.60 ( 1.11X) TVA PWLA 376.4 203 eP :40.96 (-1.08X) eS :32.50 ( 9.90X) TVA LKGA 396.2 167 P? :44.68 ( 0.16X) TVA RICH 403.3 126 eS :31.38 ( 2.94X) TVA LAL 415.3 191 eP :45.85 (-0.96X) S? :31.60 ( 0.75X) TVA EBZ 419.9 219 TVA BBG 429.1 146 eP :48.14 (-0.48X) eS :33.58 (-0.40X) TVA RBNC 433.8 134 eP :56.24 ( 6.99X) eS :36.22 ( 1.14X) TVA GFM 467.3 117 eP :43:02.08 ( 8.74X) eS :42.48 ( 0.33 ) TVA PLVA 493.8 107 eP :04.20 ( 7.67X) TVA PKNC 522.1 114 eP :09.48 ( 9.56X) ***** 1990 FEBRUARY 2; 11:14 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900202 111435.8 35.662 84.263 14.1 32 5 48 0.2 B B/A 0.3 -42 0.3 0.3 A 2.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA GBTN 4.8 84 iPc 11:14:38.50 ( 0.14 ) iS 11:14:40.28 ( 0.02 ) TVA ORT 27.8 352 eP :41.15 ( 0.05 ) S? :44.80 (-0.18 ) TVA ETT 41.1 205 iPd :43.14 (-0.04 ) iS :48.40 (-0.19 ) TVA TKL 44.3 90 eP :43.22 (-0.45 ) eS :49.25 (-0.19 ) TVA TQTN 44.9 249 eP :43.87 ( 0.10 ) eS :49.40 (-0.20 ) TVA BHT 65.0 289 eP :46.98 ( 0.07 ) eS :55.08 ( 0.04 ) TVA CRTN 70.9 32 eP :47.60 (-0.18 ) S? :57.05 ( 0.51 ) TVA WSSR 75.3 124 iPc :48.82 ( 0.28 ) eS :57.92 ( 0.06 ) TVA WMTN 79.1 235 eP :49.30 ( 0.27 ) eS :58.67 (-0.03 ) TVA LMTN 81.1 72 eP :49.32 (-0.04 ) eS :58.77 (-0.50 ) TVA ONTN 92.4 350 P? :50.85 (-0.24 ) eS :15:01.98 (-0.29 ) TVA GMG 96.0 203 eP+ :51.74 ( 0.05 ) eS :03.10 (-0.20 ) TVA BBG 96.6 155 eP :51.98 ( 0.19 ) eS :02.22 (-1.26X) TVA ANTN 104.1 303 eP :52.77 (-0.11 ) S? :05.85 ( 0.48 ) TVA RBNC 120.7 106 eP- :55.80 ( 0.27 ) TVA RCG 124.6 233 eP :56.66 ( 0.66X) TVA SMTN 126.1 50 eP :56.74 ( 0.49 ) eS :09.64 (-1.56X) TVA BRTN 147.6 58 S? :17.90 ( 1.02X) TVA LKGA 159.4 224 S? :21.40 ( 1.39X) TVA ABTN 168.7 279 eP :15:02.97 ( 0.22 ) eS :23.37 ( 0.92X) TVA BRBC 179.2 87 eP :03.02 (-1.47X) eS :24.50 (-0.96X) TVA FDKY 186.1 313 P? :05.75 ( 0.35 ) S? :28.10 ( 1.06X) TVA TRYN 188.3 103 eP :04.78 (-1.01X) eS :26.84 (-0.87 ) ***** 1990 FEBRUARY 5; 20:59 - NEWPORT, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 900205 205954.4 35.917 83.162 4.1 20 23 109 0.2 C B/C 0.5 -5 0.3 0.9 A 1.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LMTN 22.6 262 iP 20:59:58.60 ( 0.13 ) TVA RICH 31.0 89 iPc :59.68 (-0.25 ) eS 21:00:04.24 ( 0.24 ) TVA SMTN 51.7 358 eP 21:00:02.50 (-0.92X) TVA BRTN 55.5 28 eP :03.85 (-0.20 ) eS :11.15 ( 0.02 ) TVA TKL 62.3 243 eP :04.92 (-0.24 ) S? :13.52 ( 0.47 ) TVA RBNC 64.1 166 iPc :05.72 ( 0.17 ) iS :13.72 ( 0.00 ) TVA CRTN 68.8 297 P? :07.10 ( 0.87X) S? :15.50 ( 0.60X) TVA WSSR 80.3 208 eP :07.96 (-0.23 ) TVA BRBC 81.6 104 eP :09.22 ( 0.78X) TVA GBTN 98.8 254 eP :10.66 (-0.53 ) eS :26.88 ( 3.40X) TVA TRYN 109.9 131 eP :14.96 ( 1.90X) eS :33.00 ( 6.30X) TVA SLTN 110.4 58 P? :14.92 ( 1.76X) S? :26.82 (-0.06 ) TVA GFM 124.0 80 eP :15.40 ( 0.12 ) eS :35.28 ( 4.72X) TVA BBG 129.8 207 eP :16.72 ( 0.58 ) TVA ONTN 131.2 299 P? :17.15 ( 0.87X) TVA ETT 134.2 241 eP :17.08 ( 0.33 ) eS :38.02 ( 4.93X) TVA BENN 141.3 106 eP :20.52 ( 2.67X) eS :40.34 ( 5.35X) TVA TQTN 148.3 253 P? :21.69 ( 2.81X) TVA BHT 161.2 268 eP :22.00 ( 1.10X) eS :43.22 ( 2.95X) TVA