BULLETIN NUMBER 19 TABLE OF CONTENTS PAGE SOUTHEASTERN U. S. EARTHQUAKES: JULY THROUGH DECEMBER 1986............... 1 Acknowledgments........................................................ 2 References............................................................. 2 SEUSSN EARTHQUAKE STATISTICS............................................. 11 HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR SOUTHEASTERN U.S. EARTHQUAKES: JULY THROUGH DECEMBER 1986............. 15 HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR RESERVOIR ASSOCIATED SEISMICITY: JULY THROUGH DECEMBER 1986........... 35 ADDITIONAL ARRIVAL TIME DATA: JULY THROUGH DECEMBER 1986................ 41 APPENDICES............................................................... 43 Appendix A. Definitions and Operator Listing.......................... 45 Appendix B. Seismic Stations Operating During Report Period........... 47 Appendix C. Errata and Addenda........................................ 59 MAILING LIST............................................................. 61 FIGURES 1. Earthquake Epicenter Map for the Report Period...................... 3 2. Earthquake Epicenter Map for the Report Period (Scaled to Magnitude) 5 3. Earthquake Epicenter Map for the Period from July 1977 through December 1986..................................................... 7 4. Earthquake Epicenter Map for the Period from July 1977 through December 1986 (Scaled to Magnitude, M ge 3.0)..................... 9 5. Focal Depth Distribution of Southeastern U.S. Earthquakes........... 13 6. Seismic Stations Operating During Report Period..................... 51 7. Georgia Tech - Geological Survey Of Alabama Seismic Network......... 53 8. South Carolina Seismic Network...................................... 53 9. Tennessee Earthquake Information Center - Southern Appalachian Regional Seismic Network.............................. 55 10. Tennessee Valley Authority Seismic Network.......................... 55 11. Virginia Tech Seismic Network....................................... 57 SOUTHEASTERN U. S. EARTHQUAKES: JULY THROUGH DECEMBER 1986 There were 45 earthquakes (0.0 le M le 3.8) located within the SEUSSN monitoring area during the last six months of 1986. Of those, one in Georgia (11 July, mb(Lg) = 3.8), three in South Carolina (22 July, MD = 1.3; 17 August, MD = 1.7; 17 September, MD = 2.6), one in Tennessee (19 August, MD = 2.9), and three in Virginia (3, 10, 24 December, MD = 1.5, 2.2, 1.6, respectively) were felt. Southeastern Tennessee continues to have the highest level of seismic activity within the region. Earthquakes reported include four in Alabama, four in Georgia, one in Kentucky, one in North Carolina, six in South Carolina, 21 in Tennessee, seven in Virginia, and one in West Virginia. Figures 1 and 2 are epicenter maps of tectonic events (M ge 0) located within the region during the report period. Figures 3 and 4 are cumulative epicenter maps for the 9.5 year period from July 1977 through December 1986 (SEUSSN Bulletins 1 through 19). The SEUSSN earthquake statistics section now includes estimates of catalog completeness (page 12) as well as catalog statistics (page 11) and focal depth distribution plots (Figure 5; page 13). The largest earthquake for the report period was a mb(Lg) = 3.8 event (11 July) that was felt (epicentral MMI = VI) in northwestern Georgia and southeastern Tennessee. Also of interest was a series of small magnitude events that were felt within a four block area of downtown Richmond, Virginia. The largest of those events (10 December, MD = 2.2, epicentral MMI = V). Because such small events were felt so noticeably, the shallow focal depths that were computed (1-2 km) are believed to be realistic. A VTSO Special Study (#87-1) of these earthquakes is available from the editors. There were 18 reservoir related earthquakes (0.0 le M le 2.8) during the last six months of 1986. Most of those occurred in mid-July and were associated with Lake Keowee in South Carolina. Acknowledgments This report is the nineteenth semiannual BULLETIN OF SEISMICITY OF THE SOUTHEASTERN UNITED STATES and covers the period from July through December, 1986. The organizations supplying data for this Bulletin are the Delaware Geological Survey, the E. I. DuPont de Nemours and Company, Inc. (Savannah River Laboratory), Georgia Institute of Technology, Memphis State University (Tennessee Earthquake Information Center), the Tennessee Valley Authority, the University of South Carolina, the United States Geological Survey, the Virginia Division of Mineral Resources, and Virginia Polytechnic Institute and State University (Seismological Observatory). 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: The Georgia Power Company, The National Science Foundation, The Nuclear Regulatory Commission, The Tennessee Valley Authority, The United States Geological Survey, Virginia Power. References Evernden, J. F., (1967), MAGNITUDE DETERMINATION AT REGIONAL AND NEAR-REGIONAL DISTANCES IN THE UNITED STATES, Bulletin of the Seismological Society of America, 57, pp. 591-639. 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 PROGRAM FOR DETERMINING HYPOCENTER, MAGNITUDE, AND FIRST MOTION PATTERN OF LOCAL EARTHQUAKES, United States 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. Ott, L., (1984), AN INTRODUCTION TO STATISTICAL METHODS AND DATA ANALYSIS, Second Edition, Duxbury Press, Boston, MA, 775 pp. FIGURE 1. Epicenters (Open Circles) for Earthquakes (M ge 0.0) in the Southeastern United States from July through December 1986. FIGURE 2. Epicenters (Open Circles - Scaled to Event Magnitude) for Earthquakes (M ge 0.0) in the Southeastern United States from July through December 1986. FIGURE 3. Epicenters (Open Circles) for Earthquakes (M ge 0.0) in the Southeastern United States from July 1977 through December 1986. FIGURE 4. Epicenters (Open Circles - Scaled to Event Magnitude) for Earthquakes (M ge 3.0) in the Southeastern United States from July 1977 through December 1986. SEUSSN EARTHQUAKE STATISTICS Period: July through December 1986 (0.5 years) Tectonic Reservoir Number of Earthquakes with M ge 0.0 45 18 Number of Earthquakes with M ge 2.5 8 3 Number of Earthquakes with M ge 3.5 1 0 Mean Earthquake Magnitude 1.7 1.8 Median Earthquake Magnitude 1.7 1.8 Number of Felt Earthquakes 8 0 Number of Earthquakes with Known Dmin le 25.0 km 31 18 Number of Earthquakes with Known ERH le 5.0 km 44 17 Number of Earthquakes with Known ERZ le 5.0 km 32 11 Largest Earthquake Reported 11 July 1986; 14:26 - Cohutta, GA mb(Lg) = 3.8, MDB = 3.7, MMI = VI Number of Blasts or Non-locatable Events Reported 0 Number of Events Outside the SEUSSN Area Reported 0 Number of Seismograph Stations Operating 140 Period: July 1977 through December 1986 (9.5 years) Tectonic Reservoir Number of Earthquakes with M ge 0.0 568 620 Number of Earthquakes with M ge 2.5 125 52 Number of Earthquakes with M ge 3.5 13 1 Mean Earthquake Magnitude 1.8 1.4 Median Earthquake Magnitude 1.8 1.4 Number of Felt Earthquakes 83 3 Number of Earthquakes with Known Dmin le 25.0 km 291 92 Number of Earthquakes with Known ERH le 5.0 km 467 120 Number of Earthquakes with Known ERZ le 5.0 km 392 91 Largest Earthquake Reported July 27, 1980; 18:52 - Sharpsburg, KY mb = 5.2, MMI = VII Number of Blasts or Non-locatable Events Reported 161 Number of Events Outside the SEUSSN Area Reported 10 FIGURE 5. Focal Depth Distribution of Southeastern U.S. Earthquakes. The upper half of the figure shows the interval (left) and cumulative (right) depth distributions for the report period while the lower half of the figure is a similar display for earthquakes reported during the period from July 1977 through December 1986 (M ge 0.0 and ERZ le 5.0 km). Displayed above both interval distributions is a box plot (Ott, 1984, pp. 43-47; 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 distributions arrows show the 10% and 90% depths. HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR SOUTHEASTERN U. S. EARTHQUAKES: JULY THROUGH DECEMBER 1986 Events are listed chronologically (this also applies to multiple hypocenter locations for the same event). All times are Universal Time. Most entries in the listing are self-explanatory. Items that might require further explanation are defined in Appendix A. ***** 4 JULY 1986; 21:55 - MASCOT, TENNESSEE ***** *TEIC OT= 21:55:09.75 LAT= 36.060N LON= 83.656W DEP= 18.1 KM MDB= 1.2 NO= 16, GAP= 177 DEG, RMS= 0.14 SEC, SDOT= 0.11 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= 25 DEG; ERHMIN= 0.3 KM; ERZ= 1.1 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CRTN 22.8 313 ePc 21:55:14.65 ( 0.00 ) iS 21:55:18.13 (-0.09 ) HPK 25.0 234 iP- :15.00 ( 0.09 ) iS :18.90 ( 0.22 ) LMTN 29.3 130 ePc :15.51 (-0.03 ) iS :19.72 (-0.06 ) TKL 45.8 193 eP :18.00 ( 0.08 ) eS :23.70 (-0.19 ) GBTN 66.5 229 eP :21.00 (-0.05 ) eS :29.10 (-0.21 ) RICH 77.1 101 eP :22.25 (-0.48X) eS :32.38 ( 0.17 ) ONTN 84.8 304 eS :34.40 ( 0.19 ) WSSR 87.0 175 eP :24.20 (-0.09 ) eS :35.25 ( 0.35 ) ETT 108.9 222 eS :41.00 ( 0.44 ) BBG 132.3 186 eS :47.00 ( 0.13 ) TRYN 155.0 124 eS :53.50 ( 0.68X) GFM 166.6 87 eS :56.00 (-0.02X) ***** 5 JULY 1986; 21:16 - KNOXVILLE, TENNESSEE ***** *TEIC OT= 21:16:12.25 LAT= 35.887N LON= 83.900W DEP= 3.6 KM MDB= 1.6 NO= 11, GAP= 147 DEG, RMS= 0.20 SEC, SDOT= 0.10 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= 83 DEG; ERHMIN= 0.5 KM; ERZ= 1.8 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKL 27.9 156 eP 21:16:17.20 (-0.05 ) eS 21:16:21.00 ( 0.10 ) CRTN 35.1 9 eP :18.74 ( 0.22 ) eS :22.71 (-0.39 ) ORT 36.6 274 eP :19.40 ( 0.60X) eS :23.91 ( 0.34 ) GBTN 37.3 229 eP :19.00 ( 0.08 ) eS :23.50 (-0.28 ) LMTN 44.4 90 eS :26.19 ( 0.29 ) WSSR 73.7 157 eP :25.10 ( 0.07 ) eS :34.15 (-0.21 ) ETT 80.1 219 eP :26.00 (-0.03 ) eS :35.10 (-0.99X) WMTN 120.4 234 eS :48.10 ( 0.73X) ***** 11 JULY 1986; 14:26 - COHUTTA, GEORGIA ***** *TEIC Widely felt throughout area with minor damage. *NEIC Slight damage (VI) at Cohutta, GA. Felt (V) at Chattanooga, TN and Tunnel Hill, GA. Felt (IV) at Apison, Benton, Charleston, Collegedale, East Ridge, Ocoee and Ooltewah, TN. Also felt (IV) at Blue Ridge, Cisco, Crandall, Fort Oglethorpe, Ringgold, Rocky Face and Varnell, GA. Felt in southeastern TN and northwestern GA. *NEIC OT= 14:26:14.4 LAT= 34.946N LON= 84.971W DEP= 5.0 FXD KM mb= 3.7 mb(Lg)= 3.8 NO= 30, STANDARD DEVIATION= 0.8 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) WMTN 33.4 360 iPc 14:26:20.80 ( 0.3 ) PDTN 87.8 295 eP :29.23 (-1.0 ) ORT 122.3 29 iPd :35.23 (-0.4 ) iS 14:26:50.00 ( X) TKL 134.6 54 iPd :36.90 (-0.5 ) ANTN 137.9 350 iPc :37.34 (-0.6 ) ABTN 146.8 316 iPc :38.90 (-0.4 ) HPKT 146.8 42 iPd :38.70 (-0.6 ) iS :55.90 ( X) MSAL 155.7 266 iPd :39.49 (-1.2 ) CRTN 172.4 36 iPd :42.71 (-0.1 ) LMTN 175.7 53 iPd :43.08 (-0.1 ) ONTN 176.8 15 eP :43.35 ( 0.0 ) SHTN 204.6 287 ePd :47.14 ( 0.2 ) SSKY 218.0 340 iP :50.10 ( 1.4 ) PRM 258.0 111 eP :54.90 ( 1.1 ) PWLA 282.4 272 iPc :58.50 ( 1.5 ) SLTN 306.9 56 ePd :27:00.70 ( 0.5 ) GFM 314.7 65 iPd :02.20 ( 0.9 ) MOTN 330.3 305 eP :04.28 ( 1.3 ) JSC 348.1 101 eP :05.50 ( 0.2 ) LHS 384.7 97 eP :10.00 ( 0.0 ) NAV 459.3 54 eP :18.80 (-0.7 ) ELC 462.6 305 eP :20.00 ( 0.0 ) BLA 480.4 57 eP :21.00 (-1.3 ) BLO 489.3 344 P :24.70 ( 1.4 ) FVM 593.8 306 eP :36.50 (-0.2 ) RLO 920.7 281 iPn :28:17.50 (-0.6 ) ELF 968.5 18 P :16.60 (-7.4X) TUL 988.6 279 ePn :26.50 ( 0.1 ) Sn? :30:02.00 ( X) eSg :52.50 ( X) SIO 1034.2 278 Pn? :32.20 ( 0.1 ) RSNY 1390.0 37 eP :29:11.00 (-4.7X) LTX 1867.0 256 eP :30:11.00 (-0.9 ) GOL 1879.3 292 eP :13.00 (-0.4 ) RSON 1903.7 341 eP :12.00 (-3.9X) ----- *GIT OT= 14:26:14.6 LAT= 34.939N LON= 84.991W DEP= 20.7 KM MDB= 3.8 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -55 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 18.4 33 P 14:26:18.75 (-0.37 ) S 14:26:21.00 (-1.41 ) GMG 30.5 106 P :20.52 (-0.09 ) RCG 32.9 277 P :20.89 (-0.04 ) WMTN 34.4 3 P :20.80 (-0.33 ) CDG 47.0 141 P :22.90 (-0.04 ) S :29.10 ( 0.07 ) DCT 53.7 76 P :23.40 (-0.54 ) S :29.89 (-0.87 ) RCT 54.2 34 P :24.80 ( 0.79 ) LKGA 56.3 232 P :24.37 ( 0.03 ) ETT 65.0 49 P :25.80 ( 0.15 ) TVG 68.5 205 P :26.50 ( 0.30 ) S :34.80 ( 0.12 ) CBT 84.4 38 P :28.96 ( 0.31 ) S :39.00 ( 0.09 ) PDTN 86.5 295 P :29.30 ( 0.32 ) BHT 100.9 2 P :31.50 ( 0.29 ) GBTN 107.2 41 P :32.20 (-0.01 ) BBG 108.1 94 P :32.70 ( 0.35 ) HGA 108.9 226 P :32.70 ( 0.22 ) S :45.70 ( 0.15 ) WSSR 133.9 74 P :36.97 ( 0.59 ) TKL 136.0 54 P :36.90 ( 0.19 ) OCA 137.3 