WMTN 180.2 246 P? :25.82 ( 2.06X) eS :49.55 ( 4.33X) TVA GMG 180.2 230 eP :23.98 ( 0.16 ) TVA PKNC 181.3 85 eP :24.56 ( 0.59 ) eS :49.00 ( 3.41X) TVA ANTN 188.6 279 P? :25.42 ( 0.34 ) TVA PLVA 198.1 65 eP :27.02 ( 0.43 ) eS :52.62 ( 2.50X) TVA ABTN 266.1 270 P? :36.10 ( 0.17 ) eS :01:07.95 ( 1.68X) ***** 1990 FEBRUARY 10; 23:42 - ANDREWS, NORTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900210 234207.9 35.275 84.067 6.4 49 36 78 0.3 C C/C 0.3 41 0.2 0.8 A 2.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 35.7 279 iPd 23:42:14.50 ( 0.33 ) iS 23:42:18.82 ( 0.04 ) TVA WSSR 44.5 89 eP :16.28 ( 0.61X) eS :21.30 (-0.07 ) TVA GBTN 45.3 343 iPc :15.98 ( 0.24 ) eS :21.46 (-0.03 ) TVA TKL 50.1 32 iP :16.40 (-0.13 ) S? :22.37 (-0.49 ) TVA BBG 50.2 152 iPc :16.82 ( 0.21 ) iS :22.66 (-0.34 ) TVA TQTN 65.6 294 P? :18.70 (-0.37 ) S? :26.18 (-1.07X) TVA GMG 71.5 230 eP :19.92 (-0.21 ) eS :29.18 ( 0.09 ) TVA ORT 73.6 343 iP :20.60 ( 0.17 ) iS :29.40 (-0.20 ) TVA WMTN 82.5 268 P? :22.30 ( 0.41 ) S? :31.15 (-0.99X) TVA LMTN 90.3 41 eP :22.70 (-0.50 ) TVA RBNC 98.7 84 eP :24.72 ( 0.05 ) eS :35.98 (-0.96X) TVA CRTN 104.6 11 P? :25.30 (-0.22 ) S? :38.25 (-0.16 ) TVA RCG 121.4 254 eP :27.80 (-0.28 ) eS :41.76 (-1.08X) TVA RICH 133.8 57 iPd :30.24 ( 0.21 ) eS :47.74 ( 1.53X) TVA ONTN 138.1 346 P? :30.35 (-0.31 ) S? :46.61 (-0.69 ) TVA ANTN 144.9 314 eP :31.40 (-0.29 ) TVA SMTN 146.6 33 eP :31.80 (-0.16 ) eS :49.98 ( 0.42 ) TVA LKGA 147.3 241 P? :31.72 (-0.34 ) S? :49.77 ( 0.04 ) TVA CCVA 151.7 14 eP :34.18 ( 1.45X) eS :50.20 (-0.69 ) TVA BRTN 161.7 42 eP :34.40 ( 0.13 ) S? :53.56 ( 0.01 ) TVA PDTN 162.2 270 P? :34.28 (-0.03 ) S? :52.90 (-0.72 ) TVA TRYN 165.7 90 eP :35.90 ( 0.99X) eS :54.72 ( 0.07 ) TVA BRBC 169.6 72 eP :35.60 ( 0.00 ) eS :56.34 ( 0.50 ) TVA ABTN 197.1 291 P? :40.02 ( 0.36 ) S? :43:02.00 (-0.88 ) TVA BENN 220.9 81 eP :43.54 ( 0.19 ) eS :09.94 ( 0.68 ) TVA GFM 224.6 65 iPc :44.20 ( 0.20 ) eS :11.38 ( 1.00 ) TVA FDKY 229.1 318 eP :44.75 ( 0.19 ) S? :12.31 ( 0.96 ) TVA MSAL 242.5 259 P? :46.30 ( 0.06 ) S? :14.92 ( 0.67 ) TVA PKNC 277.0 71 eP :43:01.20 eS :25.16 ( 3.48X) TVA HAKY 304.2 313 P? :42:56.21 ( 2.43X) S? :31.97 ( 4.67X) TVA PLVA 304.2 59 eP :56.72 ( 2.79X) eS :32.38 ( 4.81X) TVA LAL 313.1 254 P? :55.17 ( 0.28 ) S? :32.45 ( 3.23X) TVA TCT 325.9 285 P :43:00.00 ( 3.56X) S? :30.65 (-1.25 ) TVA MOTN 383.7 294 P? :05.35 ( 1.85 ) S? :48.95 ( 4.83X) ***** 1990 FEBRUARY 14; 10:43 - GATLINBURG, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900214 104338.1 35.580 83.523 10.0 16 24 169 0.2 C B/C 0.5 -74 0.4 1.2 A 1.3 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TKL 24.3 291 P? 10:43:42.81 ( 0.17 ) iS 10:43:46.05 ( 0.10 ) TVA WSSR 33.9 188 iP- :44.44 ( 0.20 ) eS :48.34 (-0.38 ) TVA LMTN 35.5 17 P? :44.53 ( 0.09 ) eS :48.96 (-0.11 ) TVA RBNC 54.7 117 eS :52.10 (-2.55X) TVA GBTN 63.0 279 eP :49.32 ( 0.38 ) iS :56.72 (-0.13 ) TVA CRTN 74.5 337 P? :50.93 ( 0.09 ) S? :44:00.77 ( 0.64X) TVA BBG 82.6 199 eP :52.34 ( 0.10 ) eS :02.56 ( 0.00 ) TVA ETT 89.2 252 iP+ :53.20 ( 0.03 ) eS :03.86 (-0.32 ) TVA SMTN 94.1 19 eS :06.20 ( 0.68 ) TVA GMG 131.3 233 eP :44:00.04 ( 0.37 ) eS :16.14 ( 0.72 ) TVA WMTN 136.8 255 P :00.00 (-0.44X) S? :17.80 ( 1.05X) ***** 1990 FEBRUARY 17; 14:21 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900217 142122.7 35.701 84.212 0.8 19 25 111 0.3 C B/C 0.5 -75 0.3 1.3 B 2.