255 P :37.00 ( 0.10 ) S :54.00 ( 0.78 ) ATL 177.7 160 P :43.10 (-0.08 ) S :27:04.00 (-0.09 ) RBNC 188.0 76 P :45.20 ( 0.42 ) HVA 192.9 238 P :45.50 (-0.03 ) S :09.00 ( 0.83 ) CCVA 219.4 33 P :49.80 ( 0.21 ) RICH 224.2 61 P :50.75 ( 0.43 ) TRYN 250.7 82 P :54.90 ( 0.57 ) ----- *TEIC OT= 14:26:14.75 LAT= 34.937N LON= 84.987W DEP= 13.0 KM MDB= 3.7 NO= 38, GAP= 64 DEG, RMS= 0.16 SEC, SDOT= 0.03 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -54 DEG; ERHMIN= 0.2 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 18.3 31 P 14:26:18.60 (-0.01 ) S 14:26:21.60 ( 0.18 ) GMG 30.1 106 iPc :20.52 ( 0.10 ) RCG 33.2 277 iPd :20.89 ( 0.03 ) WMTN 34.5 2 iPc :20.80 (-0.25 ) CDG 46.3 141 P :22.90 (-0.03 ) S :29.10 ( 0.19 ) DCT 53.4 76 P :24.00 (-0.09 ) S :30.40 (-0.51 ) RCT 54.1 33 P :24.80 ( 0.61X) LKGA 56.4 232 iPd :24.33 (-0.26 ) ETT 64.9 48 iPd :25.80 (-0.12 ) TVG 68.5 205 P :26.50 ( 0.05 ) S :34.80 (-0.19 ) CBT 84.4 37 P :28.90 ( 0.02 ) S :39.20 ( 0.00 ) PDTN 87.0 296 eP+ :29.23 (-0.06 ) CPO 90.2 324 iPc :30.00 ( 0.20 ) BHT 101.0 2 iPc :31.50 ( 0.03 ) GBTN 107.4 41 iPd :32.30 (-0.10 ) BBG 107.7 93 iPd :32.70 ( 0.16 ) HGA 108.9 227 P :32.70 ( 0.07 ) S :45.70 ( 0.01 ) ORT 124.4 30 iPd :35.23 ( 0.22 ) iS :50.00 ( 0.20 ) WSSR 133.9 73 iPd :36.90 ( 0.34 ) TKL 136.3 54 iPd :36.90 ( 0.07 ) OCA 137.3 255 P :37.00 ( 0.02 ) S :54.00 ( 0.80 ) ANTN 138.8 351 ePc :37.34 ( 0.11 ) ABTN 146.5 316 iPc :38.90 ( 0.51 ) HPK 148.9 42 iPd :38.70 (-0.05 ) iS :55.90 (-0.37 ) MSAL 154.5 267 iPd :39.49 (-0.12 ) CRTN 174.4 36 iPd :42.71 ( 0.03 ) LMTN 178.0 53 iPd :43.08 (-0.17 ) ONTN 178.3 16 eP+ :43.35 ( 0.06 ) RBNC 188.2 75 iPd :45.15 ( 0.24 ) HVA 192.3 239 P :45.50 ( 0.10 ) S :27:09.00 ( 1.23X) SHTN 203.6 287 ePd :47.14 ( 0.01X) iS :12.00 ( 1.23X) CCVA 220.0 32 ePd :49.80 ( 0.13X) RICH 225.0 60 iPd :50.75 ( 0.28X) ETG 236.9 140 P :53.50 ( 1.28X) BRTN 248.3 50 iPd :53.29 (-0.45X) TRYN 252.6 81 iPd :54.90 ( 0.59X) eS :24.00 ( 0.81X) BRBC 261.2 69 iPd :55.50 ( 0.01X) PWLA 281.1 272 iP :58.50 ( 0.80X) eS :29.00 (-0.05X) SLTN 308.6 56 ePd :27:00.70 (-0.36X) BENN 310.6 76 iPd :01.71 ( 0.31X) GFM 316.5 65 eP- :02.30 ( 0.08X) eS :37.20 ( 0.32X) PKNC 368.6 69 iPd :08.19 (-0.28X) ***** 12 JULY 1986; 13:16 - POWELL, TENNESSEE ***** *TEIC OT= 13:16:41.21 LAT= 36.003N LON= 84.087W DEP= 3.8 KM MDB= 1.8 NO= 16, GAP= 87 DEG, RMS= 0.20 SEC, SDOT= 0.07 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -59 DEG; ERHMIN= 0.3 KM; ERZ= 1.0 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ORT 22.2 242 eP 13:16:45.16 (-0.07 ) eS 13:16:48.40 ( 0.24 ) CRTN 31.1 45 eP :46.55 (-0.24 ) eS :50.90 ( 0.03 ) GBTN 39.0 197 eP :48.00 (-0.16 ) iS :53.10 (-0.14 ) TKL 47.5 143 eP :49.60 ( 0.02 ) eS :56.00 ( 0.31 ) ONTN 62.1 329 eP :51.73 (-0.27 ) eS :17:00.07 ( 0.19 ) WSSR 92.7 150 eP :56.91 (-0.20 ) eS :09.02 ( 0.30 ) RICH 114.8 94 eP :17:00.65 (-0.02X) RBNC 122.7 125 eP :02.00 ( 0.03 ) BBG 127.7 169 eP :02.20 (-0.49 ) eS :18.30 (-0.06 ) GMG 137.1 203 eP :04.55 ( 0.44X) eS :21.00 ( 0.18 ) GFM 205.8 86 eP :17.20 ( 2.53X) eS :40.05 ( 0.95X) ***** 12 JULY 1986; 17:25 - MASCOT, TENNESSEE ***** *TEIC OT= 17:25:06.92 LAT= 36.030N LON= 83.671W DEP= 12.8 KM MDB= 2.3 NO= 29, GAP= 63 DEG, RMS= 0.12 SEC, SDOT= 0.03 SEC, Q= B, SQD= A/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.2 KM, AZ= -2 DEG; ERHMIN= 0.2 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HPK 22.0 239 iP- 17:25:11.40 ( 0.11 ) iS 17:25:14.40 (-0.09 ) CRTN 24.3 321 iPc :11.56 (-0.09 ) LMTN 28.4 123 iPc :12.19 (-0.08 ) TKL 42.3 193 eP :14.50 ( 0.06 ) eS :19.90 (-0.03 ) ORT 58.7 257 eP+ :17.20 ( 0.09 ) iS :24.63 ( 0.09 ) GBTN 63.3 231 iP :17.90 ( 0.07 ) eS :25.50 (-0.29 ) CCVA 63.6 0 eP :18.00 ( 0.10 ) RICH 77.8 99 eP :20.10 (-0.01 ) BRTN 80.8 63 ePc :20.18 (-0.37 ) eS :30.48 (-0.01 ) WSSR 83.8 174 eP+ :21.10 ( 0.03 ) ONTN 85.7 306 ePc :21.16 (-0.13 ) iS :31.82 ( 0.05 ) RBNC 97.0 140 iPc :23.15 ( 0.02 ) BBG 128.8 186 eP :28.10 ( 0.14 ) eS :43.50 ( 0.18 ) BRBC 129.1 104 eP :28.20 ( 0.14 ) eS :43.55 ( 0.05 ) ANTN 141.4 277 eP :30.00 ( 0.18 ) eS :47.28 ( 0.74X) SLTN 146.7 71 eP :30.87 ( 0.28 ) TRYN 154.3 123 eP :32.40 ( 0.58 ) eS :50.00 ( 0.00 ) GMG 158.1 215 eP :32.60 ( 0.18 ) GFM 168.1 86 eP :34.00 (-0.02 ) eS :54.00 ( 0.21 ) CPO 178.3 255 eP :36.05 ( 0.58X) PDTN 214.4 248 eP :41.70 ( 0.73X) ABTN 220.5 267 eP :42.97 ( 1.05X) LKGA 226.2 227 eP :43.22 ( 0.41X) ***** 19 JULY 1986; 12:31 - COHUTTA, GEORGIA ***** *TEIC OT= 12:31:53.57 LAT= 34.953N LON= 84.994W DEP= 13.5 KM MDB= 2.4 NO= 31, GAP= 122 DEG, RMS= 0.18 SEC, SDOT= 0.04 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -10 DEG; ERHMIN= 0.2 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 17.2 36 P 12:31:57.20 (-0.13 ) S 12:31:60.10 ( 0.03 ) GMG 31.2 109 iPc :59.40 (-0.04 ) eS :32:04.00 ( 0.28 ) RCG 32.5 274 ePd :59.78 ( 0.20 ) eS :03.70 (-0.26 ) WMTN 32.8 3 ePc :59.84 ( 0.23 ) eS :03.80 (-0.23 ) CDG 48.1 142 P :32:01.50 (-0.55X) S :07.20 (-1.05X) DCT 53.6 78 P :02.80 (-0.16 ) S :09.50 (-0.31 ) LKGA 57.1 230 iPd :03.37 (-0.15 ) ETT 64.2 50 iP- :04.60 ( 0.00 ) eS :12.50 (-0.15 ) CBT 83.4 39 P :07.80 ( 0.29 ) S :17.80 ( 0.11 ) PDTN 85.7 295 eP :08.03 ( 0.15 ) CPO 88.5 324 ePc :09.44 ( 1.13X) eS :19.52 ( 0.44X) BHT 99.3 3 eP :09.85 (-0.14 ) GBTN 106.4 42 eP :11.10 ( 0.06 ) eS :23.90 ( 0.10 ) BBG 108.4 94 eP :11.40 (-0.04 ) eS :24.50 ( 0.01 ) HGA 109.7 226 P :12.30 ( 0.76X) S :25.20 ( 0.54X) ORT 123.2 30 eP :14.32 ( 0.71X) iS :29.07 ( 0.83X) WSSR 134.0 74 iP+ :15.60 ( 0.24 ) TKL 135.7 54 eP :15.50 (-0.03 ) eS :31.50 (-0.06 ) ANTN 136.9 351 ePd :16.33 ( 0.59X) ABTN 144.8 316 ePc :17.84 ( 0.92X) eS :34.85 ( 0.88 ) MSAL 154.0 266 ePd :18.47 ( 0.15 ) eS :37.26 ( 0.87 ) CRTN 173.4 37 eP :21.65 ( 0.34 ) LMTN 177.5 54 eP :21.98 ( 0.03 ) RBNC 188.3 76 eP :24.35 ( 0.63 ) eS :46.50 ( 0.77 ) SHTN 202.5 287 eP :26.10 ( 0.35X) iS :50.60 ( 1.36X) SSKY 216.8 341 eP :29.00 ( 1.06X) SMTN 228.1 45 eP :29.60 (-0.12X) eS :56.20 ( 0.10X) ETG 238.6 140 P :32.10 ( 0.83X) S :33:00.00 ( 1.22X) TRYN 252.9 81 eP :34.00 ( 0.89X) eS :04.00 ( 2.02X) ----- *GIT OT= 12:31:54.0 LAT= 34.942N LON= 84.975W DEP= 10.6 KM MDB= 1.9 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.2 KM, AZ= -27 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 17.3 29 P 12:31:57.20 (-0.17 ) S 12:32:00.10 ( 0.26 ) DALG 18.8 191 P :57.40 (-0.19 ) CDG 46.4 142 P :32:01.50 (-0.35 ) S :07.20 (-0.39 ) DCT 52.2 76 P :02.80 ( 0.02 ) S :09.50 ( 0.30 ) CBT 83.2 37 P :07.80 ( 0.05 ) S :17.80 (-0.02 ) HGA 110.3 227 P :12.30 ( 0.20 ) S :25.20 (-0.16 ) ATL 177.5 161 P :23.20 ( 0.40 ) S :44.20 ( 0.30 ) ETG 237.5 140 P :32.10 (-0.04 ) S :33:00.00 (-0.09 ) ***** 20 JULY 1986; 19:24 - NORTH OF CHARLOTTESVILLE, VIRGINIA ***** *VTSO OT= 19:24:04.20 LAT= 38.086N LON= 78.525W DEP= 12.64 KM MDB= 1.1 NO= 6, GAP= 292 DEG, RMS RES= 0.06 SEC, SDOT= 0.22 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= -20 DEG; ERHMIN= 0.9 KM; ERZ= 1.5 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CVL 12.9 154 iP 19:24:07.15 (-0.04 ) iS 19:24:09.40 ( 0.03 ) GHV 49.0 131 eP? :12.40 (-0.11 ) iS :18.60 ( 0.02 ) NA2 68.4 86 eP :15.70 ( 0.08 ) eS :23.90 (-0.06 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 19:24:07.2 Sg 19:24:09.5 ***** 22 JULY 1986; 22:49 - SUMMERVILLE, SOUTH CAROLINA ***** *USGS Felt in Summerville, South Carolina, area. *USGS OT= 22:49:00.50 LAT= 32.931N LON= 80.168W DEP= 5.8 KM MDL= 1.3 NO= 16, GAP= 99 DEG, RMS RES= 0.22 SEC, SDOT= 0.15, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.3 KM, AZ= -89 DEG; ERHMIN= 0.7 KM; ERZ= 2.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RGR 3.7 221 iPd 22:49:02.03 ( 0.12 ) MGS 4.5 145 iPc :01.95 (-0.05 ) eS 22:49:03.04 ( 0.22 ) SVS 8.6 299 iPd :02.53 ( 0.00 ) eS :03.75 ( 0.02 ) WAS 13.4 227 iPd :03.46 ( 0.20 ) eS :05.43 (-0.49 ) ZIN 19.7 2 iPd :04.11 (-0.17 ) eS :06.45 (-0.30 ) HWD 23.8 207 eP+ :05.15 ( 0.19 ) S :08.06 (-0.24 ) eS :09.00 ( 0.11 ) DRC 28.5 314 eP- :05.88 ( 0.15 ) eS :10.10 ( 0.25 ) VEW 31.8 138 eP :06.38 ( 0.09 ) PBF 38.9 101 eP :07.11 (-0.37 ) ----- *NEIC OT= 22:49:00.5 LAT= 32.93lN LON= 80.168W DEP= 5.8 KM MD= 1.8 NO= 5 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) WGS 4.4 146 iPc 22:49:01.95 ( 0.0 ) eS 22:49:03.04 ( X) SVS 8.9 299 iPd :02.53 ( 0.1 ) eS :03.75 ( X) HWD 23.4 207 eP :05.10 ( 0.2 ) eS :09.00 ( X) DRC 28.9 314 eP :05.88 ( 0.2 ) eS :10.10 ( X) VEW 32.2 138 eP :06.38 ( 0.1 ) ***** 25 JULY 1986; 12:43 - LOUDON, TENNESSEE ***** *TEIC OT= 12:43:55.10 LAT= 35.635N LON= 84.253W DEP= 14.2 KM MDB= 1.5 NO= 8, GAP= 199 DEG, RMS= 0.12 SEC, SDOT= 0.27 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.9 KM, AZ= -34 DEG; ERHMIN= 0.5 KM; ERZ= 1.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 5.2 48 iP 12:43:57.80 ( 0.07 ) eS 12:43:59.60 (-0.05 ) ETT 38.8 208 iP :44:02.30 ( 0.14 ) eS :44:07.20 (-0.10 ) TKL 43.5 86 iP :02.70 (-0.18 ) iS :08.70 ( 0.15 ) BBG 93.5 154 eP :10.50 (-0.14 ) eS :22.10 ( 0.11 ) ***** 1 AUGUST 1986; 08:19 - NEWBERRY, SOUTH CAROLINA ***** *USC OT= 08:19:23.8 LAT= 34.354N LON= 81.534W DEP= 7.4 KM MDL= 2.5 NO= 9, GAP= 322 DEG, RMS RES= 0.05 SEC, Q= C, SQD= B/D ERROR ESTIMATES (HYPO71) (ERH= 1.3 KM; ERZ= 2.8 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MR10 18.2 96 P 08:19:27.00 ( 0.01 ) S 08:19:29.50 (-0.08 ) MR07 19.3 85 P :27.20 ( 0.05 ) MR9A 20.3 112 P :27.30 ( 0.01 ) S :30.20 ( 0.06 ) MR01 22.1 96 P :27.50 (-0.07 ) S :30.70 ( 0.06 ) JSC 26.5 108 P :28.20 (-0.05 ) MR02 33.2 123 P :29.30 (-0.03 ) ***** 7 AUGUST 1986; 12:36 - NIOTA, TENNESSEE ***** *TEIC OT= 12:36:45.98 LAT= 35.506N LON= 84.561W DEP= 20.1 KM MDB= 2.7 NO= 30, GAP= 85 DEG, RMS= 0.18 SEC, SDOT= 0.07 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -42 DEG; ERHMIN= 0.2 KM; ERZ= 1.3 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCT 20.1 207 P 12:36:50.80 ( 0.10 ) ETT 22.2 154 iPc :51.10 ( 0.12 ) iS 12:36:54.00 (-0.64X) GBTN 36.4 61 iPd :52.80 (-0.05 ) iS :57.70 (-0.16 ) WMTN 47.2 233 ePc :54.37 (-0.05 ) iS :37:00.40 (-0.19 ) ORT 50.4 27 ePc :54.84 (-0.06 ) iS :01.33 (-0.09 ) BHT 51.3 318 ePc :54.89 (-0.20 ) eS :02.10 ( 0.36 ) DCT 51.8 166 P :55.00 (-0.13 ) eS :01.20 (-0.61X) RHT 55.8 212 P :55.50 (-0.20 ) eS :03.00 ( 0.20 ) GMG 72.1 188 ePc :58.21 (-0.03 ) TKL 73.3 77 iP :58.50 ( 0.15 ) eS :07.50 ( 0.12 ) RCG 92.8 231 eP :37:01.40 ( 0.07 ) eS :12.25 (-0.29 ) WSSR 92.8 106 eP :01.75 ( 0.32 ) eS :12.50 (-0.21 ) BBG 97.9 136 iPc :02.60 ( 0.40 ) iS :14.00 (-0.04 ) CRTN 100.8 40 eP :02.80 ( 0.24 ) eS :15.28 ( 0.62X) LMTN 112.6 68 eP- :04.21 (-0.17 ) eS :17.67 (-0.14 ) LKGA 128.5 221 eP :07.00 ( 0.20 ) eS :22.80 ( 0.79X) TVG 142.4 209 P :09.60 ( 0.70X) eS :26.10 ( 0.46 ) RBNC 144.0 96 ep :11.00 ( 1.72X) es :26.60 ( 0.30 ) SMTN 157.9 52 eP :11.60 ( 0.29 ) eS :30.50 ( 0.70X) BRTN 179.6 58 eP :15.18 ( 0.56X) eS :37.12 ( 1.59X) SSKY 180.9 323 eP :14.76 (-0.04 ) eS :36.25 ( 0.41X) MSAL 205.9 250 eP :17.97 (-0.64X) eS :42.93 ( 0.50X) TRYN 212.0 97 eP :20.00 ( 0.39X) eS :44.50 ( 0.34X) BGKY 242.4 314 eS :52.40 ( 1.47X) SLTN 243.4 64 eP :24.61 ( 0.98X) eS :53.87 ( 2.75X) GFM 257.8 74 eP :26.50 ( 0.90X) eS :56.20 ( 1.68X) ----- *GIT OT= 12:36:46.5 LAT= 35.498N LON= 84.543W DEP= 14.9 KM MDB= 2.