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 24.6 340 eP 14:21:26.86 (-0.26 ) iS 14:21:30.46 ( 0.15 ) TVA TKL 40.0 97 eP :30.26 ( 0.42 ) eS :35.58 ( 0.56 ) TVA ETT 47.0 208 iPd :31.00 (-0.10 ) eS :38.90 ( 1.70X) TVA TQTN 50.8 246 P? :32.10 ( 0.33 ) eS :39.00 ( 0.64 ) TVA CRTN 64.7 31 eP :34.10 (-0.06 ) eS :42.90 ( 0.40 ) TVA LMTN 75.4 74 eP :35.47 (-0.46 ) eS :45.00 (-0.57 ) TVA WMTN 85.4 234 eP :37.58 ( 0.02 ) eS :48.44 ( 0.05 ) TVA ONTN 89.1 347 eP :38.08 (-0.11 ) eS :47.84 (-1.64X) TVA SMTN 119.7 51 eS :55.40 (-2.76X) TVA BRTN 141.4 59 eP :47.32 ( 0.80 ) TVA PDTN 155.9 253 eP :49.20 ( 0.48 ) TVA ABTN 172.7 277 eP :50.54 (-0.75 ) eS :22:15.28 ( 3.15X) TVA FDKY 186.6 311 P? :53.94 ( 0.52 ) eS :15.64 (-0.17 ) ***** 1990 FEBRUARY 17; 16:30 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900217 163032.0 35.716 84.230 1.0 49 23 45 0.4 C C/C 0.2 -20 0.2 0.6 A 2.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 22.5 342 iP 16:30:36.15 ( 0.10 ) TVA TKL 41.8 99 iP :39.72 ( 0.25 ) iS 16:30:45.18 ( 0.29 ) TVA ETT 47.9 205 iPd :40.38 (-0.17 eS :46.74 (-0.02 ) TVA TQTN 50.1 244 eP :40.65 (-0.30 ) S? :47.85 ( 0.39 ) TVA CRTN 64.1 33 P? :43.30 (-0.06 ) S? :51.50 (-0.11 ) TVA LMTN 76.5 75 P? :44.91 (-0.50 ) S? :54.55 (-0.61 ) TVA WSSR 76.5 129 eP- :45.60 ( 0.14 ) eS :55.44 ( 0.18 ) TVA WMTN 85.1 233 P? :46.57 (-0.25 ) S? :57.50 (-0.10 ) TVA ONTN 87.1 347 P? :47.26 ( 0.10 ) TVA BBG 100.9 158 eP :49.40 (-0.09 ) eS :31:01.92 (-0.30 ) TVA GMG 102.8 203 eP :49.10 (-0.69 ) TVA ANTN 103.5 300 P? :49.40 (-0.48 ) eS :02.05 (-0.85 ) TVA CCVA 110.7 27 eS :04.92 (-0.01 ) TVA RBNC 119.6 109 iPd :52.40 (-0.19 ) eS :07.52 (-0.06 ) TVA SMTN 119.9 52 eP :52.96 ( 0.43 ) eS :09.76 ( 2.27X) TVA RICH 129.5 80 eP :54.20 ( 0.18 ) eS :15.64 ( 5.58X) TVA RCG 130.7 231 eP :54.78 ( 0.61 ) TVA BRTN 141.8 60 P? :57.85 ( 1.97X) S? :14.85 ( 1.57X) TVA PDTN 155.0 252 P? :59.87 ( 2.01X) S? :21.63 TVA LKGA 165.8 223 P? :59.20 (-0.36 ) S? :23.20 ( 3.56X) TVA ABTN 170.9 277 P? :31:00.24 (-0.07 ) S? :24.65 ( 3.71X) TVA BRBC 175.9 89 iPd :01.22 ( 0.00 ) eS :24.50 ( 1.99X) TVA FDKY 184.3 311 eP :02.30 (-0.06 ) S? :25.85 ( 1.37 ) TVA TRYN 186.8 105 eP :03.16 ( 0.37 ) eS :28.32 ( 3.09X) TVA GFM 223.0 78 iPd :08.46 ( 0.05 ) eS :36.56 ( 1.60 ) TVA BENN 233.3 93 iPd :09.80 (-0.10 ) eS :38.42 ( 0.88 ) TVA MSAL 242.3 247 P? :10.51 (-0.59 ) S? :40.92 ( 1.31 ) TVA HAKY 261.5 307 P? :14.08 ( 0.64 ) S? :45.55 ( 1.90 ) TVA PKNC 279.8 82 eP :15.46 (-0.29 ) eS :50.78 ( 3.13X) TVA PLVA 295.5 68 eP :16.74 (-1.00 ) eS :54.88 ( 3.78X) TVA TCT 301.8 277 iP :19.10 ( 0.73 ) S? :54.71 ( 2.52 ) TVA LAL 316.9 244 P? :21.60 ( 1.37 ) S? :59.20 ( 3.80X) TVA MOTN 352.5 288 P? :25.03 ( 0.47 ) S? :32:05.30 ( 2.41 ) TVA PWLA 357.9 258 eP :26.20 ( 0.97 ) ***** 1990 FEBRUARY 18; 00:13 