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -45 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCT 20.1 213 P 12:36:50.80 ( 0.17 ) ETT 20.7 157 P :51.10 ( 0.39 ) S 12:36:54.00 ( 0.23 ) GBTN 35.3 58 P :52.80 ( 0.00 ) S :57.00 (-0.41 ) DCT 50.5 167 P :55.00 (-0.13 ) S :37:01.20 (-0.24 ) RHT 56.0 214 P :55.50 (-0.48 ) S :03.00 ( 0.09 ) TKL 71.8 76 P :58.50 ( 0.02 ) S :07.50 ( 0.27 ) BBG 96.3 136 P :37:02.60 ( 0.24 ) S :14.00 ( 0.04 ) TVG 142.6 209 P :09.60 (-0.10 ) S :26.10 (-0.59 ) SMTN 156.6 51 P :11.60 (-0.30 ) S :30.50 ( 0.00 ) TRYN 209.2 98 P :20.00 (-0.12 ) S :44.50 (-0.23 ) GFM 255.5 75 P :26.50 (-0.70 ) ***** 9 AUGUST 1986; 07:58 - HILLSVILLE, VIRGINIA ***** TEIC location for informational purposes only *TEIC OT= 07:58:17.15 LAT= 36.793N LON= 80.740W DEP= 12.3 KM MDB= 2.4 NO= 20, GAP= 180 DEG, RMS= 0.13 SEC, SDOT= 0.06 SEC, Q= C, SQD= A/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -63 DEG; ERHMIN= 0.3 KM; ERZ= 0.5 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PUV 26.5 345 iPc 07:58:22.25 ( 0.07 ) iS 07:58:26.00 ( 0.14 ) WMV 40.6 330 ePc :24.20 (-0.24 ) iS :29.77 ( 0.00 ) BLA 54.4 31 eP :26.74 ( 0.11 ) eS :33.40 (-0.16 ) NAV 58.4 355 eP :27.86 ( 0.59X) eS :34.32 (-0.35 ) PWV 66.1 336 eP :29.40 ( 0.82X) eS :36.96 ( 0.04 ) VWV 80.9 22 eP :30.79 (-0.05 ) eS :40.90 ( 0.06 ) GFM 122.0 232 eP :36.40 (-0.80X) eS :53.70 ( 1.86X) BENN 159.5 212 eP :43.10 ( 0.23 ) eS :59:01.60 (-0.04 ) BRBC 181.6 230 eP :46.45 ( 0.09 ) eS :07.30 (-0.38 ) TRYN 217.0 219 eP :51.60 (-0.08 ) eS :16.90 ( 0.01 ) SMTN 223.2 259 eP :52.60 (-0.03 ) eS :20.00 ( 1.47X) RBNC 257.5 232 eP :57.59 ( 0.08 ) eS :27.88 ( 0.91X) CCVA 262.4 266 eP :59.60 ( 1.67X) eS :29.70 ( 1.99X) TKL 300.4 246 eP :59:03.70 ( 1.14X) eS :36.80 ( 1.08X) GBTN 336.1 249 eP :06.90 (-0.03 ) eS :43.60 ( 0.34 ) BBG 349.7 233 eP :10.00 ( 1.28X) eS :47.40 ( 1.04X) ----- *VTSO OT= 07:58:17.31 LAT= 36.787N LON= 80.727W DEP= 10.5 KM MDB= 2.2 NO= 16, GAP= 182 DEG, RMS RES= 0.24 SEC, SDOT= 0.16 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.1 KM, AZ= -51 DEG; ERHMIN= 0.6 KM; ERZ= 1.7 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PUV 27.4 343 iPc 07:58:22.25 (-0.14 ) iS 07:58:26.00 ( 0.17 ) WMV 41.7 329 ePc :24.20 (-0.52 ) iS :29.77 (-0.02 ) BLA 54.4 30 eP? :26.74 (-0.02 ) eS :33.40 ( 0.11 ) NAV 58.9 354 eP? :27.86 ( 0.35 ) eS :34.32 (-0.25 ) PWV 67.2 335 eP? :29.40 ( 0.53 ) eS :36.96 ( 0.05 ) VWV 81.0 21 eP :30.79 (-0.34 ) eS :40.90 ( 0.13 ) GFM 122.5 233 eP :36.40 (-1.16X) eS :53.70 ( 2.02X) BENN 159.5 212 eP :43.10 (-0.05 ) eS :59:01.60 ( 0.39 ) BRBC 182.1 231 eP :46.45 (-0.25 ) eS :07.30 ( 0.08 ) TRYN 217.2 220 eP :51.60 (-0.39X) eS :17.90 ( 0.67X) SMTN 224.3 259 eP :52.60 (-0.45X) eS :20.00 ( 1.96X) RBNC 258.0 233 eP :57.59 (-0.34X) eS :27.88 ( 1.39X) CCVA 263.5 266 eP :59.60 ( 1.16X) eS :29.70 ( 2.32X) TKL 301.2 246 eP :59:03.70 ( 0.68X) eS :36.80 ( 1.58X) GBTN 337.0 249 eP :06.90 (-0.49X) eS :43.60 ( 0.91X) BBG 350.3 234 eP :10.00 ( 0.86X) eS :47.40 ( 1.73X) ***** 17 AUGUST 1986; 06:04 - WHITE HOLLOW, TENNESSEE ***** *TEIC OT= 06:04:10.19 LAT= 36.360N LON= 83.965W DEP= 23.8 KM MDB= 1. 9 NO= 23, GAP= 118 DEG, RMS= 0.18 SEC, SDOT= 0.09 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= -57 DEG; ERHMIN= 0.3 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CRTN 21.0 148 iPc 06:04:15.66 ( 0.21 ) iS 06:04:19.31 ( 0.03 ) CCVA 38.0 45 ePd :17.31 (-0.23 ) eS :22.82 (-0.09 ) HPK 48.7 171 eP+ :19.00 (-0.04 ) eS :26.30 ( 0.81X) ORT 58.6 212 iP- :20.44 (-0.03 ) SMTN 70.3 88 eP :22.40 ( 0.13 ) eS :31.40 ( 0.32 ) LMTN 72.5 136 eP :22.74 ( 0.17 ) eS :31.23 (-0.37 ) TKL 79.7 167 eP :23.50 (-0.14 ) eS :33.20 (-0.25 ) GBTN 80.1 196 eP :23.60 (-0.08 ) eS :33.80 ( 0.27 ) BRTN 98.5 90 eP+ :26.64 ( 0.14 ) iS :39.20 ( 0.80X) BHT 105.0 237 eS :40.25 ( 0.12 ) TQTN 116.1 216 eP+ :29.27 ( 0.14 ) eS :44.17 ( 1.21X) WSSR 125.0 164 eP :30.70 ( 0.10 ) eS :46.25 ( 0.75X) WMTN 153.3 217 eP :35.08 ( 0.26 ) eS :54.27 ( 1.47X) BBG 165.4 175 eP :36.70 (-0.06 ) eS :56.80 ( 0.66 ) SSKY 170.5 287 eP :37.60 ( 0.16 ) eS :57.50 ( 0.17 ) TRYN 197.1 127 eS :05:06.00 ( 1.53X) ***** 17 AUGUST 1986; 20:36 - SUMMERVILLE, SOUTH CAROLINA ***** *USGS Felt in the Summerville, South Carolina, area. *NEIC OT= 20:36:32.4 LAT= 32.909N LON= 80.171W DEP= 10.0 KM MD= 1.7 NO= 5 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MGS 3.3 115 iPc 20:36:34.42 ( 0.0 ) SVS 10.0 312 iPc :35.04 ( 0.1 ) HBF 20.0 278 iPd :36.17 (-0.2 ) eS 20:36:38.05 ( X) DRC 30.0 317 eP :38.08 ( 0.0 ) eS :42.37 ( X) TRK 43.4 57 iPd :40.13 (-0.3 ) ----- *USGS OT= 20:36:32.41 LAT= 32.908N LON= 80.175W DEP= 10.2 KM MDL= 1.7 NO= 14, GAP= 100 DEG, RMS RES= 0.16 SEC, SDOT= 0.09, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= 36 DEG; ERHMIN= 0.8 KM; ERZ= 1.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RGR 1.8 261 iPd 20:36:34.49 ( 0.11 ) eS 22:36:35.03 (-0.84X) eS :36.23 (-0.20 ) MGS 3.4 111 iPc :34.42 (-0.04 ) SVS 9.6 315 iPc :35.04 ( 0.01 ) eS :36.25 (-0.42X) WAS 11.3 234 iPd :35.22 (-0.01 ) eS :37.28 (-0.07X) eS :38.07 ( 0.15 ) HBF 19.2 278 iPd :36.17 ( 0.32 ) eS :38.05 (-0.41 ) ZIN 22.2 4 eP+ :36.82 ( 0.01 ) eS :39.78 ( 0.01 ) DRC 29.8 318 eP- :38.08 ( 0.09 ) eS :41.55 (-0.62X) eS :42.37 (-0.02 ) VEW 30.4 134 eP :39.19 ( 1.11X) eS :41.88 (-0.10 ) TRK 44.1 57 iPd :40.13 (-0.06 ) ***** 19 AUGUST 1986; 20:51 - ISOLINE, TENNESSEE ***** *GIT OT= 20:51:25.9 LAT= 36.262N LON= 85.005W DEP= 20.0 KM MDB= 2.9 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.6 KM, AZ= 37 DEG; ERHMIN= 0.4 KM; ELLIPSE AREA= 0.8 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BHT 46.3 173 P 20:51:35.32 ( 1.05 ) S 20:51:42.01 ( 1.64 ) GBTN 97.7 133 P :42.94 ( 0.58 ) S :55.41 ( 1.04 ) RCT 106.4 163 P :44.20 ( 0.45 ) ETT 115.2 154 P :45.73 ( 0.55 ) S :52:00.44 ( 1.18 ) CCVA 125.6 73 P :46.33 (-0.52 ) S :01.67 (-0.47 ) TKL 130.0 121 P :47.76 ( 0.19 ) S :03.70 ( 0.31 ) RHT 131.8 175 P :48.10 ( 0.25 ) DCT 144.2 158 P :50.10 ( 0.24 ) S :08.00 ( 0.64 ) RCG 146.1 192 P :50.06 (-0.11 ) S :07.32 (-0.57 ) SMTN 164.1 85 P :52.79 (-0.29 ) S :12.72 (-0.21 ) WSSR 169.6 130 P :54.00 ( 0.03 ) S :14.27 (-0.21 ) BBG 188.7 145 P :56.70 (-0.36 ) S :19.02 (-0.82 ) RBNC 209.2 119 P :59.97 (-0.41 ) S :25.03 (-0.55 ) OCA 225.0 216 S :28.40 (-1.62 ) HGA 235.2 199 P :52:03.00 (-1.59 ) S :30.50 (-2.38 ) BRBC 252.7 103 S :36.23 (-1.59 ) TRYN 273.5 114 P :09.20 (-1.61 ) ----- *TEIC Felt in Jamestown, TN, area *TEIC OT= 20:51:26.05 LAT= 36.291N LON= 85.020W DEP= 29.8 KM MDB= 2.9 NO= 30, GAP= 108 DEG, RMS= 0.15 SEC, SDOT= 0.08 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= 28 DEG; ERHMIN= 0.3 KM; ERZ= 1.8 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BHT 49.7 172 Pc 20:51:35.32 (-0.13 ) ORT 77.1 123 ePc :39.27 (-0.04 ) iS 20:51:49.08 ( 0.10 ) SSKY 89.0 309 iPc :41.24 ( 0.18 ) TQTN 90.0 163 ePc :41.07 (-0.13 ) iS :52.40 ( 0.14 ) GBTN 100.7 133 iP :42.70 (-0.11 ) iS :55.80 ( 0.75X) CRTN 106.5 95 ePc :43.55 (-0.15 ) HPK 110.4 111 eP :44.10 (-0.18 ) eS :57.70 ( 0.12 ) WMTN 115.8 178 ePc :44.93 (-0.16 ) ETT 118.6 154 iP :45.50 (-0.03 ) CCVA 126.2 74 eP :46.60 (-0.07 ) TKL 132.5 122 iP :47.80 ( 0.18 ) iS :52:03.80 ( 0.44 ) RHT 135.1 175 P :48.10 ( 0.09 ) S :05.50 ( 1.46X) DCT 147.6 158 P :50.10 ( 0.18 ) S :08.00 ( 0.66 ) RCG 149.0 192 iPd :50.05 (-0.07 ) eS :07.50 (-0.20 ) LMTN 151.9 107 eP :50.42 (-0.16 ) BGKY 156.1 301 ePc :51.23 ( 0.05 ) iS :10.71 ( 1.19X) SOKY 160.9 329 P :50.90 (-0.99X) S :11.30 ( 0.55X) SMTN 165.3 86 iP :52.60 (-0.04 ) iS :12.80 ( 0.75X) WSSR 172.1 130 iPc :53.85 ( 0.12 ) eS :14.20 ( 0.26 ) L6KY 182.3 6 P :54.95 (-0.21 ) S :17.90 ( 1.49X) LKGA 189.5 193 eP- :56.40 ( 0.12 ) BBG 191.6 145 iP :56.60 (-0.03 ) iS :18.80 (-0.15 ) BRTN 193.4 87 eP :56.70 (-0.05 ) RBNC 211.0 119 iPc :59.80 ( 0.74X) SHTN 211.6 245 ePc :59.25 ( 0.31X) eS :24.68 ( 1.72X) MSAL 219.4 224 eP :52:00.35 ( 0.47X) eS :27.57 ( 2.99X) OCA 226.1 215 eS :28.40 ( 2.41X) SMKY 237.2 303 P :04.00 ( 1.98X) S :32.70 ( 4.41X) HGA 237.5 199 P :03.00 ( 0.89X) eS :30.50 ( 2.06X) TRYN 275.3 114 eP :09.20 ( 2.39X) eS :38.00 ( 1.44X) GFM 289.7 93 eP :12.40 ( 3.74X) eS :45.00 ( 5.23X) PWLA 311.7 243 eP :11.70 ( 0.54X) eS :48.80 ( 4.71X) ***** 29 AUGUST 1986; 07:44 - NORTHEAST ALABAMA ***** TEIC location for informational purposes only *TEIC OT= 07:44:38.20 LAT= 34.290N LON= 85.484W DEP= 18.5 KM MDB= 1. 4 NO= 9, GAP= 204 DEG, RMS= 0.19 SEC, SDOT= 0.31 SEC, Q= D, SQD= D/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 3.1 KM, AZ= -29 DEG; ERHMIN= 0.7 KM; ERZ= 2.4 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVG 19.4 60 P 07:44:43.00 ( 0.32 ) S 07:44:45.80 (-0.16 ) HGA 33.5 264 P :44.50 (-0.07 ) LKGA 37.0 2 ePd :43.72 (-1.38X) iS :47.26 (-2.88X) RCG 77.0 9 P :51.15 ( 0.02 ) eS :45:01.75 ( 1.18X) GMG 98.0 49 P :54.15 (-0.25 ) eS :06.20 (-0.02 ) RHT 103.4 32 P :56.00 ( 0.86X) S :07.70 ( 0.19 ) DCT 129.3 49 S :14.20 (-0.19 ) ETT 148.6 39 eS :19.40 (-0.12 ) BBG 166.6 67 eS :25.00 ( 0.59X) GBTN 191.9 37 eS :32.10 ( 1.15X) TKL 217.8 45 eS :39.00 ( 1.20X) ----- *GIT OT= 07:44:38.4 LAT= 34.302N LON= 85.486W DEP= 18.7 KM MDB= 1.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.9 KM, AZ= -48 DEG; ERHMIN= 0.3 KM; ELLIPSE AREA= 0.9 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVG 18.8 64 P 07:44:43.00 ( 0.25 ) S 07:44:45.80 (-0.12 ) HGA 33.5 262 P :44.50 (-0.18 ) RCG 75.6 10 P :51.15 ( 0.10 ) GMG 97.1 50 P :54.15 (-0.26 ) S :45:06.20 ( 0.09 ) RHT 102.1 33 P :56.00 ( 0.80 ) DCT 128.1 49 S :14.20 (-0.36 ) ETT 147.2 40 S :19.40 (-0.34 ) ***** 29 AUGUST 1986; 07:49 - NORTHEAST ALABAMA ***** TEIC location for informational purposes only *TEIC OT= 07:49:03.49 LAT= 34.389N LON= 85.538W DEP= 10.3 KM MDB= 1.5 NO= 22, GAP= 150 DEG, RMS= 0.15 SEC, SDOT= 0.05 SEC, Q= B, SQD= A/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -16 DEG; ERHMIN= 0.3 KM; ERZ= 0.5 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVG 21.8 93 P 07:49:08.00 ( 0.36 ) S 07:49:10.50 (-0.17 ) LKGA 26.7 13 iPd :08.52 ( 0.07 ) iS :12.02 (-0.05 ) HGA 31.7 243 P :09.20 (-0.02 ) RCG 67.3 15 eS :22.50 (-0.99X) GMG 95.4 56 iPc :19.50 (-0.04 ) eS :31.10 (-0.16 ) RHT 97.3 38 P :20.50 ( 0.75X) S :31.80 ( 0.17 ) WMTN 108.4 28 eP :21.49 ( 0.02 ) eS :34.61 ( 0.01 ) MSAL 115.8 296 eS :36.37 (-0.18 ) DCT 126.3 54 P :24.20 (-0.02 ) S :38.50 (-0.86X) ETT 143.6 43 eP :26.70 (-0.18 ) eS :44.20 ( 0.25 ) TQTN 145.4 30 ePc :27.14 ( 0.01 ) eS :44.38 ( 0.00 ) BBG 167.3 71 eP :30.40 (-0.17 ) eS :50.50 ( 0.16 ) BHT 170.6 18 eS :51.70 ( 0.56X) GBTN 186.4 40 eS :55.50 ( 0.24 ) SHTN 187.8 310 eS :55.30 (-0.31 ) WSSR 204.6 61 eS :50:00.00 (-0.25 ) TKL 213.9 48 eS :02.50 (-0.04 ) ----- *GIT OT= 07:49:04.4 LAT= 34.354N LON= 85.459W DEP= 16.2 KM MDB= 1.8 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.9 KM, AZ= -51 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.7 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVG 14.6 80 P 07:49:08.00 ( 0.06 ) S 07:49:10.50 (-0.05 ) GMG 91.5 52 P :19.50 ( 0.04 ) S :31.10 ( 0.58 ) RHT 96.0 33 P :20.50 ( 0.34 ) S :31.80 ( 0.07 ) DCT 122.5 51 P :24.20 (-0.17 ) S :39.20 ( 0.18 ) ETT 141.2 40 P :26.70 (-0.62 ) BBG 161.3 69 P :30.40 (-0.07 ) ***** 1 SEPTEMBER 1986; 23:47 - NIOTA, TENNESSEE ***** *TEIC OT= 23:47:07.29 LAT= 35.519N LON= 84.517W DEP= 14.8 KM MDB= 0.7 NO= 11, GAP= 151 DEG, RMS= 0.19 SEC, SDOT= 0.13 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= -38 DEG; ERHMIN= 0.5 KM; ERZ= 1.9 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TQTN 18.9 269 eP- 23:47:11.75 ( 0.37 ) eS 23:47:14.23 (-0.14 ) ETT 22.2 165 iPd :11.90 ( 0.03 ) eS :15.10 (-0.12 ) GBTN 32.2 60 eP :13.10 (-0.22 ) eS :17.90 ( 0.18 ) ORT 47.4 24 eS :21.66 (-0.09 ) WMTN 51.2 234 eS :22.74 (-0.02 ) TKL 69.1 77 eS :27.10 (-0.40 ) BBG 96.2 138 eP :23.50 ( 0.28 ) eS :35.20 ( 0.35 ) ***** 3 SEPTEMBER 1986; 17:35 - FACKLER, ALABAMA ***** *GIT OT= 17:35:48.3 LAT= 34.741N LON= 85.997W DEP= 17.1 KM MDB= 1.8 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= 81 DEG; ERHMIN= 0.4 KM; ELLIPSE AREA= 0.4 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HGA 55.1 165 P 17:35:57.00 (-0.68 ) S 17:36:04.80 ( 0.25 ) TVG 75.5 122 P :36:01.10 ( 0.23 ) S :09.80 (-0.28 ) RHT 108.3 70 P :06.20 ( 0.17 ) S :19.00 (-0.02 ) TDA 133.0 181 P :10.50 ( 0.57 ) DCT 148.0 76 P :12.40 ( 0.11 ) S :29.60 (-0.27 ) ***** 17 SEPTEMBER 1986; 08:32 - ESTELLE, GEORGIA ***** *TEIC OT= 08:32:09.72 LAT= 34.725N LON= 85.270W DEP= 10.3 KM MDB= 1.8 NO= 38, GAP= 102 DEG, RMS= 0.27 SEC, SDOT= 0.05 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -56 DEG; ERHMIN= 0.3 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LKGA 21.7 239 iPd 08:32:13.99 ( 0.11 ) iS 08:32:16.80 (-0.11 ) RCG 28.7 346 iPc :15.19 ( 0.22 ) iS :18.86 ( 0.05 ) TVG 38.7 184 P :16.90 ( 0.34 ) S :21.50 (-0.05 ) RHT 52.9 42 P :19.00 ( 0.11 ) S :25.80 ( 0.21 ) CDG 56.3 103 P S :27.00 ( 0.42 ) GMG 57.0 74 eP- :19.70 ( 0.08 ) eS :26.25 (-0.60 ) WMTN 64.1 25 eP- :20.54 (-0.20 ) iS :28.36 (-0.43 ) HGA 73.8 226 P :21.90 (-0.45 ) PDTN 80.7 319 ePc :23.17 (-0.28 ) eS :34.12 ( 0.65 ) ETT 99.9 48 eP- :26.20 (-0.23 ) eS :38.30 (-0.32 ) TQTN 100.9 29 eP :26.44 (-0.10 ) eS :40.01 ( 1.19X) CBT 119.0 40 P :29.60 ( 0.27 ) S :44.50 ( 0.85 ) BHT 128.0 13 eS :46.60 ( 0.51 ) MSAL 129.2 276 eP :30.78 (-0.09 ) eS :46.07 (-0.24 ) BBG 134.6 83 eP :31.80 ( 0.00 ) eS :47.30 (-0.61 ) GBTN 142.2 42 eP :32.90 ( 0.02 ) eS :50.00 ( 0.22 ) ABTN 149.7 330 eP :34.07 ( 0.04 ) eS :52.94 ( 1.17X) ORT 158.1 33 eP :35.70 ( 0.39 ) eS :55.12 ( 1.13X) ANTN 160.6 1 eP :35.90 ( 0.18 ) eS :54.70 ( 0.00 ) WSSR 166.2 68 ePc :36.75 ( 0.10 ) eS :56.10 (-0.21 ) TKL 171.2 52 eP :37.80 ( 0.49 ) eS :57.90 ( 0.45 ) HPK 183.8 43 eP :40.70 ( 1.46X) eS :33:03.60 ( 2.81X) SHTN 188.2 296 eP :39.83 (-0.08 ) eS :02.21 ( 0.26 ) CRTN 208.9 38 eP- :43.60 ( 0.50X) LMTN 212.9 52 eP :43.35 (-0.38X) eS :09.10 ( 0.54X) TSA 232.6 226 P S :16.00 ( 2.29X) SSKY 234.6 349 eP :47.39 ( 0.37X) eS :15.72 ( 1.47X) SMTN 263.9 45 eP :52.00 ( 1.04X) eS :25.00 ( 3.94X) ----- *GIT OT= 08:32:09.9 LAT= 34.720N LON= 85.294W DEP= 17.8 KM MDB= 1.9 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.6 KM, AZ= -36 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.4 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TVG 38.1 181 P 08:32:16.90 ( 0.20 ) S 08:32:21.50 (-0.21 ) RHT 54.6 43 P :19.00 (-0.20 ) S :25.80 (-0.24 ) CDG 58.8 102 S :27.00 (-0.15 ) HGA 72.0 225 P :21.90 ( 0.00 ) CBT 120.5 41 P :29.60 ( 0.08 ) S :44.50 ( 0.57 ) ***** 17 SEPTEMBER 1986; 09:33 - SUMMERVILLE, SOUTH CAROLINA ***** *NEIC Felt (IV) at Summerville, SC. Also felt at Middleton Gardens, SC. *USGS Felt in Summerville, South Carolina, area. *NEIC OT= 09:33:49.5 LAT= 32.928N LON= 80.152W DEP= 7.7 KM MD= 2.6 NO= 5 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) ZIN 20.0 358 P 09:33:54.00 ( 0.7 ) HBF 21.1 272 P :53.10 (-0.4 ) SGS 44.5 311 P :56.50 (-1.1 ) LHS 182.4 341 eP :34:17.80 (-0.9 ) PRM 242.4 303 eP :25.30 (-1.2 ) ----- *USGS OT= 09:33:49.52 LAT= 32.931N LON= 80.159W DEP= 6.7 KM MDL= 2.6 NO= 12, GAP= 150 DEG, RMS RES= 0.24 SEC, SDOT= 0.19, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.8 KM, AZ= -40 DEG; ERHMIN= 1.1 KM; ERZ= 4.3 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RGR 4.3 230 iPd 09:33:51.00 (-0.12 ) BCS 10.6 58 iPd :51.87 (-0.05 ) eS 09:33:53.61 ( 0.21 ) ZIN 19.7 360 iPd :53.50 ( 0.16 ) eS :55.70 (-0.15X) HBF 20.5 271 iPd :53.00 ( 0.02 ) eS :55.23 (-0.36 ) HWD 24.2 209 eP+ :54.30 ( 0.22 ) eS :58.17 ( 0.09 ) PBS 39.9 346 eP :56.79 ( 0.09 ) eS :34:02.21 ( 0.50X) TRK 41.5 59 iPd :56.42 (-0.54 ) SGS 44.0 311 eP+ :57.65 ( 0.26 ) VRN 74.1 279 iPc :34:02.33 ( 0.17 ) eS :11.56 ( 0.25X) OSB 93.6 317 eP :01.99 (-3.17X) eS :16.69 (-0.20X) MTT 165.0 303 eP :16.06 (-0.28X) eS :36.75 ( 0.29X) JSC 181.1 326 eP :18.95 ( 0.33X) LHS 182.0 341 iPd :17.71 (-1.15X) ***** 30 SEPTEMBER 1986; 05:29 - FELDSPAR, VIRGINIA ***** *VTSO OT= 05:29:33.13 LAT= 37.792N LON= 77.698W DEP= 11.3 KM MDB= 1.6 NO= 7, GAP= 279 DEG, RMS RES= 0.10 SEC, SDOT= 0.28 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 2.9 KM, AZ= -42 DEG; ERHMIN= 0.7 KM; ERZ= 6.5 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NA5 24.6 352 eP 05:29:37.64 ( 0.07 ) eS 05:29:40.73 (-0.09 ) NA12 26.6 323 iP :38.01 ( 0.13 ) iS :41.46 ( 0.11 ) GHV 36.1 271 eP :39.24 (-0.10 ) eS :43.85 (-0.03 ) NA2 37.5 353 eS :44.12 (-0.13 ) ***** 3 OCTOBER 1986; 10:21 - CENTRAL NORTH CAROLINA ***** *TEIC OT= 10:21:49.45 LAT= 35.805N LON= 80.456W DEP= 0.2FXD KM MDB= 2.5 NO= 17, GAP= 260 DEG, RMS= 0.25 SEC, SDOT= 0.25 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 2.1 KM, AZ= -81 DEG; ERHMIN= 0.7 KM; ERZ= 3.6 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PKNC 68.8 293 eP 10:22:01.50 (-0.10 ) eS 10:22:09.88 (-0.58 ) BENN 112.3 257 eP :08.85 ( 0.05 ) PLVA 114.7 327 eP :09.00 (-0.22 ) eS :24.00 ( 0.34 ) GFM 126.5 286 eP :11.20 ( 0.09 ) eS :27.00 ( 0.08 ) BLA 156.1 1 eS :33.00 (-1.58X) BRBC 165.7 268 eP :17.61 ( 0.49 ) NAV 170.5 350 eP :17.40 (-0.34 ) eS :37.20 (-1.20X) TRYN 172.9 250 eP :18.10 (-0.05 ) eS :39.20 ( 0.11 ) RICH 213.8 274 eP :24.45 ( 0.04 ) RBNC 234.6 259 eP :28.00 ( 0.32 ) SMTN 253.7 285 eP :29.70 (-0.80 ) eS :59.50 (-0.97X) TKL 300.6 268 eP :35.90 (-0.43 ) BBG 322.0 252 eP :39.80 ( 0.72 ) eS :23:15.80 ( 0.50 ) ***** 17 OCTOBER 1986; 22:03 - TALLADEGA, ALABAMA ***** *GIT OT= 22:03:20.6 LAT= 33.521N LON= 86.019W DEP= 9.2 KM** MDB= 1.7 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -34 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TDA 2.4 346 P 22:03:22.10 (-0.05 ) S 22:03:23.20 (-0.11 ) HGA 83.5 11 P :34.40 ( 0.03 ) S :44.10 (-0.38 ) HVA 89.2 309 P :35.10 (-0.18 ) S :46.20 ( 0.14 ) TSA 102.0 253 P :37.50 ( 0.15 ) S :50.00 ( 0.34 ) RHT 201.4 31 P :53.30 ( 0.14 ) S :04:17.00 (-0.05 ) DCT 224.1 41 P :57.20 ( 0.51 ) CBT 266.7 33 S :34.40 (-0.11 ) **Depth computation biased by station TDA (depth error= +1KM -8KM) ----- *TEIC OT= 22:03:20.68 LAT= 33.546N LON= 86.041W DEP= 7.9 KM MDB= 2.3 NO= 18, GAP= 144 DEG, RMS= 0.20 SEC, SDOT= 0.09 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.7 KM, AZ= -39 DEG; ERHMIN= 0.5 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TDA 1.6 107 eP 22:03:22.10 (-0.01 ) eS 22:03:23.20 ( 0.04 ) HGA 81.2 13 eP :34.40 (-0.10 ) eS :44.10 (-0.49 ) HVA 86.0 309 eP :35.10 (-0.17 ) eS :46.20 ( 0.27 ) TSA 100.8 252 eP :37.50 (-0.13 ) eS :50.00 ( 0.00 ) RCG 170.9 22 eS :04:09.10 ( 0.49 ) GMG 193.1 40 eS :14.60 ( 0.01 ) RHT 200.6 32 eP :53.30 ( 0.37 ) eS :17.00 ( 0.53 ) DCT 224.2 41 eP :57.20 ( 0.64 ) PWLA 245.0 311 eP :58.50 (-1.21X) eS :27.00 (-1.20X) ETT 245.4 36 eP :04:00.00 ( 0.19 ) eS :28.20 (-0.18 ) BBG 252.8 54 eP :00.90 ( 0.00 ) eS :31.00 ( 0.74 ) CBT 266.5 33 eS :34.40 ( 1.48X) GBTN 288.9 35 eS :39.50 ( 1.84X) TKL 313.2 41 eS :42.20 (-0.61 ) ***** 18 OCTOBER 1986; 08:31 - ROCK HILL, SOUTH CAROLINA ***** *TEIC OT= 08:31:38.80 LAT= 34.946N LON= 81.173W DEP= 22.7 KM MDB= 2.9 NO= 20, GAP= 147 DEG, RMS= 0.26 SEC, SDOT= 0.23 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.2 KM, AZ= 68 DEG; ERHMIN= 0.5 KM; ERZ= 6.3 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 61.6 147 ePc 08:31:49.54 ( 0.09 ) eS 08:31:57.20 (-0.03 ) MR07 65.3 192 eP- :50.00 (-0.01 ) eS :57.80 (-0.39 ) MR01 69.0 189 ePd :50.70 ( 0.13 ) eS :59.20 ( 0.05 ) MR10 69.2 193 eP- :50.65 ( 0.05 ) eS :58.20 (-1.02X) JSC 74.3 186 ePc :51.45 ( 0.07 ) eS :58.80 (-1.76X) BENN 81.9 327 ePd :52.19 (-0.39 ) eS :32:02.92 ( 0.27 ) TRYN 104.2 290 iP- :55.50 (-0.47 ) eS :09.00 ( 0.50 ) BRBC 134.2 311 eP+ :32:00.60 (-0.03 ) eS :17.25 ( 0.68 ) PRM 145.3 229 eP- :03.10 ( 0.93X) eS :20.20 ( 0.97X) BG3 160.7 272 eP+ :05.50 ( 0.97X) LPM 169.2 272 eP+ :06.87 ( 1.05X) RBNC 171.4 286 eP+ :06.60 ( 0.27 ) eS :27.78 ( 1.36X) COW 178.6 166 eP+ :07.68 ( 0.43 ) eS :29.20 ( 1.18X) RICH 184.4 306 iP- :09.05 ( 0.81 ) eS :29.68 (-0.05 ) PLVA 190.9 0 iP :09.70 ( 0.43 ) eS :31.50 (-0.01 ) WSSR 222.4 280 ePd :14.92 ( 1.12X) eS :41.30 ( 1.95X) BBG 241.3 269 eP :17.40 ( 1.30X) eS :46.10 ( 2.76X) SMTN 241.9 312 eP :16.80 ( 0.69X) eS :43.40 ( 0.06X) TKL 249.5 289 eP :18.00 ( 1.02X) eS :47.21 ( 2.36X) GBTN 287.7 287 eP :23.10 ( 1.46X) ETT 302.1 279 eP :24.50 ( 1.05X) eS :59.00 ( 2.96X) ----- *USC OT= 08:31:39.3 LAT= 34.954N LON= 81.195W DEP= 0.8 KM MDL= 2.7 NO= 22, GAP= 77 DEG, RMS RES= 0.10 SEC, Q= C, SQD= A/D ERROR ESTIMATES (HYPO71) (ERH= 0.3 KM; ERZ= 0.7 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 63.5 146 ePu 08:31:49.54 ( 0.00 ) S 08:31:57.20 (-0.04 ) MR07 65.8 190 P- :50.00 ( 0.09 ) S :57.80 (-0.09 ) MR01 69.6 188 ePd :50.60 ( 0.07 ) S :59.20 ( 0.23 ) MR10 69.7 191 P- :50.65 ( 0.10 ) S :58.80 (-0.20 ) JSC 75.0 185 ePu :51.45 ( 0.06 ) S :32:00.20 (-0.29 ) BENN 80.0 328 iPd :52.15 (-0.05 ) S :01.80 (-0.09 ) TRYN 101.7 290 iPd :55.62 (-0.09 ) S :08.00 (-0.04 ) BRBC 132.0 311 eP+ :32:00.70 ( 0.11 ) PRM 144.2 228 eP- :03.06 ( 0.49X) S :20.20 ( 0.16 ) RBNC 169.1 285 eP+ :06.70 ( 0.13 ) S :27.00 (-0.05 ) PLVA 190.0 1 iPu :09.50 ( 0.09 ) S :31.70 (-0.32 ) WSSR 220.2 279 S :38.50 (-0.01 ) CPL4 222.8 69 S :39.10 ( 0.03 ) ***** 26 OCTOBER 1986; 08:19 - KNOXVILLE, TENNESSEE ***** *TEIC OT= 08:19:33.34 LAT= 35.903N LON= 83.917W DEP= 18.9 KM MDB= 1.2 NO= 11, GAP= 146 DEG, RMS= 0.19 SEC, SDOT= 0.21 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= -65 DEG; ERHMIN= 0.5 KM; ERZ= 2.3 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HPK 4.3 53 iP 08:19:36.70 ( 0.08 ) TKL 30.1 154 ePd :39.50 ( 0.24 ) eS 08:19:43.51 (-0.08 ) CRTN 33.7 12 ePd :39.87 ( 0.09 ) :44.30 (-0.19 ) ORT 35.0 271 eS :45.18 ( 0.39 ) GBTN 37.3 225 eP :40.20 (-0.09 ) eS :45.10 (-0.26 ) LMTN 45.9 92 eS :47.61 ( 0.00 ) ETT 80.4 217 eS :56.40 (-0.25 ) BBG 114.5 175 eS :20:06.10 ( 0.32 ) ***** 1 NOVEMBER 1986; 08:59 - INMAN, SOUTH CAROLINA ***** *TEIC OT= 08:59:57.49 LAT= 35.001N LON= 82.159W DEP= 4.0 KM MDB= 2.2 NO= 25, GAP= 77 DEG, RMS= 0.28 SEC, SDOT= 0.14 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.7 KM, AZ= -39 DEG; ERHMIN= 0.4 KM; ERZ= 1.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TRYN 30.6 345 iP 09:00:02.90 (-0.08 ) iS 09:00:07.10 ( 0.10 ) BG3 70.5 270 eP :09.80 ( 0.17 ) SMT 74.5 264 eP :10.54 ( 0.25 ) eS :19.29 (-0.35 ) BENN 77.3 36 eP :10.30 (-0.50 ) is :20.79 ( 0.28 ) LPM 79.0 269 eP :11.27 ( 0.24 ) BRBC 82.7 352 eP :11.30 (-0.47X) eS :21.00 (-1.19X) RBNC 85.1 298 eP :11.60 (-0.54 ) eS :21.60 (-1.24X) PRM 103.5 190 eP :15.05 (-0.04 ) eS :27.60 (-0.35 ) JSC 115.1 134 eP :17.05 ( 0.15 ) eS :31.00 (-0.08 ) RICH 118.2 330 eP :17.81 ( 0.35 ) eS :31.60 (-0.43 ) WSSR 132.9 284 eP :20.00 ( 0.25 ) LHS 136.6 115 eP :20.70 ( 0.51 ) PKNC 147.3 38 eP :21.55 (-0.35 ) eS :40.00 ( 0.27 ) BBG 151.6 265 iP :22.80 ( 0.20 ) eS :41.20 ( 0.26 ) SLTN 160.1 1 eP :23.81 ( 0.01 ) BRTN 163.5 337 eS :44.66 ( 0.66X) TKL 163.9 297 eP :25.10 ( 0.69 ) eS :43.74 (-0.32 ) SMTN 179.0 329 eP :27.40 ( 0.64 ) eS :50.00 ( 1.87X) GBTN 200.6 292 eP :30.50 ( 0.48X) eS :53.90 ( 0.13X) PLVA 205.6 26 eP :31.00 ( 0.11X) eS :56.00 ( 0.73X) ETT 212.3 280 iP :32.00 ( 0.17X) eS :57.00 ( 0.10X) ORT 219.3 298 eS :58.90 ( 0.16X) ----- *USC OT= 08:59:58.3 LAT= 35.008N LON= 82.160W DEP= 1.0 KM MDL= 2.2 NO= 17, GAP= 77 DEG, RMS RES= 0.20 SEC, Q= C, SQD= C/C ERROR ESTIMATES (HYPO71) (ERH= 0.6 KM; ERZ= 218.6 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TRYN 29.8 345 iP 09:00:02.90 (-0.27 ) S 09:00:07.10 ( 0.30X) BG3 70.5 269 iPd :09.80 ( 0.06 ) SMT 74.6 263 iPd :10.54 ( 0.15 ) S :19.29 (-0.14 ) BENN 76.7 36 eP :10.30 (-0.44 ) LPM 79.0 268 eP- :11.27 ( 0.16 ) RBNC 84.7 297 eP :11.55 (-0.47 ) S :21.60 (-0.68X) PRM 104.2 190 iP :15.05 (-0.12 ) S :27.60 (-0.20 ) MR01 109.0 133 iP :16.20 ( 0.25 ) S :30.00 ( 0.84X) JSC 115.4 134 iP+ :17.05 ( 0.07 ) S :31.00 ( 0.03 ) RICH 117.6 329 eP :18.42 ( 1.08X) S :31.60 ( 0.01 ) WSSR 132.8 283 eP :20.00 ( 0.22 ) LHS 137.0 115 P :20.70 ( 0.24 ) PKNC 146.8 38 eP :21.55 (-0.49 ) S :40.00 ( 0.19 ) ***** 2 NOVEMBER 1986; 03:44 - DUTCH VALLEY, TENNESSEE ***** *TEIC OT= 03:44:40.15 LAT= 36.294N LON= 83.515W DEP= 12.5 KM MDB= 1.3 NO= 16, GAP= 181 DEG, RMS= 0.14 SEC, SDOT= 0.07 SEC, Q= C, SQD= A/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= -20 DEG; ERHMIN= 0.2 KM; ERZ= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CRTN 31.1 250 eP 03:44:45.90 ( 0.00 ) eS 03:44:50.11 ( 0.01 ) SMTN 31.4 72 eP :46.00 ( 0.03 ) eS :50.00 (-0.22 ) LMTN 46.0 168 ePd :48.17 (-0.12 ) eS :54.31 ( 0.08 ) BRTN 58.5 83 eS :57.86 ( 0.14 ) TKL 74.4 198 eP :52.90 ( 0.12 ) eS :45:01.80 (-0.20 ) RICH 75.2 123 eP :53.19 ( 0.23 ) eS :02.00 (-0.32 ) GBTN 93.8 222 eP :55.70 (-0.05 ) eS :07.00 (-0.14 ) WSSR 112.9 183 eS :13.25 ( 0.88X) RBNC 114.4 155 ep :59.15 ( 0.10 ) ETT 137.0 219 eP :45:02.50 ( 0.11 ) eS :19.30 ( 0.68 ) BBG 159.8 190 eS :25.90 ( 1.10X) ***** 2 NOVEMBER 1986; 17:04 - CONCORD, TENNESSEE ***** *TEIC OT= 17:04:47.12 LAT= 35.761N LON= 84.191W DEP= 11.7 KM MDB= 1.5 NO= 27, GAP= 74 DEG, RMS= 0.20 SEC, SDOT= 0.06 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -80 DEG; ERHMIN= 0.3 KM; ERZ= 0.5 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 10.7 190 iP 17:04:49.90 ( 0.03 ) iS 17:04:52.00 ( 0.12 ) ORT 19.4 328 iPc :51.17 ( 0.15 ) iS :53.73 (-0.14 ) CBT 32.2 220 iP :53.05 ( 0.07 ) iS :57.20 (-0.07 ) TKL 39.5 107 eP :54.40 ( 0.26 ) iS :59.18 (-0.09 ) TLT 51.7 189 eP :57.25 ( 1.11X) iS :05:02.50 (-0.22 ) ETT 53.9 206 eP :56.20 (-0.31 ) iS :03.10 (-0.26 ) TQTN 55.5 241 eP :57.12 ( 0.37 ) eS :03.90 ( 0.11 ) CRTN 58.0 33 eP :57.17 (-0.01 ) RCT 62.8 223 eP :57.95 ( 0.00 ) iS :06.00 ( 0.15 ) WSSR 77.3 134 eP :05:00.35 ( 0.02 ) eS :11.25 ( 1.27X) DCT 81.1 195 eP :01.05 ( 0.20 ) iS :10.85 (-0.02 ) ONTN 83.1 344 eP :00.73 (-0.43 ) eS :10.83 (-0.58 ) WMTN 91.0 231 eP :02.90 ( 0.56X) eS :13.95 ( 0.50 ) ANTN 104.3 296 eP :04.37 (-0.03 ) eS :17.60 ( 0.58 ) BBG 104.3 161 eS :17.00 (-0.15 ) GMG 108.8 204 eS :18.70 ( 0.41 ) SMTN 114.1 53 eP :06.90 ( 0.99X) eS :20.10 ( 0.46 ) ----- *GIT OT= 17:04:47.3 LAT= 35.769N LON= 84.196W DEP= 11.2 KM MDB= 1.4 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.2 KM, AZ= -16 DEG; ERHMIN= 0.1 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 11.5 187 P 17:04:49.90 (-0.08 ) S 17:04:52.00 ( 0.08 ) ORT 20.0 329 P :51.17 ( 0.06 ) S :53.73 (-0.16 ) CBT 32.6 219 P :53.05 ( 0.04 ) S :57.15 (-0.03 ) TKL 40.1 108 P :54.40 ( 0.22 ) S :59.18 (-0.03 ) TLT 52.6 189 S :05:02.50 (-0.13 ) ETT 54.5 206 P :56.20 (-0.27 ) S :03.10 (-0.07 ) RCT 63.3 222 P :57.95 ( 0.08 ) S :06.00 ( 0.40 ) DCT 81.9 194 P :05:01.05 ( 0.19 ) S :10.85 ( 0.07 ) BBG 105.4 161 S :17.00 (-0.30 ) ***** 3 NOVEMBER 1986; 05:14 - CUNNINGHAM, VIRGINIA ***** *VTSO OT= 05:14:40.84 LAT= 37.913N LON= 