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900218 001324.1 35.719 84.212 1.0F 15 23 107 0.3 C C/C 0.6 41 0.4 33.3 D 1.9 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 22.7 338 iP 00:13:28.25 ( 0.10 ) iS 00:13:31.05 (-0.05 ) TVA TKL 40.2 100 eP :31.04 (-0.22 ) eS :36.70 ( 0.22 ) TVA ETT 48.9 207 eP :31.20 (-1.60X) eS :39.60 ( 0.46 ) TVA TQTN 51.7 244 S? :40.18 ( 0.17 ) TVA CRTN 63.0 32 P? :35.42 ( 0.19 ) S? :42.40 (-0.94X) TVA LMTN 74.8 75 eP :36.25 (-0.95X) S? :46.16 (-0.59 ) TVA WMTN 86.6 233 P? :38.65 (-0.48 ) S? :49.52 (-0.58 ) TVA ONTN 87.1 346 P? :39.50 ( 0.27 ) TVA BBG 100.6 159 eS :57.20 ( 2.99X) TVA BRTN 140.3 59 P? :49.71 ( 2.01X) TVA PDTN 156.6 252 P? :49.87 (-0.31 ) eS :14:12.67 ( 3.46X) TVA ABTN 172.5 277 P? :51.75 (-0.86 ) S? :14.50 ( 1.09 ) TVA GFM 221.4 78 eP :59.90 (-0.32 ) eS :28.80 ( 2.21X) ***** 1990 FEBRUARY 23; 17:10 - MADISONVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900223 171044.7 35.528 84.453 14.2 14 22 72 0.3 B B/B 0.3 -76 0.2 0.5 A 2.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 22.4 181 iPc 17:10:49.32 ( 0.10 ) iS 17:10:52.48 (-0.07 ) TVA ORT 44.4 17 iP :52.87 ( 0.28 ) iS :58.00 (-0.38 ) TVA WMTN 56.6 237 iPd :54.37 (-0.09 ) iS :11:01.12 (-0.50 ) TVA BHT 57.0 309 ePc :54.94 ( 0.38 ) eS :02.12 ( 0.33 ) TVA TKL 63.2 77 eP :55.62 ( 0.15 ) eS :02.97 (-0.40 ) TVA GMG 76.4 195 eP+ :57.30 (-0.26X) eS :06.28 (-0.70X) TVA WSSR 84.1 109 iPc :58.98 ( 0.21 ) eS :08.96 (-0.11 ) TVA CRTN 92.8 36 eP :11:00.27 ( 0.24X) iS :11.77 ( 0.52X) TVA BBG 93.1 141 iP :00.26 ( 0.11 ) eS :11.08 (-0.37 ) TVA ANTN 100.3 316 iP :01.37 ( 0.19X) TVA RCG 102.0 233 eP :02.80 ( 1.38X) eS :14.12 ( 0.46X) TVA LMTN 102.4 67 eP :01.42 (-0.09X) iS :13.40 (-0.41X) TVA ONTN 105.9 0 eP :01.92 (-0.11X) S? :14.90 ( 0.18X) TVA PDTN 130.0 258 P? :06.07 ( 0.37X) S? :20.87 (-0.19X) TVA RBNC 134.5 98 eP+ :06.74 ( 0.21X) eS :22.62 ( 0.13X) TVA LKGA 136.8 223 eP :07.57 ( 0.80X) S? :22.02 (-0.89X) TVA CCVA 138.7 30 eP :09.22 ( 2.15X) eS :25.52 ( 2.10X) TVA SMTN 148.8 50 eP :10.82 ( 2.20X) TVA RICH 154.1 73 eP :10.70 ( 1.25X) eS :29.32 ( 1.78X) TVA ABTN 155.1 285 iP :09.89 ( 0.34X) iS :28.60 ( 0.89X) TVA BRTN 170.0 57 eP :12.88 ( 1.02X) S? :33.00 ( 1.28X) TVA FDKY 184.9 320 eP :14.67 ( 0.56X) eS :38.82 ( 3.21X) TVA BRBC 197.6 83 eP+ :16.72 ( 0.51X) eS :40.02 ( 0.78X) TVA TRYN 202.5 98 eP :17.66 ( 0.79X) eS :41.24 ( 0.86X) TVA MSAL 215.9 250 P? :19.55 ( 0.70X) S? :43.85 ( 0.03X) TVA SLTN 233.6 64 P? :21.80 ( 0.58X) S? :50.20 ( 2.29X) TVA GFM 247.7 74 eP :23.44 ( 0.43X) eS :54.04 ( 3.04X) TVA BENN 253.2 88 eS :54.40 ( 2.43X) TVA HAKY 259.5 313 eP :25.12 ( 0.87X) eS :55.52 ( 2.37X) TVA TCT 285.3 282 eP :23.32 (-4.09X) S? :12:02.32 ( 3.69X) TVA LAL 289.8 246 S? :01.77 ( 2.17X) TVA MOTN 340.6 292 P? :38.02 ( 3.86X) eS :13.12 ( 2.82X) ***** 1990 FEBRUARY 23; 17:12 - MADISONVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900223 171253.6 35.502 84.444 18.3 21 20 76 0.3 B B/B 0.6 -11 0.3 1.4 B 2.1 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 19.5 183 iPc 17:12:58.24 ( 0.14 ) iS 17:13:01.36 (-0.03 ) TVA ORT 47.0 15 eP :13:01.87 (-0.06 ) S? :06.37 (-1.66X) TVA WMTN 55.7 240 P? :04.13 ( 0.88X) iS :09.92 (-0.38 ) TVA BHT 59.4 310 eP :03.94 ( 0.08 ) eS :11.10 (-0.27 ) TVA TKL 63.1 74 P? :04.82 ( 0.44 ) eS :12.02 (-0.25 ) TVA GMG 73.8 196 eS :15.10 (-0.10 ) TVA WSSR 82.5 107 eP :07.86 ( 0.44 ) eS :17.36 (-0.16 ) TVA BBG 90.4 140 eP :09.30 ( 0.67X) eS :21.02 ( 1.41X) TVA CRTN 94.7 35 P? :09.32 ( 0.10 ) S? :21.00 ( 0.37 ) TVA LMTN 102.9 65 P? :10.95 ( 0.48 ) eS :22.27 (-0.54 ) TVA ONTN 108.7 0 P? :11.62 ( 0.25 ) S? :23.92 (-0.44 ) TVA PDTN 130.2 259 S? :29.92 (-0.08 ) TVA RICH 154.2 72 eP :19.86 ( 1.51X) eS :38.22 ( 1.79X) TVA ABTN 156.6 286 P? :15.00 (-3.68X) iS :37.47 ( 0.47 ) TVA FDKY 187.7 320 P? :23.70 ( 0.28 ) S? :47.92 ( 2.72X) TVA BRBC 197.2 82 eS :48.30 ( 0.30 ) TVA GFM 247.7 73 eS :14:02.86 ( 3.61X) ***** 1990 MARCH 1; 04:41 - KNOXVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900301 044104.3 36.074 83.708 3.2 16 18 108 0.2 C B/C 0.7 38 0.3 1.3 A 1.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA CRTN 18.4 319 iP 04:41:07.64 ( 0.03 ) iS 04:41:10.01 (-0.02 ) TVA LMTN 34.0 128 eP :10.31 (-0.05 ) eS :14.80 ( 0.01 ) TVA TKL 46.6 187 eP :12.60 ( 0.07 ) eS :18.40 (-0.16 ) TVA BRTN 81.8 67 S? :28.75 ( 0.09 ) TVA RICH 82.0 102 eS :28.40 (-0.36 ) TVA WSSR 89.1 172 eP :20.52 ( 0.89X) eS :31.80 ( 0.96X) TVA ETT 107.1 219 eP :22.94 ( 0.39 ) eS :35.20 (-0.68 ) TVA BBG 133.5 184 eP :27.16 ( 0.46 ) eS :43.22 ( 0.15 ) TVA BRBC 133.6 106 eS :43.16 (-0.04 ) TVA WMTN 146.7 232 P? :28.90 ( 0.26 ) S? :50.03 ( 3.61X) TVA GMG 160.3 213 eS :50.78 ( 0.65 ) TVA ABTN 217.6 265 S? :42:04.35 (-0.83 ) ***** 1990 MARCH 3; 08:58 - NEWPORT, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900303 085828.2 35.979 83.472 0.5 16 12 99 0.2 C B/C 0.5 80 0.3 1.1 A 1.5 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LMTN 11.7 151 iP 08:58:30.19 (-0.09 ) iS 08:58:31.85 ( 0.05 ) TVA CRTN 41.2 306 eP :35.79 ( 0.27 ) eS :41.10 ( 0.23 ) TVA TKL 44.9 218 eP :36.75 ( 0.58 ) S? :41.88 (-0.11 ) TVA SMTN 51.7 30 iS :44.00 (-0.10 ) TVA RICH 59.3 96 eS :44.78 (-1.71X) TVA BRTN 68.6 52 P? :40.49 ( 0.20 ) S? :47.15 (-1.96X) TVA WSSR 78.4 187 iS :52.14 ( 0.15 ) TVA ONTN 103.6 303 S? :58.33 (-0.78X) TVA ETT 114.8 231 eP :48.22 ( 0.29 ) eS :59:02.06 (-0.27 ) TVA BBG 126.4 194 eS :05.66 ( 0.12 ) TVA WMTN 158.4 240 P? :54.70 ( 0.12 ) S? :12.96 (-0.88 ) TVA ANTN 159.9 278 P? :55.15 ( 0.31 ) eS :14.40 ( 0.11 ) ***** 1990 MARCH 3; 22:27 - HENDERSONVILLE, NORTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900303 222759.8 35.307 82.501 5.7 29 24 148 0.3 C B/C 0.6 4 0.2 1.4 B 1.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA TRYN 23.6 101 ePd 22:28:04.28 ( 0.15 ) iS 22:28:07.14 (-0.15 ) TVA RBNC 44.5 277 iPc :07.88 ( 0.22 ) iS :13.14 (-0.24 ) TVA BRBC 51.8 22 eP :09.06 ( 0.19 ) eS :15.28 (-0.20 ) TVA RICH 73.8 337 eP :12.62 ( 0.17 ) eS :21.98 ( 0.30 ) TVA BENN 81.5 69 eP :13.82 ( 0.12 ) eS :23.36 (-0.48 ) TVA WSSR 98.1 268 eP :16.48 ( 0.00 ) eS :28.70 ( 0.06 ) TVA LMTN 104.6 308 eP :16.53 (-0.98X) eS :29.23 (-1.20X) TVA GFM 109.1 35 eP :18.58 ( 0.27 ) eS :31.46 (-0.35 ) TVA BRTN 121.2 344 P? :19.55 (-0.50 ) S? :34.61 (-0.22 ) TVA TKL 122.0 289 eP :19.41 (-0.74 ) S? :34.00 (-1.00X) TVA BBG 128.8 248 eS :37.22 ( 0.26 ) TVA PKNC 146.7 56 eP :24.14 ( 0.16 ) eS :42.16 ( 0.54 ) TVA CRTN 156.6 310 P? :24.81 (-0.65 ) S? :43.31 (-0.88 ) TVA ORT 176.6 293 S? :48.75 (-0.74 ) TVA ETT 177.7 271 eP :29.10 ( 0.39 ) eS :50.24 ( 0.43 ) TVA PLVA 193.3 38 eS :54.00 (-0.06 ) TVA GMG 203.9 257 eP :33.34 ( 0.57 ) eS :56.98 ( 0.16 ) TVA WMTN 225.0 269 S? :29:02.00 (-0.31 ) ***** 1990 MARCH 9; 06:11 - MORGANTON, NORTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I_ TVA 900309 061125.8 35.888 81.713 7.0 9 26 192 0.2 C B/D 0.8 76 0.3 2.5 B 2.0 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA GFM 26.2 341 iPc 06:11:30.60 ( 0.01 ) iS 06:11:34.08 (-0.02 ) TVA BENN 36.1 173 iPc :32.36 ( 0.18 ) iS :36.68 (-0.17 ) TVA BRBC 54.4 253 eS :42.20 ( 0.00 ) TVA TRYN 84.1 215 eS :49.54 (-1.04X) TVA RICH 99.9 272 eP :42.94 ( 0.22 ) TVA BRTN 116.3 297 S? :58.60 (-0.77 ) TVA RBNC 129.5 243 eS :12:07.10 ( 4.03X) TVA LMTN 153.3 270 P :12:00.00 ( 9.15X) S? :09.61 ( 0.45 ) TVA WSSR 182.1 249 eS :19.66 ( 2.74X) TVA TKL 188.1 263 P :00.00 ( 3.83X) S? :18.72 ( 0.36 ) ***** 1990 MARCH 16; 02:26 - FRANKLIN, NORTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900316 022641.2 35.340 83.377 15.2 10 20 131 0.3 C C/B 0.7 -21 0.3 1.9 B 1.4 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA WSSR 19.5 250 iPd 02:26:45.54 ( 0.02 ) eS 02:26:48.42 (-0.27 ) TVA RBNC 35.6 87 iPc :48.34 ( 0.46 ) iS :52.40 (-0.36 ) TVA TKL 50.5 315 eP :50.15 ( 0.14 ) eS :56.05 (-0.40 ) TVA LMTN 60.8 357 eP :51.28 (-0.33 ) eS :59.08 (-0.14 ) TVA BBG 65.1 218 eP :52.88 ( 0.55 ) eS :27:00.30 (-0.17 ) TVA CRTN 104.3 336 P :27:00.00 ( 1.73X) S? :15.65 ( 4.91X) TVA WMTN 145.6 266 P :00.00 (-4.58X) S? :27.30 ( 5.64X) ***** 1990 MARCH 18; 03:41 - MARYVILLE, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900318 034134.3 35.707 84.286 11.8 42 23 45 0.4 C C/B 0.2 -18 0.2 0.4 A 2.8 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ORT 22.5 356 iP 03:41:38.90 ( 0.23 ) S? 03:41:41.85 (-0.01 ) TVA ETT 45.0 200 iPd :42.24 ( 0.00 ) iS :47.46 (-0.57 ) TVA TKL 46.7 97 eP :42.24 (-0.26 ) iS :48.20 (-0.28 ) TVA BHT 61.6 285 ePc :45.50 ( 0.53 ) eS :53.20 ( 0.45 ) TVA CRTN 67.8 36 iPc :46.03 ( 0.05 ) iS :55.03 ( 0.53 ) TVA WSSR 80.0 126 iPc :48.46 ( 0.53 ) eS :57.44 (-0.43 ) TVA WMTN 80.5 231 iP :47.40 (-0.52 ) iS :56.80 (-1.07X) TVA LMTN 81.7 76 eP :47.65 (-0.47 ) iS :57.65 (-0.56 ) TVA ONTN 87.1 351 iP :48.63 (-0.32 ) iS :59.53 (-0.11 ) TVA ANTN 99.6 301 iP :50.40 (-0.47 ) TVA GMG 100.0 201 eP :50.82 (-0.15 ) eS :42:02.56 (-0.58 ) TVA BBG 102.1 155 iP :51.56 ( 0.25 ) eS :02.92 (-0.80X) TVA CCVA 113.9 29 eP :54.82 ( 1.76X) eS :08.90 ( 2.15X) TVA RBNC 124.2 108 ePc :55.56 ( 0.82 ) eS :10.32 ( 0.67 ) TVA RCG 126.2 230 iPd :55.52 ( 0.60 ) eS :11.36 ( 1.39X) TVA RICH 134.7 80 eP :58.66 ( 2.39X) TVA BRTN 146.7 60 eP :58.63 ( 0.54 ) S? :17.27 ( 1.82X) TVA PDTN 149.8 252 eP :58.14 (-0.39 ) eS :16.37 ( 0.16 ) TVA ABTN 166.0 277 iP :42:00.78 (-0.23 ) TVA BRBC 181.0 88 eP :04.64 ( 1.18 ) eS :26.42 ( 1.68X) TVA FDKY 181.1 312 iPd :03.41 ( 0.09 ) iS :27.85 ( 3.34X) TVA TRYN 191.5 104 eP- :06.30 ( 1.34 ) eS :28.86 ( 1.51X) TVA SLTN 211.5 67 eP :08.73 ( 0.67 ) eS :34.13 ( 1.43 ) TVA GFM 228.2 78 eP :12.20 ( 1.66 ) eS :39.24 ( 2.25X) TVA MSAL 237.2 247 eP :10.83 (-0.62 ) eS :39.42 ( 0.85 ) TVA BENN 238.3 93 eS :41.96 ( 3.03X) TVA HAKY 258.1 308 eP :14.53 ( 0.54 ) eS :45.98 ( 3.03X) TVA TCT 296.9 277 eP :19.55 ( 0.81 ) eS :53.08 ( 1.90 ) TVA LAL 311.9 244 eP :21.68 ( 1.09 ) eS :54.70 ( 0.32 ) TVA MOTN 347.9 288 P? :25.41 ( 0.44 ) S? :43:04.32 ( 2.35X) ***** 1990 MARCH 20; 16:10 - NEWPORT, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900320 161056.4 35.998 83.467 14.4 15 13 110 0.2 B B/B 0.6 66 0.5 0.7 A 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA LMTN 13.4 157 eP 16:10:59.65 (-0.15 ) eS 16:11:02.32 ( 0.03 ) TVA CRTN 40.4 304 eP :11:03.48 (-0.21 ) eS :09.23 ( 0.20 ) TVA TKL 46.8 216 eP :04.60 (-0.07 ) eS :10.66 (-0.07 ) TVA RICH 59.1 98 eP :06.52 (-0.09 ) eS :14.10 ( 0.03 ) TVA BRTN 67.0 53 P? :07.60 (-0.18 ) eS :16.38 ( 0.27 ) TVA WSSR 80.5 187 eP :09.18 (-0.74X) eS :19.76 (-0.04 ) TVA BRBC 110.4 105 eP :13.08 (-1.48X) eS :27.10 (-0.73X) TVA ETT 116.5 230 eP :15.36 ( 0.00 ) eS :29.10 (-0.11 ) TVA BBG 128.5 194 eS :32.86 ( 0.33 ) TVA GMG 166.8 221 eS :42.96 ( 0.34 ) ***** 1990 MARCH 21; 09:11 - SHELBYVILLE, KENTUCKY ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900321 091139.4 38.142 85.650 4.2 12 142 256 0.5 D C/D 1.4 3 1.0 1.5 B 2.7 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA HAKY 141.5 216 eP 09:12:02.04 ( 0.02 ) eS 09:12:18.42 ( 0.31 ) TVA FDKY 150.5 185 eP :03.12 (-0.34 ) eS :20.36 (-0.21 ) TVA ONTN 213.0 150 eP- :12.68 (-0.54 ) eS :38.07 ( 0.41 ) TVA ANTN 221.7 170 iPd :13.82 (-0.47 ) eS :40.12 ( 0.09 ) TVA CCVA 244.9 134 eP :18.36 ( 1.22 ) eS :48.18 ( 3.10X) TVA ABTN 253.7 189 eP :18.80 ( 0.60X) iS :48.20 ( 1.24X) TVA BHT 262.2 166 eP :19.76 ( 0.45X) eS :50.40 ( 1.50X) TVA MOTN 267.2 231 eP :21.00 ( 1.14 ) eS :50.62 ( 0.73 ) TVA CRTN 268.8 143 eP :20.60 ( 0.52X) eS :52.10 ( 1.83X) TVA ORT 275.1 154 eP :21.32 ( 0.48X) eS :52.35 ( 0.72X) TVA TCT 291.2 216 eP :24.48 ( 1.66X) S? :58.30 ( 3.16X) TVA BRTN 316.4 128 P? :26.65 ( 0.68 ) S? :13:03.50 ( 2.80X) TVA PDTN 318.8 183 P? :28.00 ( 1.77X) S? :04.25 ( 3.09X) TVA LMTN 319.9 141 P? :27.85 ( 1.46X) TVA TKL 322.3 148 P? :28.10 ( 1.44X) S? :05.25 ( 3.31X) TVA WMTN 326.7 169 P? :29.50 ( 2.29X) eS :03.00 ( 0.10X) TVA ETT 330.1 161 eP :29.36 ( 1.71X) eS :06.90 ( 3.22X) TVA WSSR 367.7 149 eP :35.68 ( 3.32X) TVA GMG 374.2 166 eP :38.98 ( 5.84X) TVA BBG 398.2 155 TVA PWLA 412.0 212 eP :41.84 ( 4.13X) ***** 1990 MARCH 21; 09:44 - DALTON, GEORGIA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900321 094439.0 34.842 85.082 12.7 32 28 170 0.3 C C/C 0.4 11 0.2 0.5 A 2.