78.359W DEP= 2.3 FXD KM MDB= 0.8 NO= 8, GAP= 190 DEG, RMS RES= 0.12 SEC, SDOT= 0.20 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.8 KM, AZ= 40 DEG; ERHMIN= 0.5 KM; ERZ= 6.3 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CVL 11.7 310 iPc 05:14:42.75 (-0.05 ) iS 05:14:44.20 (-0.03 ) GHV 25.8 121 iPd :45.20 ( 0.11 ) iS :48.00 (-0.20 ) NA12 42.9 79 eP :48.00 ( 0.11 ) eS :53.10 ( 0.06 ) NA2 58.8 66 eP :50.60 ( 0.10 ) eS :57.35 (-0.20 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 05:14:43.7 Sg 05:14:45.0 ***** 3 NOVEMBER 1986; 20:00 - NORTH CENTRAL GEORGIA ***** *TEIC OT= 20:00:15.83 LAT= 33.412N LON= 83.253W DEP= 9.6 KM MDB= 2.4 NO= 11, GAP= 207 DEG, RMS= 0.16 SEC, SDOT= 0.33 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.8 KM, AZ= -63 DEG; ERHMIN= 0.5 KM; ERZ= 5.3 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ATL 83.3 238 eP 20:00:30.00 ( 0.00 ) iS 20:00:43.45 ( 3.11X) BBG 170.1 343 eP :43.20 (-0.19 ) eS :01:01.10 (-2.41X) GMG 207.3 321 eP :48.90 (-0.16 ) eS :13.30 (-0.02 ) WSSR 209.1 352 iPd :49.70 ( 0.33 ) eS :17.70 ( 3.85X) DCT 211.5 330 eP :50.00 ( 0.35 ) eS :18.00 ( 3.66X) RBNC 217.1 6 iPd :50.75 ( 0.12 ) iS :17.30 ( 1.26X) TRYN 225.7 24 iP :51.50 (-0.36 ) eS :18.10 (-0.06 ) ETT 239.4 333 eP :52.80 (-1.13X) iS :23.00 ( 1.26X) TKL 253.7 349 eS :25.00 (-0.03 ) HGA 257.8 292 eS :21.00 (-4.90X) TDA 258.0 274 eS :25.00 (-0.91X) GBTN 265.0 341 eS :30.50 ( 3.07X) BENN 280.0 31 eP :58.50 (-0.62 ) eS :34.23 ( 3.51X) ***** 6 NOVEMBER 1986; 03:26 - FOUNT, KENTUCKY ***** *TEIC OT= 03:26:46.38 LAT= 36.972N LON= 83.793W DEP= 14.9 KM MDB= 2.0 NO= 29, GAP= 151 DEG, RMS= 0.22 SEC, SDOT= 0.13 SEC, Q= C, SQD= C/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.8 KM, AZ= -9 DEG; ERHMIN= 0.5 KM; ERZ= 36.8 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CCVA 42.5 165 iPc 03:26:53.92 (-0.07 ) eS 03:26:59.58 ( 0.03 ) ONTN 79.6 227 eP :59.35 (-0.35 ) eS :27:09.78 ( 0.36 ) SMTN 85.2 140 eP- :27:00.60 ( 0.03 ) eS :11.00 ( 0.07 ) CRTN 85.8 183 eP :00.25 (-0.38 ) eS :11.03 ( 0.00 ) BRTN 107.2 129 ePc :04.19 ( 0.26 ) eS :17.90 ( 1.16X) LMTN 125.1 164 ePc :06.54 (-0.12 ) eS :21.10 (-0.36X) ORT 126.5 201 eS :22.08 ( 0.28 ) L6KY 139.6 320 eP :09.50 ( 0.67 ) eS :26.50 ( 1.29X) TKL 145.8 179 eP :09.66 (-0.15 ) eS :26.83 (-0.08 ) RICH 145.8 143 iPd :10.07 ( 0.20 ) eS :28.00 ( 0.98X) GBTN 149.6 195 eP :10.50 ( 0.10 ) eS :28.00 ( 0.07 ) ANTN 156.4 236 eP :11.02 (-0.44 ) eS :30.10 ( 0.34 ) SLTN 160.5 111 eP :12.78 ( 0.74 ) eS :32.72 ( 1.94X) PKKY 170.3 23 eP :14.50 ( 0.96X) eS :35.20 ( 1.84X) SSKY 179.3 264 eP :14.83 (-0.11 ) eS :36.53 ( 0.74X) TQTN 182.0 208 eS :36.50 ( 0.01 ) WSSR 188.9 174 eP :16.40 (-0.11 ) eS :38.93 ( 0.43 ) ETT 192.1 198 eP :16.10 (-0.82 ) eS :39.00 (-0.21 ) BRBC 192.3 135 eP :17.52 ( 0.44 ) eS :40.25 ( 0.75 ) RBNC 193.3 158 iPc :17.53 ( 0.31 ) eS :39.03 (-0.70X) WMTN 218.8 209 eP :20.45 (-0.54X) eS :46.73 ( 0.47X) BBG 232.7 180 eP :22.45 (-0.77X) eS :50.00 (-0.11X) TRYN 234.9 143 ePd :23.87 ( 0.37X) PLVA 237.3 97 eS :49.50 (-1.83X) ABTN 240.1 241 eP :23.46 (-0.68X) eS :53.46 ( 1.75X) GMG 247.0 199 eS :52.80 (-0.53X) PKNC 257.4 113 eS :56.48 ( 1.02X) ***** 15 NOVEMBER 1986; 12:07 - SHOOKS GAP, TENNESSEE ***** *TEIC OT= 12:07:56.24 LAT= 35.885N LON= 83.826W DEP= 13.9 KM MDB= 2.1 NO= 40, GAP= 48 DEG, RMS= 0.20 SEC, SDOT= 0.04 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -59 DEG; ERHMIN= 0.2 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HPK 6.6 313 iP 12:07:58.90 (-0.01 ) iS 12:07:60.90 ( 0.05 ) TKL 25.6 170 iPc :08:01.37 ( 0.14 ) iS :08:04.90 ( 0.03 ) CRTN 34.9 358 iPc :02.66 ( 0.00 ) iS :07.11 (-0.24 ) LMTN 37.7 89 eP :02.97 (-0.13 ) eS :08.10 (-0.01 ) GBTN 42.5 235 ePd :03.80 (-0.04 ) eS :09.20 (-0.19 ) ORT 43.4 274 eP :04.32 ( 0.34 ) eS :09.78 ( 0.14 ) WSSR 71.0 162 iPc :08.36 (-0.01 ) eS :16.80 (-0.42 ) TLT 76.9 213 eP :09.00 (-0.20 ) eS :18.45 (-0.21 ) SMTN 80.0 46 eP :09.50 (-0.18 ) eS :20.00 ( 0.51 ) CCVA 80.9 10 iS :19.68 (-0.02 ) ETT 84.3 223 iP :10.05 (-0.28 ) iS :20.05 (-0.56 ) ONTN 86.4 320 ePc :10.56 (-0.10 ) RICH 91.0 87 eP :11.40 ( 0.01 ) eS :22.90 ( 0.46 ) TQTN 91.2 244 eP :11.59 ( 0.23 ) eS :22.85 ( 0.46 ) RBNC 96.0 127 eP+ :12.35 ( 0.11 ) iS :23.60 (-0.31 ) RCT 96.6 232 eP :12.10 (-0.08X) eS :24.30 ( 0.49X) BRTN 100.8 58 eP :13.02 ( 0.15 ) DCT 106.8 210 iP :14.00 ( 0.23 ) eS :26.80 ( 0.24 ) WMTN 125.8 236 eP :16.90 ( 0.23 ) ANTN 130.6 284 eP :17.60 ( 0.17 ) RHT 131.2 227 eP :18.00 ( 0.51X) GMG 137.0 214 eP- :18.70 ( 0.26 ) eS :35.19 ( 0.54 ) BRBC 140.1 96 eP :19.58 ( 0.58 ) TRYN 158.8 115 eP :22.30 ( 0.54 ) eS :40.90 ( 0.50 ) SLTN 165.4 68 eP :22.09 (-0.62 ) RCG 171.2 234 eP :25.22 ( 1.59X) PDTN 195.6 250 eP :28.05 ( 0.70 ) eS :52.17 ( 2.10X) BENN 199.0 100 eS :52.78 ( 1.72X) ABTN 206.2 271 eP :29.25 ( 0.27X) eS :54.05 ( 1.18X) ----- *GIT OT= 12:07:56.3 LAT= 35.889N LON= 83.823W DEP= 16.4 KM MDB= 2.0 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.2 KM, AZ= -44 DEG; ERHMIN= 0.1 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HPK 6.5 309 P 12:07:58.90 (-0.23 ) S 12:08:00.90 (-0.34 ) TKL 26.0 170 P :08:01.46 ( 0.19 ) S :04.95 ( 0.00 ) CRTN 34.5 357 P :02.66 ( 0.17 ) S :07.11 ( 0.05 ) LMTN 37.4 90 P :02.97 ( 0.05 ) S :08.10 ( 0.29 ) GBTN 43.0 235 P :03.60 (-0.15 ) S :09.20 (-0.05 ) ORT 44.3 275 P :04.32 ( 0.37 ) S :09.78 ( 0.19 ) TLT 77.5 213 P :09.00 (-0.13 ) S :18.45 (-0.11 ) SMTN 79.4 46 P :09.50 ( 0.09 ) RCT 97.2 232 P :12.10 (-0.13 ) S :24.30 ( 0.35 ) DCT 107.4 210 P :14.00 ( 0.15 ) S :26.80 ( 0.05 ) RHT 132.0 227 P :18.00 ( 0.26 ) ***** 16 NOVEMBER 1986; 19:08 - ELVERTON, TENNESSEE ***** *TEIC OT= 19:08:36.07 LAT= 35.935N LON= 84.424W DEP= 21.5 KM MDB= 1.7 NO= 24, GAP= 80 DEG, RMS= 0.15 SEC, SDOT= 0.05 SEC, Q= A, SQD= A/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -68 DEG; ERHMIN= 0.3 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ORT 11.1 105 iPc 19:08:40.17 ( 0.05 ) iS 19:08:43.04 (-0.03 ) GBTN 35.5 147 iP :42.90 (-0.02 ) iS :48.00 ( 0.08 ) CBT 43.9 180 eP :44.00 (-0.11 ) eS :49.69 (-0.29 ) TQTN 54.0 211 eP :45.53 (-0.05 ) eS :52.39 (-0.12 ) CRTN 60.2 61 ePd :46.51 (-0.01 ) eS :54.23 ( 0.08 ) ONTN 60.6 358 eP :46.55 (-0.05 ) eS :54.17 (-0.12 ) TKL 66.3 117 ePc :47.36 (-0.07 ) eS :55.79 ( 0.07 ) ETT 67.7 182 eP :47.50 (-0.16 ) iS :56.00 (-0.11 ) RCT 68.9 198 eS :56.85 ( 0.46 ) TLT 71.5 170 eS :56.40 (-0.71X) ANTN 77.3 290 ePc :48.99 (-0.13 ) eS :58.85 ( 0.21 ) DCT 97.8 180 eP :52.10 (-0.11 ) iS :09:03.40 (-0.59X) RHT 103.8 204 eP :53.10 (-0.01 ) eS :06.00 ( 0.46 ) GMG 121.1 191 eS :10.50 ( 0.25 ) SMTN 122.2 66 eP :57.00 ( 1.03X) eS :11.00 ( 0.50 ) RICH 144.9 90 eS :16.84 ( 0.33X) ----- *GIT OT= 19:08:36.1 LAT= 35.932N LON= 84.420W DEP= 23.2 KM MDB= 1.3 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -6 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ORT 9.8 95 P 19:08:40.17 ( 0.02 ) S 19:08:43.04 (-0.09 ) GBTN 35.0 147 P :42.90 ( 0.03 ) S :48.00 ( 0.17 ) CBT 43.5 180 P :44.00 (-0.04 ) S :49.69 (-0.18 ) CRTN 59.9 60 P :46.51 ( 0.07 ) S :54.23 ( 0.20 ) ONTN 61.0 358 P :46.55 (-0.05 ) S :54.17 (-0.13 ) RCT 68.7 199 S :56.85 ( 0.55 ) TLT 71.1 170 S :56.40 (-0.53 ) DCT 97.4 180 P :52.10 (-0.05 ) S :09:03.40 (-0.52 ) RHT 103.7 204 P :53.10 (-0.03 ) S :06.00 ( 0.38 ) ***** 21 NOVEMBER 1986; 13:49 - TALLASSEE, TENNESSEE ***** *TEIC OT= 13:49:54.60 LAT= 35.550N LON= 84.083W DEP= 6.8 KM MDB= 0.7 NO= 9, GAP= 111 DEG, RMS= 0.14 SEC, SDOT= 0.15 SEC, Q= C, SQD= C/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= -24 DEG; ERHMIN= 0.4 KM; ERZ= 7.0 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 17.4 318 iP 13:49:58.00 ( 0.12 ) iS 13:49:60.20 (-0.08 ) TKL 30.4 67 eP :50:00.09 ( 0.07 ) eS :50:03.99 ( 0.00 ) ETT 42.0 234 eP :02.00 ( 0.05 ) iS :07.20 (-0.11 ) WSSR 54.9 123 eP- :04.30 ( 0.17 ) eS :10.70 (-0.39 ) CRTN 75.3 17 eS :16.45 (-0.38 ) ***** 21 NOVEMBER 1986; 18:50 - GATLINBURG, TENNESSEE ***** *TEIC OT= 18:50:34.22 LAT= 35.725N LON= 83.555W DEP= 14.5 KM MDB= 1.8 NO= 35, GAP= 54 DEG, RMS= 0.25 SEC, SDOT= 0.05 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -43 DEG; ERHMIN= 0.3 KM; ERZ= 0.5 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKL 21.2 250 iPd 18:50:38.75 ( 0.14 ) iS 18:50:42.00 ( 0.18 ) LMTN 22.5 36 eP- :38.75 (-0.07 ) iS :41.90 (-0.29 ) HPK 36.8 307 eP :41.10 ( 0.15 ) eS :45.60 (-0.27 ) WSSR 49.6 182 iPc :43.15 ( 0.12 ) iS :49.18 (-0.28 ) CRTN 58.7 334 eP :44.09 (-0.25 ) eS :51.71 (-0.02 ) GBTN 59.7 264 iP :44.20 (-0.28 ) iS :51.80 (-0.17 ) RBNC 65.8 128 eS :45.71 ( 0.17 ) eS :53.40 (-0.40 ) RICH 69.9 72 eP :46.30 ( 0.20X) eS :55.50 ( 0.72 ) ORT 70.8 287 eP :46.70 ( 0.52X) eS :54.67 (-0.25 ) SMTN 80.3 25 eP :47.80 ( 0.13 ) iS :57.90 ( 0.40 ) CBT 81.1 256 eP :47.80 ( 0.05 ) eS :57.80 ( 0.17 ) TLT 81.1 235 eP :48.00 ( 0.24 ) eS :58.00 ( 0.35 ) ETT 92.9 242 eP :49.10 (-0.48 ) eS :51:01.00 ( 0.21 ) BRTN 93.6 41 eP :49.40 (-0.29 ) eS :01.12 ( 0.14 ) BBG 97.2 194 eP :50.80 ( 0.49 ) eS :02.50 ( 0.44 ) DCT 108.2 227 eP :51.70 (-0.22 ) BRBC 114.8 89 eS- :53.30 ( 0.24 ) eS :06.75 (-0.07 ) ONTN 116.0 317 eP :53.12 (-0.01 ) eS :08.30 ( 1.37X) TRYN 129.2 113 eP :56.50 ( 1.33X) eS :10.00 (-0.46 ) WMTN 139.1 248 eP :58.08 ( 1.43X) eS :16.68 ( 3.66X) RHT 140.3 240 eS :14.80 ( 1.49X) SLTN 151.8 58 eP :58.90 ( 0.33 ) eS :17.72 ( 1.38X) ANTN 159.2 289 eS :19.00 ( 0.63 ) GFM 163.5 74 eP :51:02.00 ( 1.50X) eS :21.00 ( 1.32X) ABTN 231.5 275 eS :38.70 ( 1.20X) ----- *GIT OT= 18:50:34.3 LAT= 35.727N LON= 83.562W DEP= 18.4 KM MDB= 1.6 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -67 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKL 20.7 249 P 18:50:38.78 (-0.05 ) S 18:50:42.00 (-0.13 ) LMTN 22.7 38 P :38.75 (-0.32 ) S :41.90 (-0.65 ) HPK 36.2 308 P :41.10 ( 0.18 ) S :45.60 (-0.16 ) WSSR 49.8 182 P :43.15 ( 0.21 ) S :49.18 (-0.08 ) CRTN 58.2 334 P :44.09 (-0.14 ) S :51.71 ( 0.22 ) GBTN 59.1 264 P :44.20 (-0.17 ) S :51.80 ( 0.06 ) RBNC 66.5 128 P :45.82 ( 0.32 ) S :53.40 (-0.30 ) RICH 70.4 72 P :46.30 ( 0.19 ) S :55.50 ( 0.75 ) ORT 71.1 288 P :46.70 ( 0.47 ) S :54.67 (-0.28 ) SMTN 80.3 25 P :47.80 ( 0.14 ) S :58.00 ( 0.57 ) CBT 80.6 255 P :47.80 ( 0.09 ) S :57.80 ( 0.28 ) TLT 80.8 234 P :48.00 ( 0.26 ) S :58.00 ( 0.42 ) ETT 92.6 241 P :49.10 (-0.48 ) S :51:01.00 ( 0.23 ) DCT 108.1 226 P :51.70 (-0.32 ) S :05.00 ( 0.01 ) RHT 140.3 239 S :14.80 ( 1.04 ) ***** 24 NOVEMBER 1986; 18:39 - MT. VERNON, TENNESSEE ***** *TEIC OT= 18:39:35.03 LAT= 35.397N LON= 84.251W DEP= 13.2 KM MDB= 2.1 NO= 21, GAP= 111 DEG, RMS= 0.20 SEC, SDOT= 0.08 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= -55 DEG; ERHMIN= 0.4 KM; ERZ= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 30.1 7 ePd 18:39:40.82 ( 0.17 ) iS 18:39:44.73 (-0.02 ) TKL 52.1 56 iP :44.03 (-0.12 ) eS :50.60 (-0.21 ) ORT 57.1 355 iS :52.13 (-0.10 ) WSSR 62.6 102 iPc :46.13 ( 0.23 ) eS :52.90 (-0.94X) HPK 67.7 30 eP+ :46.60 ( 0.01X) eS :54.90 (-0.13X) GMG 70.5 213 iP- :46.93 (-0.15 ) eS :55.47 (-0.41 ) LMTN 93.8 54 eP :50.19 (-0.43 ) eS :40:01.90 (-0.09 ) CRTN 96.5 22 eP :51.15 ( 0.13 ) RCG 110.3 245 eS :06.40 ( 0.06 ) RBNC 115.0 92 eP :54.17 ( 0.20 ) eS :07.89 ( 0.09 ) ONTN 121.6 352 eP :54.90 ( 0.02 ) ANTN 123.5 314 eP+ :55.35 ( 0.19 ) LKGA 140.6 233 eP :58.43 ( 0.64 ) RICH 142.1 65 eP :58.79 ( 0.76 ) eS :16.78 ( 1.95X) PDTN 146.0 265 eP :59.52 ( 0.95X) BRTN 164.2 49 eP :40:02.12 ( 0.73 ) ABTN 176.8 288 eP :04.11 ( 0.81 ) eS :25.00 ( 1.06X) BRBC 182.1 77 eS :26.60 ( 0.99X) TRYN 182.9 94 eP :04.40 ( 0.12 ) eS :26.67 ( 1.04X) GFM 234.8 70 eP :12.40 ( 0.09X) iS :40.90 ( 1.38X) BENN 235.8 85 es :40.55 ( 0.90X) ***** 2 DECEMBER 1986; 11:47 - CONCORD, TENNESSEE ***** *TEIC OT= 11:47:40.32 LAT= 35.758N LON= 84.197W DEP= 16.5 KM MDB= 0.1 NO= 6, GAP= 217 DEG, RMS= 0.12 SEC, SDOT= 0.26 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.1 KM, AZ= 76 DEG; ERHMIN= 0.9 KM; ERZ= 2.3 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 10.2 187 iP 11:47:43.87 ( 0.23 ) eS 11:47:45.90 (-0.16 ) ORT 19.5 330 iPc :44.68 ( 0.03 ) iS :47.75 (-0.06 ) TKL 39.9 106 iS :52.78 (-0.06 ) ETT 53.3 206 iS :56.33 (-0.06 ) ***** 3 DECEMBER 1986; 09:44 - RICHMOND, VIRGINIA ***** *VTSO Felt (IV) in Richmond, Virginia. *VTSO OT= 09:44:21.15 LAT= 37.580N LON= 77.458W DEP= 1.6FXD KM MDB= 1.5 NO= 11, GAP= 208 DEG, RMS RES= 0.15 SEC, SDOT= 0.22 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.9 KM, AZ= 86 DEG; ERHMIN= 0.4 KM; ERZ= 42.4 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NA5 53.7 333 ePc 09:44:29.92 (-0.06 ) S 09:44:36.49 ( 0.07 ) NA12 58.1 320 eP :30.60 (-0.10 ) GHV 62.0 293 P :31.25 (-0.08 ) S :38.89 ( 0.12 ) NA2 65.8 337 eP :31.82 (-0.14 ) S :39.96 ( 0.10 ) PBV 66.6 186 eP :32.35 ( 0.25 ) S :39.89 (-0.20 ) FRV 90.1 243 ePd :36.16 ( 0.21 ) S :46.56 (-0.19 ) CVL 98.9 297 eP? :39.54 ( 2.14X) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 09:44:38.5 Sg 09:44:49.9 ***** 4 DECEMBER 1986; 03:08 - SWEETWATER, TENNESSEE ***** *GIT OT= 03:08:22.1 LAT= 35.515N LON= 84.526W DEP= 12.2 KM MDB= 0.2 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -51 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.3 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CBT 10.0 74 P 03:08:24.85 ( 0.12 ) S 03:08:26.90 ( 0.26 ) TQTN 18.5 272 P :25.56 (-0.22 ) S :28.33 (-0.13 ) RCT 22.4 213 P :26.10 (-0.24 ) S :29.70 ( 0.28 ) GBTN 33.2 60 S :31.90 (-0.31 ) WMTN 50.3 234 P :31.10 ( 0.48 ) S :36.50 (-0.34 ) DCT 52.0 169 P :31.00 ( 0.10 ) S :37.00 (-0.32 ) RHT 58.3 214 S :38.95 (-0.11 ) TKL 70.0 77 S :41.74 (-0.54 ) ----- *TEIC OT= 03:08:21.42 LAT= 35.530N LON= 84.529W DEP= 15.6 KM MDB= -0.2 NO= 10, GAP= 178 DEG, RMS= 0.24 SEC, SDOT= 0.19 SEC, Q= C, SQD= C/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.9 KM, AZ= -23 DEG; ERHMIN= 0.6 KM; ERZ= 1.8 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CBT 9.9 84 eP 03:08:24.85 ( 0.25 ) eS 03:08:26.90 (-0.02 ) TQTN 17.9 265 ePd :25.56 ( 0.09 ) eS :28.33 (-0.09 ) GBTN 32.6 62 iS :31.90 (-0.09 ) WMTN 51.0 232 eP :31.10 ( 0.75 ) eS :36.50 (-0.36 ) DCT 53.7 169 eP :31.00 ( 0.24 ) eS :38.95 ( 1.37X) RHT 59.5 213 eS :38.95 (-0.14 ) TKL 69.9 78 eS :41.74 (-0.10 ) ***** 10 DECEMBER 1986; 11:30 - RICHMOND, VIRGINIA ***** *VTSO This earthquake is the main shock of a series of events to have occurred in a four block area of downtown Richmond. Because of numerous high intensity reports and small magnitude, these events are thought to be extremely shallow (1-2 km at most). The earthquakes are the subject of a VTSO Special Study (#87-1). *NEIC Felt (V) in the Richmond, VA, area. *NEIC OT= 11:30:05.0 LAT= 37.585N LON= 77.468W DEP= 1.0 KM mb(Lg)= 2.5 NO= 6 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) NA2 64.5 338 P 11:30:16.80 ( 0.1 ) CVL 97.9 297 P :22.40 (-0.2 ) BLA 264.7 262 P :47.60 ( 1.7 ) PRIN 390.3 37 P :31:10.00 ( 8.2 ) GFM 420.3 248 P :11.00 ( 5.1 ) PRM 588.2 230 P :20.00 (-7.2 ) ----- *VTSO OT= 11:30:06.08 LAT= 37.585N LON= 77.468W DEP= 1.2 FXD KM MDB= 2.2 NO= 14, GAP= 207 DEG, RMS RES= 0.16 SEC, SDOT= 0.12 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.9 KM, AZ= 81 DEG; ERHMIN= 0.4 KM; ERZ= 10.9 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BPVA 13.6 240 iP 11:30:08.20 (-0.12 ) iS 11:30:10.00 ( 0.05 ) NA5 52.9 334 P :14.80 ( 0.03 ) S :21.20 ( 0.08 ) NA12 57.2 321 P :15.60 ( 0.12 ) S :22.00 (-0.33 ) GHV 61.0 293 P :16.20 ( 0.10 ) S :23.20 (-0.22 ) NA2 65.0 338 P :16.80 ( 0.04 ) S :24.40 (-0.16 ) PBV 67.1 185 P :17.00 (-0.09 ) FRV 89.6 242 P :20.80 ( 0.01 ) CVL 97.9 297 P :22.40 ( 0.23 ) S :34.20 ( 0.29 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 11:30:22.5 Sg 11:30:34.0 ***** 20 DECEMBER 1986; 08:13 - WEST VIRGINIA ***** *VTSO OT= 08:13:12.75 LAT= 38.058N LON= 80.643W DEP= 13.8 KM MDB= 1.2 NO= 10, GAP= 238 DEG, RMS RES= 0.18 SEC, SDOT= 0.33 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 5.1 KM, AZ= -42 DEG; ERHMIN= 0.4 KM; ERZ= 5.6 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HWV 54.7 199 eS 08:13:28.90 (-0.05 ) BV2 64.1 82 P+ 08:13:23.70 (-0.04 ) S :31.40 ( 0.01 ) BV3 79.4 75 eP :25.80 (-0.30 ) eS :35.60 ( 0.21 ) NAV 83.5 189 eP :26.80 ( 0.09 ) eS :36.20 (-0.23 ) PWV 87.9 204 eS :37.60 (-0.01 ) PLVA 161.1 197 eP :39.10 ( 0.43 ) eS :56.90 ( 0.15 ) GFM 239.6 206 eP :50.47 (-0.27X) eS :14:18.00 ( 0.78X) TKL 385.8 227 eS :50.50 ( 2.79X) ----- *TEIC OT= 08:13:12.89 LAT= 38.036N LON= 80.619W DEP= 14.8 KM MDB= 1.9 NO= 9, GAP= 226 DEG, RMS= 0.22 SEC, SDOT= 0.42 SEC, Q= D, SQD= D/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 3.9 KM, AZ= -47 DEG; ERHMIN= 0.5 KM; ERZ= 22.2 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HWV 53.2 202 eS 08:14:28.90 (-0.01 ) BV3 78.0 73 eP 08:14:25.80 (-0.17 ) eS :35.60 ( 0.08 ) NAV 81.3 191 eP :27.10 ( 0.64X) eS :36.40 ( 0.03 ) PWV 86.6 206 eS :37.60 (-0.21 ) PLVA 159.4 198 eP :39.10 ( 0.60 ) eS :56.90 (-0.29 ) GFM 238.3 207 eP :50.47 (-0.15 ) eS :15:18.00 (-0.16 ) TKL 385.7 228 eS :50.50 ( 1.47X) ***** 21 DECEMBER 1986; 13:31 - KNOXVILLE, TENNESSEE ***** *TEIC OT= 13:31:43.71 LAT= 35.905N LON= 83.880W DEP= 17.2 KM MDB= 0.3 NO= 9, GAP= 205 DEG, RMS= 0.10 SEC, SDOT= 0.09 SEC, Q= C, SQD= A/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -78 DEG; ERHMIN= 0.3 KM; ERZ= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) HPK 2.3 2 eS 13:32:48.80 (-0.04 ) TKL 29.0 161 iP 13:32:49.45 ( 0.07 ) iS :53.55 ( 0.03 ) CRTN 32.9 6 ePd :50.01 ( 0.07 ) eS :54.43 (-0.05 ) ORT 38.4 271 eS :56.15 ( 0.28 ) GBTN 40.0 229 iS :56.17 (-0.11 ) LMTN 42.6 92 eS :56.85 (-0.15 ) ETT 82.7 219 eP :57.20 (-0.31X) iS :33:07.45 (-0.13 ) ***** 24 DECEMBER 1986; 17:58 - RICHMOND, VIRGINIA ***** *VTSO Felt (IV) in Richmond, Virginia. *VTSO OT= 17:58:38.25 LAT= 37.583N LON= 77.458W DEP= 1.0 FXD KM MDB= 1.6 NO= 13, GAP= 208 DEG, RMS RES= 0.16 SEC, SDOT= 0.13 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= 82 DEG; ERHMIN= 0.2 KM; ERZ= 36.4 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NA5 53.4 333 iPu 17:58:47.05 ( 0.03 ) eS 17:58:53.36 (-0.06 ) NA12 57.8 320 ePd :47.76 ( 0.01 ) eS :54.65 (-0.03 ) GHV 61.8 292 eS :55.49 (-0.33 ) NA2 65.5 337 ePu :48.92 (-0.08 ) eS :56.83 (-0.02 ) PBV 67.0 186 ePd :49.31 ( 0.06 ) eS :57.02 (-0.27 ) FRV 90.3 242 ePd :53.35 ( 0.28 ) eS :59:03.89 ( 0.00 ) CVL 98.7 297 eP :54.70 ( 0.24 ) eS :06.44 ( 0.14 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 17:58:54.7 Sg 17:59:06.6 ***** 26 DECEMBER 1986; 08:59 - NIOTA, TENNESSEE ***** *TEIC OT= 08:59:37.96 LAT= 35.525N LON= 84.528W DEP= 16.1 KM MDB= 0.4 NO= 10, GAP= 155 DEG, RMS= 0.19 SEC, SDOT= 0.16 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.8 KM, AZ= -31 DEG; ERHMIN= 0.5 KM; ERZ= 2.0 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TQTN 18.0 267 iPd 08:59:42.20 ( 0.15 ) iS 08:59:44.93 (-0.11 ) ETT 23.1 163 iP :43.00 ( 0.24 ) eS :46.00 (-0.26 ) GBTN 32.7 61 eP :44.40 ( 0.29 ) iS :48.70 ( 0.10 ) ORT 47.2 25 eS :52.16 (-0.22 ) WMTN 50.8 233 eP- :47.68 ( 0.84X) eS :53.22 (-0.10 ) TKL 69.9 78 eS :58.20 (-0.20 ) ABTN 148.6 286 eS 09:00:19.70 ( 0.47 ) HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR RESERVOIR ACTIVITY: JULY THROUGH DECEMBER 1986 ***** 6 JULY 1986; 00:57 - SENECA, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 005751.12 34.741 82.904 4.7 1.5 12 235 0.21 1.6 3.9 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RBNC 68.8 354 iPc 00:58:02.94 (-0.10 ) eS 00:58:11.75 ( 0.01 ) TRYN 83.8 46 eP :05.60 ( 0.14 ) eS :15.60 (-0.33 ) BBG 84.3 280 iP :05.60 ( 0.03 ) eS :15.80 (-0.32 ) WSSR 85.6 314 eP :05.80 ( 0.00 ) eS :14.99 (-1.52X) TKL 128.9 322 eP :13.90 ( 1.28X) RICH 131.0 3 eP+ :13.46 ( 0.48 ) eS :29.10 ( 0.16 ) BENN 145.6 51 eP :17.11 ( 1.90X) eS :34.37 ( 1.57X) ETT 155.7 295 eP :18.90 ( 2.16X) eS :35.80 ( 0.37 ) GBTN 157.1 311 eP :17.80 ( 0.87 ) eS :36.10 ( 0.32 ) GFM 181.8 33 eP :22.00 ( 1.17X) eS :44.00 ( 1.48X) BHT 222.5 304 eS :54.88 ( 1.70X) RCG 225.0 277 eS :57.30 ( 3.53X) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 005752.0 34.762 82.913 2.0 1.9 5 282 0.10 4.2 99.2 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 19.5 344 S-P 2.55 sec ( 0.21 ) BG3 25.7 356 S-P 3.00 sec (-0.06 ) LPM 26.1 337 S-P 3.05 sec (-0.07 ) RBNC 66.3 354 iPu 00:58:02.85 ( 0.02 ) TRYN 79.8 48 eP :05.70 ( 0.70X) BBG 83.1 279 iP :05.50 (-0.03 ) ***** 14 JULY 1986; 22:31 - LAKE KEOWEE, SOUTH CAROINA ***** *TEIC Extensive aftershocks observed Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 223119.78 34.759 82.917 2.1 2.5 21 223 0.29 1.8 2.9 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RBNC 66.6 355 iPc 22:31:31.56 ( 0.05 ) eS 22:31:37.00 (-3.08X) BBG 82.7 279 eP :34.20 ( 0.05 ) eS :43.30 (-1.34X) TRYN 83.2 47 eP :34.10 (-0.10 ) eS :44.90 ( 0.17 ) WSSR 83.3 314 eP :34.38 ( 0.13 ) eS :42.00 (-2.81X) BRBC 122.9 28 eP :40.53 (-0.21 ) eS :55.50 (-0.55 ) TKL 126.6 322 eP :40.30 (-0.85 ) eS :56.80 ( 0.04 ) RICH 129.0 4 eP :41.85 ( 0.27 ) LMTN 133.0 341 eP :42.41 ( 0.25X) BENN 145.2 52 eP :44.25 ( 0.19 ) eS :32:00.70 (-1.08X) GBTN 154.9 311 eP :45.00 (-0.49 ) eS :05.00 ( 0.75 ) GMG 160.8 275 eP :46.70 ( 0.24 ) eS :06.18 ( 0.24 ) GFM 180.7 34 eP :50.20 ( 0.63 ) eS :11.60 ( 0.29 ) SLTN 200.3 21 eP :53.22 ( 0.80 ) PKNC 214.3 48 ePc :55.33 ( 0.70 ) eS :20.95 ( 0.88 ) CCVA 215.5 342 eP :55.79 ( 1.01X) RCG 223.5 277 eP :57.90 ( 1.89X) eS :22.22 (-0.24 ) LKGA 234.6 267 eP :58.23 ( 0.51X) ONTN 235.8 325 eP :58.85 ( 0.94X) ANTN 262.0 307 eP :32:01.88 ( 0.14X) PDTN 273.6 283 eP :03.89 ( 0.77X) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 223121.1 34.760 82.936 4.0 2.6 28 129 0.07 0.2 1.5 B A/C STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 19.2 350 P 22:31:24.44 ( 0.11 ) S 22:31:26.60 (-0.07 ) LPM 25.6 342 P :25.45 ( 0.10 ) S :28.39 (-0.04 ) BG3 25.8 1 P :25.43 ( 0.04 ) S :28.48 (-0.01 ) RBNC 66.4 356 P :31.50 (-0.41 ) WSSR 81.0 314 P :34.25 (-0.02 ) BBG 81.1 279 P :34.28 (-0.01 ) S :43.75 (-0.04 ) TRYN 81.4 49 P :34.30 (-0.04 ) S :43.90 ( 0.01 ) PRM 91.7 145 P :35.95 (-0.06 ) S :46.75 ( 0.00 ) RICH 129.0 5 P :41.95 (-0.08 ) GBTN 153.6 311 P :46.10 ( 0.13 ) MR07 154.0 106 P :45.90 (-0.13 ) S :32:03.90 (-0.08 ) MR01 157.9 108 P :46.60 (-0.07 ) S :05.20 ( 0.11 ) MR6A 158.9 109 P :46.90 ( 0.08 ) S :05.40 ( 0.06 ) GMG 159.1 274 P :46.82 (-0.04 ) JSC 162.9 109 P :47.45 (-0.01 ) S :06.35 (-0.10 ) MTT 163.8 133 P :47.85 ( 0.24 ) MR02 168.8 112 P :48.25 (-0.22 ) S :08.20 ( 0.02 ) GFM 181.6 34 P :50.15 ( 0.09 ) ***** 15 JULY 1986; 00:16 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 001623.89 34.779 82.969 2.0 1.7 5 227 0.03 0.7 14.0 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 16.9 359 S-P 2.05 sec ( 0.01 ) BBG 77.8 278 eP 00:16:36.50 (-0.04 ) S 00:16:45.70 ( 0.05 ) TRYN 82.4 51 eP :37.20 (-0.08 ) S :47.00 ( 0.07 ) GFM 181.6 36 S :17:14.50 ( 0.41 ) ***** 15 JULY 1986; 01:57 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 015716.44 34.797 82.920 7.6 1.8 9 226 0.08 1.0 2.0 C A/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 15.5 343 Pu 01:57:19.19 (-0.09 ) S 01:57:21.43 ( 0.11 ) BG3 21.8 357 P :20.24 ( 0.03 ) S :22.99 ( 0.06 ) LPM 22.3 335 Pd :20.23 (-0.07 ) S :23.07 (-0.01 ) TRYN 77.7 50 eP :27.90 (-1.21X) S :37.90 (-0.34 ) BBG 82.0 276 eP :29.70 (-0.10 ) S :39.50 ( 0.07 ) TKL 123.2 321 eP :42.00 ( 5.57X) S :52.40 ( 1.57X) GFM 177.3 35 eP :50.50 ( 5.99X) S :58:11.00 ( 6.28X) ***** 15 JULY 1986; 02:24 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 022450.8 34.801 82.906 5.4 1.8 7 220 0.04 0.8 2.1 C B/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 15.6 338 P 02:24:53.44 (-0.05 ) S 02:24:55.50 ( 0.05 ) BG3 21.5 354 P :54.44 ( 0.04 ) S :56.99 (-0.03 ) LPM 22.6 331 P :54.55 (-0.03 ) S :57.35 ( 0.03 ) JSC 161.8 111 P :25:16.80 (-0.20X) S :25:36.00 ( 0.11 ) ***** 15 JULY 1986; 03:52 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 035245.90 34.776 82.929 0.2 1.5 7 278 0.01 0.3 0.3 C A/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 17.6 347 Pu 03:52:48.92 ( 0.01 ) S 03:52:51.08 ( 0.00 ) BG3 24.1 359 P+ :49.94 (-0.01 ) S :52.87 ( 0.00 ) LPM 24.2 339 Pd :49.97 ( 0.00 ) S :52.89 (-0.01 ) TRYN 79.8 49 P :59.50 ( 0.56X) BBG 81.4 278 P :59.20 ( 0.00 ) ***** 15 JULY 1986; 04:15 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 041544.05 34.771 82.943 1.4 1.5 4 229 0.01 C A/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 17.9 352 S-P 2.17 sec ( 0.01 ) LPM 24.3 342 S-P 2.88 sec (-0.01 ) BBG 80.2 278 P 04:15:57.10 ( 0.00 ) S 04:16:07.20 ( 0.71X) TRYN 81.2 50 P :57.25 ( 0.00 ) S : 7.00 ( 0.25X) TKL 124.2 322 S :20.00 ( 1.32X) GFM 181.0 35 P :15.00 ( 1.78X) S :35.70 ( 1.48X) ***** 15 JULY 1986; 08:52 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 085213.39 34.773 82.945 3.0 1.3 7 275 0.06 1.2 10.4 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 17.7 352 P 08:52:16.34 (-0.02 ) S 08:52:18.52 ( 0.02 ) LPM 24.0 342 P :17.38 ( 0.00 ) S :20.24 (-0.01 ) BG3 24.4 3 S-P 3.14 sec ( 0.22 ) BBG 80.0 278 P :26.50 ( 0.08 ) S 08:52:35.75 (-0.05 ) ***** 15 JULY 1986; 12:44 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 124403.8 34.768 82.944 1.2 1.8 5 233 0.02 0.6 36.9 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 18.3 352 P 12:44:06.84 (-0.03 ) S 12:44:09.06 ( 0.00 ) LPM 24.6 343 P :07.90 ( 0.02 ) S :10.82 ( 0.01 ) JSC 163.9 