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA RCG 28.4 301 iPc 09:44:44.54 ( 0.23 ) TVA RHT 31.9 35 eP :45.00 ( 0.15 ) eS 09:44:51.00 ( 1.87X) TVA GMG 37.7 86 iPc :46.04 ( 0.22 ) iS :50.64 (-0.18 ) TVA WMTN 46.1 12 eP :47.10 (-0.02 ) iS :52.82 (-0.24 ) TVA DCT 64.9 69 eP :50.50 ( 0.34 ) eS :59.00 ( 0.67X) TVA ETT 78.4 47 eP+ :52.54 ( 0.30 ) eS :45:01.74 (-0.18 ) TVA BBG 116.3 88 eP :58.42 ( 0.32 ) eS :12.16 ( 0.10 ) TVA ORT 137.9 31 eP :45:01.60 ( 0.28 ) eS :20.55 ( 2.92X) TVA WSSR 145.5 70 ePc :02.24 (-0.33 ) eS :20.00 ( 0.21 ) TVA MSAL 145.6 271 eP :01.15 (-1.34X) eS :18.57 (-1.08 ) TVA ANTN 148.2 355 P? :02.70 (-0.21 ) S? :20.63 ( 0.24 ) TVA ABTN 148.7 321 iPd :02.70 (-0.28 ) iS :20.91 ( 0.41 ) TVA TKL 149.6 52 eP :02.64 (-0.46 ) eS :20.71 (-0.01 ) TVA CRTN 188.1 36 P? :09.10 ( 0.08 ) S? :31.53 ( 0.58 ) TVA ONTN 190.9 17 P? :09.35 (-0.11 ) S? :32.37 ( 0.66 ) TVA LMTN 191.1 52 P? :08.89 (-0.61 ) S? :31.85 ( 0.07 ) TVA RBNC 199.5 73 eS :34.18 ( 0.01 ) TVA LAL 211.6 258 P? :07.33 (-5.27X) eS :36.42 (-0.73 ) TVA FDKY 225.5 344 eP :14.92 ( 0.33 ) eS :41.10 ( 0.51 ) TVA RICH 237.8 59 eS :46.08 ( 2.74X) TVA TCT 258.9 301 eP :18.72 ( 0.06 ) eS :50.23 ( 2.60X) TVA TRYN 263.0 79 eS :50.78 ( 2.13X) TVA PWLA 272.9 274 eP :22.18 ( 1.80X) eS :52.70 ( 2.10X) TVA BRBC 273.1 68 eS :54.20 ( 3.17X) TVA BKA 297.8 244 eP :51.00 eS :59.50 ( 3.67X) ***** 1990 MARCH 24; 06:51 - COPPERHILL, TENNESSEE ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900324 065147.2 35.175 84.654 14.4 14 30 69 0.3 C B/C 0.4 72 0.3 0.7 A 2.2 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 24.7 47 iPd 06:51:53.10 ( 0.99X) iS 06:51:56.82 ( 1.13X) TVA WMTN 30.2 286 iP :52.77 (-0.13 ) iS :56.83 (-0.23 ) TVA GMG 34.7 182 iPc :53.88 ( 0.23 ) iS :58.34 (-0.01 ) TVA TQTN 38.4 350 eP :54.15 (-0.02 ) iS :59.52 ( 0.26 ) TVA RCG 67.1 251 eP- :59.02 ( 0.41 ) eS :52:07.06 ( 0.12 ) TVA BHT 79.1 341 eP :52:01.62 ( 1.14X) TVA BBG 83.9 113 eP :01.72 ( 0.46 ) iS :11.04 (-0.48 ) TVA ORT 87.4 21 P? :02.19 ( 0.47 ) eS :12.50 ( 0.18 ) TVA TKL 96.2 56 eP :02.75 (-0.31 ) eS :14.49 (-0.15 ) TVA WSSR 98.6 83 iPd :04.12 ( 0.60X) eS :15.42 (-0.01X) TVA PDTN 109.4 276 eP :05.40 ( 0.32X) eS :17.95 (-0.18X) TVA ANTN 122.3 335 iP :07.11 ( 0.03X) TVA CRTN 135.5 33 eP :09.47 ( 0.39X) eS :25.45 ( 0.39X) TVA LMTN 137.7 55 eP :08.88 (-0.56X) eS :25.20 (-0.48X) TVA ONTN 146.2 7 P? :10.51 (-0.23X) eS :28.80 ( 0.87X) TVA ABTN 153.7 301 iP :12.00 ( 0.13X) iS :30.46 ( 0.58X) TVA RICH 185.8 63 eP :19.14 ( 2.31X) eS :41.40 ( 2.94X) TVA MSAL 187.9 259 eP- :16.20 (-0.89X) eS :38.80 (-0.11X) TVA FDKY 206.6 330 eP :20.38 ( 0.42X) eS :46.40 ( 2.52X) TVA TRYN 219.5 87 eS :47.98 ( 0.62X) ***** 1990 MARCH 25; 13:47 - ANDREWS, NORTH CAROLINA ***** SRCE DATE HRMN SEC LAT-N LON-W DEPTH PH DMN GAP RMS Q SQD ERH1 AZ ERH2 ERZ Q MN MD MAGT I TVA 900325 134716.0 35.191 84.145 14.9 12 32 95 0.2 C C/C 0.5 -35 0.4 8.2 D 1.6 SRCE STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVA ETT 31.9 298 iPc 13:47:22.04 ( 0.05 ) eS 13:47:26.24 (-0.14 ) TVA BBG 46.6 139 eP :24.66 ( 0.36 ) iS :30.16 (-0.21 ) TVA WSSR 52.5 79 iPd :25.44 ( 0.22 ) eS :31.86 (-0.10 ) TVA GMG 60.2 233 eP :26.44 ( 0.07 ) eS :33.88 (-0.06 ) TVA TKL 61.8 33 eP :26.42 (-0.13 ) eS :34.12 (-0.15 ) TVA TQTN 63.9 305 P? :25.82 (-1.04X) S? :33.51 (-1.29X)