109 S :49.50 ( 0.05 ) ***** 15 JULY 1986; 17:28 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 172849.8 34.767 82.916 1.3 2.2 9 191 0.08 0.9 100.7 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 18.9 345 P 17:28:52.95 (-0.03 ) S 17:28:55.15 (-0.10 ) BG3 25.1 357 P :54.16 ( 0.17 ) S :57.00 ( 0.02 ) LPM 25.6 337 P :54.14 ( 0.08 ) S :57.09 (-0.01 ) PRM 91.3 146 P :29:04.60 (-0.07 ) S :29:14.60 (-0.75X) JSC 161.4 110 P :15.90 (-0.07 ) S :34.90 ( 0.11 ) ***** 15 JULY 1986; 20:35 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 203513.4 34.777 82.939 3.0 1.7 5 231 0.01 0.5 2.7 C B/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 17.4 350 P 20:35:16.26 (-0.02 ) S 20:35:18.38 ( 0.00 ) LPM 23.8 341 P :17.32 ( 0.01 ) S :20.17 ( 0.01 ) JSC 163.7 110 P :39.50 (-0.37X) S :59.00 ( 0.04 ) ***** 18 JULY 1986; 01:43 - LAKE KEOWEE, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 014351.6 34.778 82.933 3.2 1.4 7 230 0.05 1.0 6.5 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 17.3 348 P 01:43:54.54 ( 0.03 ) S 01:43:56.64 ( 0.02 ) LPM 23.9 339 P :55.62 ( 0.07 ) S :58.32 (-0.09 ) BG3 23.9 0 P :55.56 ( 0.00 ) S :58.40 (-0.02 ) JSC 163.2 110 S :44:36.90 (-0.15 ) ***** 1 SEPTEMBER 1986; 14:02 - MONTICELLO RESERVOIR, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 140236.6 34.383 81.316 1.5 1.9 9 306 0.08 1.0 0.9 C A/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MR07 1.6 209 Pd 14:02:36.90 (-0.11 ) S 14:02:37.40 ( 0.06 ) MR10 5.6 200 Pu :37.65 ( 0.06 ) MR01 6.0 161 Pu :37.77 ( 0.11 ) S :38.50 (-0.02 ) MR9A 10.7 186 P- :38.50 ( 0.10 ) S :39.80 (-0.06 ) JSC 12.6 156 Pu :38.60 (-0.10 ) MR02 22.6 159 P- :40.30 (-0.03 ) ***** 12 NOVEMBER 1986; 15:18 - MONTICELLO RESERVOIR, SC ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 151806.4 34.294 81.340 1.5 1.1 11 225 0.06 0.3 0.7 C A/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MR9A 1.2 126 P 15:18:06.80 ( 0.06 ) MR10 4.7 3 P :07.20 (-0.03 ) S 15:18:07.90 (-0.02 ) MR01 5.9 44 P :07.50 ( 0.09 ) S :08.30 ( 0.06 ) JSC 7.5 102 Pd :07.65 (-0.02 ) S :08.65 (-0.06 ) MR07 8.6 9 Pd :07.80 (-0.04 ) S :08.95 (-0.08 ) MR02 15.1 138 P :09.00 ( 0.08 ) S :10.95 (-0.04 ) ***** 11 DECEMBER 1986; 14:05 - LAKE KEOWEE, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 140550.18 34.889 82.888 9.0 2.8 21 75 0.27 0.8 1.5 B B/A STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 8.9 301 iP 14:05:52.45 ( 0.07 ) BG3 12.2 341 iP :52.95 ( 0.16 ) eS 14:05:54.65 (-0.04 ) LPM 16.0 309 iP :53.60 ( 0.25 ) TRYN 72.0 54 ePd :06:02.37 (-0.15 ) eS :06:11.07 (-0.45 ) WSSR 76.3 305 eP :03.23 (-0.03 ) eS :12.10 (-0.71X) LDV 84.1 167 eP :04.90 ( 0.43 ) eS :14.60 (-0.30 ) BBG 84.5 269 iP- :04.47 (-0.13 ) eS :14.50 (-0.63 ) BEV 89.9 171 eP :05.70 ( 0.31 ) eS :15.50 (-0.99X) PRM 101.6 152 iP :07.30 ( 0.11 ) BENN 134.5 56 eP :12.43 ( 0.15 ) eS :32.17 ( 3.75X) DCT 141.1 278 eP :14.00 ( 0.74X) eS :33.00 ( 2.89X) GBTN 148.1 306 eP :15.10 ( 0.78 ) eS :34.50 ( 2.57X) ETT 150.9 289 iPd :15.20 ( 0.43 ) eS :35.10 ( 2.38X) 001 158.5 113 iP :16.50 ( 0.61 ) eS :35.15 ( 0.49 ) GMG 163.0 269 eP :17.50 ( 0.83X) eS :36.87 ( 0.86X) JSC 164.1 114 iP :17.50 ( 0.75X) eS :36.40 ( 0.25 ) CDG 166.2 260 eS :38.00 ( 1.26X) GFM 167.3 36 eP- :18.13 ( 0.75 ) RCT 169.4 288 eS :40.00 ( 2.43X) ETG 182.4 194 eP :19.80 ( 0.25 ) eS :42.00 ( 1.01X) RHT 183.3 277 eP :21.30 ( 1.59X) eS :42.00 ( 0.74X) CCVA 202.8 340 iP :24.37 ( 1.67X) iS :50.70 ( 4.25X) PKNC 202.8 50 eP- :23.70 ( 0.96X) eS :48.48 ( 1.98X) RCG 225.0 273 eP :28.05 ( 1.94X) eS :53.20 ( 0.86X) TVG 228.6 256 eP :27.60 ( 0.96X) eS :54.00 ( 0.74X) PLVA 251.5 38 eP :29.77 (-0.34X) eS :07:00.57 ( 1.31X) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 140550.8 34.890 82.890 3.5 23 117 0.10 0.3 1.1 B A/B STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 8.8 302 iPu 14:05:52.45 ( 0.05 ) S 14:05:53.40 (-0.14 ) BG3 12.1 341 iPu :52.95 ( 0.03 ) S :54.60 ( 0.16 ) LPM 15.8 309 iPu :53.60 ( 0.09 ) TRYN 72.2 55 iPd :06:02.40 (-0.19 ) S :06:11.00 (-0.06 ) WSSR 76.2 304 eP- :03.10 (-0.12 ) S :12.00 (-0.15 ) BBG 84.2 269 iPd :04.50 (-0.03 ) S :14.50 ( 0.11 ) PRM 101.7 152 iPu :07.30 (-0.04 ) S :19.30 ( 0.06 ) GBTN 147.9 306 iP+ :15.00 ( 0.22 ) MR07 154.6 112 iPu :15.90 ( 0.03 ) S :33.60 (-0.30 ) MR10 155.0 113 ePd :16.10 ( 0.17 ) S :34.00 (-0.01 ) MR01 158.8 113 iPd :16.50 (-0.03 ) S :35.15 ( 0.11 ) JSC 164.1 114 iPu :17.50 ( 0.11 ) S :36.40 (-0.11 ) GFM 167.4 36 iPd :17.80 (-0.12 ) ----- Oper Origin Lat-N Lon-W Dep MDB ERHMAX AZ ERHMIN AREA GIT 140551.0 34.874 82.956 1.0 2.0 0.6 23 0.4 0.6 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 6.4 348 P 14:05:52.45 ( 0.26 ) S 14:05:53.40 ( 0.39 ) LPM 13.2 332 P :53.60 ( 0.19 ) BG3 13.4 10 P :52.95 (-0.50 ) S :54.60 (-0.55 ) WSSR 72.1 308 P :06:04.23 ( 0.11 ) S :06:13.10 (-0.17 ) BBG 78.1 270 P :05.47 ( 0.25 ) S :15.50 ( 0.37 ) LDV 84.4 163 P :05.90 (-0.45 ) BEV 89.5 167 P :06.70 (-0.57 ) DCT 134.9 279 P :15.00 (-0.55 ) RCT 163.6 289 S :41.00 (-0.49 ) RHT 177.1 277 P :22.30 (-0.91 ) NOTE: For all Georgia Tech station data, a positive one second time correction was applied due to unexplainable arrival time error on all stations. ***** 11 DECEMBER 1986; 14:07 - LAKE KEOWEE, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 140711.51 34.899 82.880 8.5 3.0 25 79 0.26 0.6 0.9 B B/B STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 9.0 293 iP 14:07:13.73 ( 0.07 ) eS 14:07:15.25 ( 0.02 ) BG3 11.5 336 iP :14.25 ( 0.28 ) LPM 15.9 304 eP :14.40 (-0.23 ) TRYN 70.8 55 iP :23.60 (-0.05 ) eS :32.20 (-0.31 ) WSSR 76.3 304 eP :24.53 (-0.05 ) eS :33.27 (-0.85 ) LDV 85.0 168 eP :26.00 ( 0.05 ) eS :36.20 (-0.28 ) BBG 85.1 268 iP :25.53 (-0.52 ) iS :34.63 (-2.03X) BEV 90.8 171 eP :27.00 ( 0.11 ) eS :36.80 (-1.31X) PRM 102.2 152 eP :28.70 ( 0.06 ) eS :41.00 (-0.14 ) TKL 117.1 316 iPc :31.17 ( 0.24 ) eS :44.73 (-0.38X) BENN 133.4 56 eP :34.03 ( 0.56 ) DCT 141.6 277 eP :35.20 ( 0.50 ) eS :51.80 ( 0.17X) GBTN 148.0 306 eP :36.00 ( 0.34 ) ETT 151.2 289 eP :36.40 ( 0.23 ) eS :55.43 ( 1.25X) 001 158.3 113 eP :37.90 ( 0.69 ) eS :56.30 ( 0.32 ) GMG 163.7 269 eP :38.50 ( 0.37X) iS :58.67 ( 1.10X) JSC 163.9 114 iP :38.60 ( 0.52 ) eS :57.80 ( 0.32 ) GFM 166.1 36 iP :39.47 ( 0.92X) eS :08:00.87 ( 2.58X) CDG 167.0 260 eS :58.00 (-0.34X) RCT 169.7 287 eP :39.50 ( 0.52 ) eS :09:00.80 ( 1.76X) ETG 183.5 194 eP :40.70 (-0.38 ) eS :00.80 (-1.87X) RHT 183.9 277 eP :41.90 ( 0.75X) eS :03.60 ( 0.82X) PKNC 201.6 50 iPd :44.80 ( 0.89X) eS :09.77 ( 2.20X) CCVA 202.0 340 eP+ :45.00 ( 1.05X) eS :08.43 ( 0.80X) RCG 225.6 273 eP :47.93 ( 0.37X) eS :15.23 ( 1.35X) TVG 229.5 256 eP :48.40 ( 0.27X) eS :14.00 (-0.87X) PLVA 250.3 38 eP :50.83 (-0.52X) eS :19.70 (-0.73X) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 140712.1 34.892 82.892 2.9 2.6 23 117 0.13 0.4 1.8 B A/B STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 8.4 301 iPu 14:07:13.73 ( 0.15 ) S 14:07:14.50 (-0.16 ) BG3 11.8 342 iPu :14.25 ( 0.13 ) S :15.50 (-0.08 ) LPM 15.5 309 iPu :14.80 ( 0.09 ) TRYN 72.3 55 iP+ :23.70 (-0.16 ) S :32.20 (-0.14 ) WSSR 75.8 304 eP- :24.50 ( 0.07 ) S :32.70 (-0.62X) BBG 84.0 269 iP- :25.50 (-0.26 ) S :35.50 (-0.10 ) PRM 102.1 152 iP :28.70 ( 0.05 ) S :40.50 (-0.08 ) TKL 116.9 317 iPu :31.10 ( 0.06 ) S :44.70 ( 0.01 ) GBTN 147.5 306 iPu :36.00 ( 0.01 ) MR07 155.0 112 iPu :37.20 ( 0.01 ) S :55.50 ( 0.24 ) MR10 155.4 113 iPu :37.35 ( 0.10 ) MR01 159.1 113 iP+ :37.90 ( 0.05 ) S :56.30 (-0.10 ) JSC 164.4 114 iP- :38.60 (-0.11 ) S :57.80 (-0.08 ) GFM 167.3 36 eP+ :39.10 (-0.08 ) ----- Oper Origin Lat-N Lon-W Dep MDB ERHMAX AZ ERHMIN AREA GIT 140713.1 34.934 82.997 1.0 2.5 0.6 67 0.4 0.6 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 2.4 98 P 14:07:13.73 ( 0.12 ) S 14:07:14.50 ( 0.56 ) LPM 5.6 334 P :14.80 ( 0.62 ) BG3 8.9 42 P :14.25 (-0.52 ) S :15.50 (-0.40 ) WSSR 65.2 306 P :25.53 ( 0.54 ) S :34.27 ( 1.01 ) TKL 106.8 319 P :32.17 (-0.39 ) S :45.73 (-0.38 ) DCT 130.4 276 P :36.20 (-0.66 ) S :52.80 (-0.60 ) RCT 158.0 287 S :08:01.80 (-0.11 ) NOTE: For all Georgia Tech station data, a positive one second time correction was applied due to unexplainable arrival time error on all stations. ***** 14 DECEMBER 1986; 08:03 - LAKE KEOWEE, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 080347.11 34.936 82.880 10.5 1.3 12 209 0.28 1.5 1.9 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BG3 7.9 324 eP 08:03:49.80 ( 0.43 ) eS 08:03:51.18 ( 0.15 ) SMT 8.3 266 eP :49.18 (-0.24 ) eS :50.44 (-0.66 ) LPM 14.0 290 eP :50.38 ( 0.27 ) eS :52.30 ( 0.00 ) RBNC 47.7 348 eP- :55.70 ( 0.15 ) iS :04:01.50 (-0.22 ) TRYN 68.5 57 eP :58.90 ( 0.00 ) eS :07.30 (-0.21 ) WSSR 74.1 301 eP :04:00.19 ( 0.34 ) eS :08.69 (-0.46 ) BBG 85.3 266 eP :03.50 ( 1.87X) eS :11.10 (-1.14X) BENN 131.1 57 eP :10.42 ( 1.82X) ETT 149.9 287 eP :11.80 ( 0.34X) GFM 162.7 36 eP :14.50 ( 0.98X) SMTN 162.8 350 eP :15.90 ( 2.46X) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 080347.6 34.891 82.886 3.7 1.4 6 320 0.05 1.0 2.1 C B/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 9.0 300 P 08:03:49.18 (-0.06 ) S 08:03:50.44 ( 0.03 ) BG3 12.1 340 P+ :49.80 ( 0.07 ) S :51.18 (-0.07 ) LPM 16.0 308 P :50.38 ( 0.04 ) S :52.30 (-0.01 ) ***** 14 DECEMBER 1986; 08:13 - LAKE KEOWEE, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDB NO Gap RMS ERH ERZ Q SQD TEIC 081343.44 34.911 82.876 7.1 1.5 16 229 0.29 1.4 1.7 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 9.0 284 eP 08:13:45.40 (-0.03 ) eS 08:13:46.54 (-0.35 ) BG3 10.5 331 eP :46.12 ( 0.47 ) eS :47.52 ( 0.26 ) LPM 15.5 299 eP :46.70 ( 0.28 ) eS :48.54 (-0.06 ) RBNC 50.5 349 eP :52.00 (-0.29 ) eS :58.32 (-0.42 ) TRYN 69.7 55 eP :55.30 (-0.10 ) eS :14:03.90 (-0.23 ) WSSR 75.9 303 eP :56.50 ( 0.05 ) eS :05.80 (-0.14 ) BBG 85.6 268 eS :08.70 ( 0.00 ) BRBC 106.4 30 eS :15.30 ( 0.68 ) ETT 151.1 288 eP :14:08.30 ( 0.11 ) GFM 165.7 36 eP :11.00 ( 0.63 ) eS :31.10 ( 1.07 ) ----- Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 081344.1 34.891 82.894 1.3 1.4 6 319 0.02 0.3 35.2 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) SMT 8.3 302 P 08:13:45.50 (-0.02 ) S 08:13:46.54 (-0.02 ) BG3 11.8 343 P :46.12 ( 0.03 ) S :47.52 (-0.02 ) LPM 15.4 309 P :46.70 ( 0.03 ) S :48.54 ( 0.01 ) ADDITIONAL ARRIVAL TIME DATA: JULY THROUGH DECEMBER 1986 DATE= 860712; Operator: DGS; Remarks: Ohio event STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME NED iPnd 08:21:16.4 Sn 08:22:29.5 BWD iPnd :18.1 Sn :31.9 BBD iPnd :19.5 Sn :32.5 iPg :38.5 DATE= 860915; Operator: DGS; Remarks: New Jersey event; MD= 2.1 STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME BVD iP 22:35:04.2 iS 22:35:14.6 BWD iPc :04.9 iS :15.5 NED iPc :07.0 iS :20.3 DATE= 861103; Operator: GIT; Remarks: (Reservoir induced, not located) Earthquake was felt near Lake Sinclair (Milledgeville, GA). Origin time: 20:00:11.63. Approximate location is LAT 33.14N, LONG 83.16W; no magnitude given STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME ATL P 20:00:30.00 S 20:00:43.45 BBG P :43.30 S :01:06.10 DCT P :50.00 S :18.00 ETT P :52.65 S :23.00 HGA S :21.00 TDA S :25.00 DATE= 861107; Operator: DGS; Remarks: Regional event? STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME NED iP 13:54:53.5 BVD iPd :54.5 BWD iPd :54.5 iS 13:55:54.5 DATE= 861123; Operator: DGS; Remarks: New Jersey event; MD= 2.8 STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME BVD iPc 21:30:02.0 iS 21:30:18.5 BWD iPc :02.2 iS :18.8 NED iPc :04.5 iS :22.1 DATE= 861124; Operator: GIT; Remarks: (Reservoir induced, not located) Earthquake was felt near Lake Sinclair (Milledgeville, GA). Approximate location is LAT 33.13N, LONG 83.12W; no magnitude given. STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME ETG P 19:59:39.60 S 19:59:41.50 BEV P :54.50 S 20:00:06.80 DATE= 861125; Operator: GIT; Remarks: (Reservoir induced, not located) Earthquake was felt near Lake Sinclair (Milledgeville, GA). Approximate location is LAT 33.13N, LONG 83.12W; no magnitude given. STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME ETG P 06:17:58.00 S 06:18:00.00 BEV P :18:12.80 S :24.90 CHF P :12.90 S :25.50 DATE= 861125; Operator: GIT; Remarks: (Reservoir induced, not located) Earthquake was felt near Lake Sinclair (Milledgeville, GA). Approximate location is LAT 33.13N, LONG 83.12W; no magnitude given. STATION PHASE ARRIVAL TIME PHASE ARRIVAL TIME ETG P 09:08:05.50 S 09:08:07.40 APPENDICES Appendix A contains definitions of most entries found in this Bulletin. Also given is a detailed listing of agencies or groups (and their letter codes) that supply information to this Bulletin. Appendix B is an alphabetical listing of stations in the Southeastern United States Seismic Network (SEUSSN) operating during the period from July through December, 1986 (network changes are found at the end of the listing). Bulletin 11 contained a complete Station Information Appendix that gave detailed information on the operators, type of seismographs, response characteristics, recording formats, etc. Subsequent bulletins have presented only changes in the network. Figure 6 is a geographic map showing the SEUSSN. 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 outlined area in Figure 6). Figures 7, 8, 9, 10 and 11 show individual networks (with station identification codes) operated by major member agencies or groups of the SEUSSN. Appendix A. Definitions and Operator Listing Some entries in this Bulletin that might require definition are: 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 and 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 expressed as the semi-major axis (ERHMAX), it's azimuth (AZ), and the semi-minor axis (ERHMIN). The vertical axis (ERZ) is the largest vertical deviation of the error ellipsoid from the hypocenter. A quality measure (Q) for the ellipsoid based on the length of the largest semi-axis (ERHMAX, ERHMIN, or ERZ) may also be supplied, 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), MD, MDB, MDL: Duration/coda length magnitude that approximates either the mb, ML, or an unknown magnitude scale, respectively; as of June 1986 (SEUSSN Bulletin 17), those using a duration magnitude approximating mb(Lg) are DGS, GIT, TEIC, and VTSO. Specifically: TEIC: 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 & 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 backgraound noise, and X is the epicentral distance in kilometers. For more information please see SEUSSN Bulletin 17 (page 1) or contact the agency making the estimate for details on their specific procedure, MEUS: Body wave magnitude determination using Evernden's formulas for the Pn phase (Evernden, 1967), 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. Q: Solution quality of the hypocenter (the average of the SQD quality measures; 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 residuals (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 agencies and groups that operate seismographs in the SEUSSN and/or who supply information to this BULLETIN follows. OPERATOR CODES BCC - Baptist College at Charleston, SC CPL - Carolina Power and Light Company, NC DGS - Delaware Geological Survey, DE DPC - Duke Power Company, SC DUP - E. I. DuPont de Nemours and Company, Inc., SC GIT - Georgia Institute of Technology, GA GSA - Geological Survey of Alabama, AL GSW - Georgia Southwestern College, GA 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 SRL - Savannah River Labs, SC TCC - Tidewater Community College, VA TEIC - Tennessee Earthquake Information Center, TN 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 WVU - West Virginia University, WV Appendix B. Seismic Stations Operating During Report Period Stations operating in the SEUSSN during the report period are listed below. A listing of operator codes with their definition may be found at the end of Appendix A. Changes to the network (new stations, stations that have been closed, etc.) may be found at the end of the station listing. Sta. Lat. N Lon. W Elev. Dates Code (Dg-Min) (Dg-Min) (M) Open-Close 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 ATL 33-26.00 84-20.25 272 6300- GIT Atlanta, GA BAV 37-13.32 80-25.50 622 7200- VTSO Blacksburg, VA BBD 39-20.50 75-40.60 18 - DGS Blackbird, DE BBG 34-52.44 83-48.66 1355 8201- TEIC Brasstown Bald, GA BCS 32-58.87 80-04.30 5 7603- BCC -USGS Baptist College, SC BENN 35-33.90 81-39.66 878 8201- TEIC Benn Knob, NC BEV 34-05.36 82-44.00 158 8006- GIT Clark Hill Res., GA BGKY 37-00.33 86-31.39 240 8308- TVA Bowling Green, KY BG3 34-59.58 82-55.90 0 - DPC Lake Jocassee, SC BHT 35-50.82 84-56.70 826 8110- SLU -TEIC Blowhole, TN BKA 33-38.03 87-58.14 122 8104- GIT -GSA Kennedy, AL BLA 37-12.68 80-25.21 634 6200- VTSO Blacksburg, VA BPVA 37-31.36 77-36.02 110 - VTSO Bon Air (Richmond), VA (Temp) BRBC 35-44.34 82-17.16 1976 8205- TEIC Mt. Mitchell, NC BRTN 36-21.40 82-52.07 630 8606- TVA Brown Mtn., TN BVD 39-46.49 75-29.96 58 8502- DGS Bellevue State Park, DE BV1 38-10.68 79-39.67 768 7811- VP -VTSO Bath County, VA BV2 38-08.20 79-55.17 610 7811- VP -VTSO Bath County, VA BV3 38-14.30 79-46.00 750 7811- VP -VTSO Bath County, VA BV4 38-21.43 79-49.67 814 7903- VP -VTSO Pocahontas County, WV BWD 39-47.96 75-34.60 63 8502- DGS Brandywine State Park, DE CBN 38-12.30 77-22.40 70 7100- USGS Corbin, VA CBT 35-32.36 84-25.24 357 8204- GIT Christianburg, TN CCS 32-48.97 80-15.32 3 7603- BCC -USGS Cawcaw Swamp, SC CCVA 36-36.18 83-40.02 571 8211- TEIC Cudjo Cave, VA CDG 34-36.65 84-40.00 333 - GIT Carters Dam, GA CEH 35-53.45 79-05.57 152 7508- UNC Chapel Hill, NC CHF 34-01.48 82-35.20 152 7702- GIT Calhoun Falls, SC CH5 33-43.99 82-18.71 114 7604- GIT Clark Hill Res., GA CH6 33-53.63 82-31.75 130 7604- GIT Clark Hill Res., GA CNV 38-12.30 77-22.40 70 7807- VTSO Corbin, VA COW 33-23.05 80-42.05 33 7710- USC -USGS Cow Castle Creek, SC CPO 35-36.23 85-34.41 570 8404- TVA Cumberland Plateau (V5), TN CRG 34-39.53 84-34.93 422 8010- GIT Carters Dam, GA 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 DCT 35-03.25 84-25.16 508 8204- GIT Ducktown, TN DRC 33-06.00 80-23.52 10 - BCC -USGS Dorchester, SC EP1 33-57.08 82-30.82 134 7700- GIT Clark Hill Res., GA ETT 35-19.56 84-27.30 588 8111- TEIC Etowah, TN FRV 37-12.18 78-21.56 216 7812- VTSO Farmville, VA GAI 29-38.75 82-20.36 51 7711- UFL Gainesville, FL GBTN 35-39.96 84-12.66 326 8303- TEIC Greenback, TN GBV 38-25.93 79-50.72 802 7711- NASA Green Bank, WV GFM 36-06.66 81-48.42 1726 8205- TEIC Grandfather Mtn., NC GHV 37-47.65 78-06.44 107 7810- VTSO Goochland, VA GLT 36-21.72 86-29.88 159 8111- TEIC-VCSS Gallatin, TN GMG 34-50.16 84-40.20 1097 8509- TEIC Grassy Mtn., GA GTD 38-44.48 75-24.86 15 - DGS Georgetown, DE HBF 32-55.98 80-22.68 10 7303- USC -USGS Harts Bluff, SC HGA 34-15.61 85-50.78 384 8104- GIT -GSA Collinsville, AL HPK 35-55.56 83-52.74 305 8003- GIT -TVA Knoxville, TN HVA 34-01.58 86-46.15 195 8104- GIT -GSA Hanceville, AL HWD 32-44.52 80-17.22 3 - BCC -USGS Hollywood, SC HWV 37-35.43 80-50.45 521 7804- VTSO Hinton, WV IVA 34-16.33 82-44.76 168 8006- GIT Clark Hill Res., GA JSC 34-16.74 81-15.48 120 7405- USC -USGS Jenkinsville, SC LDV 34-08.87 82-41.00 162 8006- GIT Clark Hill Res., GA LEX 37-47.36 79-26.50 311 7105- WAL Lexington, VA LHS 34-28.74 80-48.48 120 7405- USC -USGS Liberty Hill, SC LKGA 34-37.40 85-28.33 655 8512- TVA Lookout Mtn., GA LMTN 35-53.21 83-24.59 610 8403- TVA Little Mtn., TN LPM 34-58.75 83-01.46 0 - DPC Lake Jocassee, SC MGS 32-53.82 80-08.45 3 7603- BCC -USGS Middleton Gardens, SC MLA 32-42.33 87-41.62 55 8104- GIT -GSA Sawyerville, AL 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 - USC -SCEG Monticello Res., SC MR07 34-22.23 81-19.50 134 7807- USC -SCEG Monticello Res., SC MR08 34-24.53 81-24.55 112 7807- USC -SCEG Monticello Res., SC MR10 34-20.18 81-20.25 137 7807- USC -SCEG Monticello Res., SC MR6A 34-17.32 81-18.15 145 - USC -SCEG Monticello Res., SC MR9A 34-17.24 81-19.75 145 - USC -SCEG Monticello Res., SC MSAL 34-50.80 86-40.41 260 8307- TVA Monte Sano, AL MTT 33-45.08 81-38.17 150 - USC -USGS Monetta, SC NATN 35-51.37 88-14.40 198 8503-8703 TVA Natchez Trace State Park, TN NAV 37-18.94 80-47.61 610 7710- VTSO Narrows, VA NA2 38-07.62 77-44.82 82 7810- VTSO-VP North Anna, VA NA5 38-00.65 77-44.19 76 7808- VTSO-VP North Anna, VA NA12 37-58.98 77-52.77 125 7808- VTSO-VP North Anna, VA NED 39-42.25 75-42.49 47 - DGS Newark, DE OCA 34-36.83 86-26.11 250 8104- GIT -GSA Owens Crossroads, AL ONTN 36-28.89 84-26.60 635 8402- TVA Oneida, TN ORT 35-54.57 84-18.29 370 7500- TVA Oak Ridge, TN OSB 33-32.83 80-50.66 80 7704- USC -USGS Orangeburg, SC PBF 32-51.77 79-45.64 -68 8108- BCC -USGS Porcher Bluff, SC PBS 33-16.74 80-15.84 25 - USC -USGS Pigeon Bay, SC 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- TEIC Pores Knob, NC PLVA 36-39.98 81-09.63 1353 8211- TEIC Point Lookout, VA PRM 34-05.00 82-21.80 170 7507- USC -USGS Parsons Mtn., SC PUV 37-01.41 80-48.95 652 7802- VTSO Pulaski, VA PWLA 34-58.80 88-03.84 204 8005- TEIC- 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- TEIC Richland Balsam, NC RCG 34-58.50 85-20.88 468 8110- TEIC Rock City, GA RCT 35-20.72 84-39.68 265 8204- GIT Riceville, TN RGR 32-54.33 80-11.63 0 8600- USC -USGS (Roger Stewart) SC RHT 35-04.69 84-52.95 299 8204- GIT Red Hill, TN RICH 35-55.20 82-49.20 967 8306- TEIC Rich Mtn., NC RMG 34-20.15 85-18.96 337 7707- GIT Rocky Mtn. Net, GA RNC 35-37.92 78-58.82 86 7709- CPL Raleigh, NC RNC2 35-33.28 78-59.38 75 - CPL Raleigh, NC RNC3 35-35.60 78-54.27 95 - CPL Raleigh, NC RNC4 35-39.95 78-54.27 93 - CPL Raleigh, NC SGS 33-11.58 80-30.72 25 7303- USC -USGS St. George, SC SHTN 35-27.58 87-07.78 323 8509- TVA Sandy Hook, TN SLTN 36-26.59 82-07.23 1280 8401- TVA Sullivan County, TN SMG 34-20.97 85-20.78 314 7905- GIT Rocky Mtn. Net, GA SMT 34-55.85 82-58.26 498 7704- USC Smeltzer Mtn. (Jocassee), SC SMTN 36-22.92 83-10.92 768 8210- TEIC Short Mtn., TN SRPD 33-09.30 81-42.75 31 7608- DUP Savannah River Lab, SC SRPN 33-19.74 81-35.33 95 7608- DUP Savannah River Lab, SC SRPW 33-12.14 81-34.69 77 7608- DUP Savannah River Lab, SC SSKY 36-47.73 85-47.55 300 8304-8703 TVA Summer Shade, KY SVS 32-58.13 80-14.92 3 7603- BCC -USGS Slandsville, SC TDA 33-32.50 86-01.48 181 8104- GIT -GSA Talladega, AL TKL 35-39.48 83-46.44 350 7800- TEIC-TVA Tuckaleechee Caverns, TN TLT 35-18.07 84-17.00 512 8204- GIT Tellico Plains, TN TQTN 35-30.96 84-43.55 260 8607- TVA Tranquillity, TN TRK 33-07.33 79-46.67 10 - USC -USGS Turkey Creek, SC TRYN 35-14.76 82-16.02 915 8303- TEIC Tryon Peak, NC TSA 33-15.37 87-04.05 180 8104- GIT -GSA Tannehill State Park, AL TVG 34-22.63 85-18.14 323 7905- GIT Rocky Mtn. Net, GA VBV 36-47.12 76-06.48 5 7705- TCC Virginia Beach, VA VEW 32-43.06 79-56.49 -68 8108- USC -USGS Oceanview, SC VRN 33-02.25 80-56.50 30 - USC -USGS Varneville, SC VWV 37-27.96 80-23.50 963 8207- VTSO VA-WV Border WAS 32-54.48 80-15.78 3 - BCC -USGS West Ashley, SC WMTN 35-14.88 84-58.39 378 8507- TVA White Oak Mtn., TN WMV 37-06.51 80-58.23 1157 8210- VTSO Walker Mtn., VA WSSR 35-16.68 83-34.68 1340 8510- TEIC Wesser Bald, NC ZIN 33-06.43 80-09.77 10 7710- BCC -USGS Mt. Zion Church, SC CHANGES TO THE SEUSSN STATION LISTING Sta. Code Locality Operator Change BFMT Birch Field Mtn, TN TEIC Closed, Nov. 1985 BKHT Bunker Hill, TN TEIC Closed, Nov. 1985 BRTN Brown Mountain, TN TVA Opened, June 1986 BSPT Big Springs, TN TEIC Closed, Nov. 1985 CCRT Cow Camps Ridge, TN TEIC Closed, Nov. 1985 CHTN Church Hills, TN TVA Closed, Jan. 1986 CSPT Cold Spring, TN TEIC Closed, Nov. 1985 LCAL Lambert Chapel, AL TVA Closed, Dec. 1985 LKGA Lookout Mt., GA TVA Opened, Dec. 1985 LRKT Look Rock, TN TEIC Closed, Nov. 1985 NA11 North Anna, VA VTSO Closed, May 1986 TQTN Tranquillity, TN TVA Opened, July 1986 UGRT Union Grove, TN TEIC Closed, Nov. 1985 TEMPORARY SEUSSN STATION LISTING Sta. Code Locality Operator Change BPVA Richmond, VA VTSO Opened/Closed FIGURE 6. Seismic Stations (Open Triangles) Operating in the SEUSSN from July through December 1986. The SEUSSN monitoring area is outlined. FIGURE 7. Georgia Tech - Geological Survey Of Alabama Seismic Network. FIGURE 8. South Carolina Seismic Network. FIGURE 9. Tennessee Earthquake Information Center - Southern Appalachian Regional Seismic Network. FIGURE 10. Tennessee Valley Authority Seismic Network. FIGURE 11. Virginia Tech Seismic Network. Appendix C. Errata and Addenda Bulletin 16 listed an event on June 19, 1985 at 22:28. This was actually a roof collapse in a coal mine in Buchanan County, Virginia. The following reservoir event occurred during the Bulletin 18 report period: ***** 11 JUNE 1986; 16:21 - LAKE KEOWEE, SOUTH CAROLINA ***** Oper Origin Lat-N Lon-W Dep MDL NO Gap RMS ERH ERZ Q SQD USC 162137.73 34.790 82.924 4.9 2.0 5 287 0.01 2.5 13.1 D C/D STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BG3 22.5 358 Pu 16:21:41.54 ( 0.02 ) S 16:21:44.24 (-0.01 ) LPM 22.9 336 Pu :41.56 (-0.02 ) S :44.36 ( 0.01 ) TRYN 78.5 50 iP :50.50 ( 0.00 ) S :22:00.40 ( 0.70X) TKL 123.6 321 eP :58.20 ( 0.42X) GFM 178.2 35 eP :22:06.75 ( 0.57X) MAILING LIST