BULLETIN NUMBER 20 TABLE OF CONTENTS PAGE SOUTHEASTERN U. S. EARTHQUAKES: JANUARY THROUGH JUNE 1987................ 1 Acknowledgments........................................................ 2 References............................................................. 2 SEUSSN EARTHQUAKE CATALOG STATISTICS..................................... 11 Focal Depth Distribution............................................... 13 Magnitude Recurrence and Completeness Estimates........................ 15 HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR SOUTHEASTERN U.S. EARTHQUAKES: JANUARY THROUGH JUNE 1987.............. 19 HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR RESERVOIR ASSOCIATED SEISMICITY: JANUARY THROUGH JUNE 1987............ 57 ADDITIONAL UNLOCATED EVENTS: JANUARY THROUGH JUNE 1987.................. 63 APPENDICES............................................................... 65 Appendix A. Definitions and Operator Listing.......................... 67 Appendix B. Seismic Stations Operating During Report Period........... 69 MAILING LIST............................................................. 81 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 June 1987......................................................... 7 4. Earthquake Epicenter Map for the Period from July 1977 through June 1987 (Scaled to Magnitude, M ge 3.0)......................... 9 5. Focal Depth Distribution of Southeastern U.S. Earthquakes........... 13 6. Magnitude Recurrence Relation For The Southeastern United States.... 15 7. Magnitude Recurrence Relation For The Southeastern United States With Confidence Intervals......................................... 17 8. Seismic Stations Operating During Report Period..................... 73 9. Georgia Tech - Geological Survey Of Alabama Seismic Network......... 75 10. South Carolina Seismic Network...................................... 75 11. Tennessee Earthquake Information Center - Southern Appalachian Regional Seismic Network.............................. 77 12. Tennessee Valley Authority Seismic Network.......................... 77 13. Virginia Tech Seismic Network....................................... 79 TABLES 1. SEUSSN Report Period/Cumulative Earthquake Catalog Statistics....... 11 2. Estmates Of Completeness For The Southeastern United States......... 17 SOUTHEASTERN U. S. EARTHQUAKES: JANUARY THROUGH JUNE 1987 There were 71 earthquakes (0.0 le M le 4.2) located within the SEUSSN monitoring area during the first six months of 1987. Of those, one in Tennessee (27 March, mb(Lg)= 4.2, MMI= VI), and one in Virginia (13 January, MDB= 1.9, MMI= IV) were felt. Southeastern Tennessee continues to have the highest level of seismic activity within the region. Earthquakes reported include 3 in Alabama, 6 in Georgia, 3 in Kentucky, 1 in North Carolina, 8 in South Carolina, 46 in Tennessee, and 4 in 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 10 year period from July 1977 through June 1987 (SEUSSN Bulletins 1 through 20). The SEUSSN earthquake statistics section includes general catalog statistics (page 11), focal depth distribution plots (page 13), a magnitude recurrence relation (page 15), and estimates of catalog completeness (page 17). The largest earthquake for the report period was a mb(Lg) = 4.2 event (27 March) that was felt (epicentral MMI= VI) in eastern Tennessee, northern Georgia, and western North Carolina. Nineteen aftershocks (M le 2.7) were identified and located following this event. Also of interest was a continuation of the December 1986 swarm of small magnitude events that were felt within a four block area of downtown Richmond, Virginia (MDB= 1.9; MMI= IV; 13 January; see also SEUSSN Bulletin 19). There were 17 reservoir related earthquakes (0.0 le M le 2.6) during the first six months of 1987. Most of those events occurred during the first three months of the year, but they were spatially well distributed with seven at Lake Sinclair, Georgia (three of which were felt locally); four each at Lake Keowee and Lake Monticello, South Carolina; and two at Lake Jocassee, on the South Carolina-North Carolina border. Acknowledgments This report is the twentieth semiannual BULLETIN OF SEISMICITY OF THE SOUTHEASTERN UNITED STATES and covers the period from January through June, 1987. 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 Bollinger, G. A., and Frederick C. Davison, Jr., 1987a, MAGNITUDE RECURRENCE RELATIONS FOR THE SOUTHEASTERN U. S. - PRELIMINARY RESULTS, Seismological Research Letters, 58, No. 3, in-press (Abstract) Bollinger, G. A., Frederick C. Davison, Jr., and Matthew S. Sibol, 1987b, MAGNITUDE RECURRENCE RELATIONS FOR THE SOUTHEASTERN U. S. - REGIONAL, PROVINCIAL, AND ZONAL, in preparation. 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 January through June 1987. FIGURE 2. Epicenters (Open Circles - Scaled to Event Magnitude) for Earthquakes (M ge 0.0) in the Southeastern United States from January through June 1987. FIGURE 3. Epicenters (Open Circles) for Earthquakes (M ge 0.0) in the Southeastern United States from July 1977 through June 1987. FIGURE 4. Epicenters (Open Circles - Scaled to Event Magnitude) for Earthquakes (M ge 3.0) in the Southeastern United States from July 1977 through June 1987. SEUSSN EARTHQUAKE CATALOG STATISTICS TABLE 1 SEUSSN Report Period/Cumulative Earthquake Catalog Statistics Period: January through June 1987 (0.5 years) Tectonic Reservoir Number of Earthquakes with M ge 0.0 71 17 Number of Earthquakes with M ge 2.5 9 1 Number of Earthquakes with M ge 3.5 1 0 Mean Earthquake Magnitude 1.3 1.6 Median Earthquake Magnitude 1.3 1.6 Number of Felt Earthquakes 2 3 Number of Earthquakes with Known Dmin le 25.0 km 56 13 Number of Earthquakes with Known ERH le 5.0 km 71 14 Number of Earthquakes with Known ERZ le 5.0 km 60 13 Largest Earthquake Reported...........27 March 1987; 07:29 - Vonore, TN mb(Lg) = 4.2, MDB = 4.2, MMI = VI Number of Blasts or Poorly Located Events Reported 7 Number of Events Outside the SEUSSN Area Reported 0 Number of Seismograph Stations Operating 149 ----- Period: July 1977 through June 1987 (10 years) Tectonic Reservoir Number of Earthquakes with M ge 0.0 639 637 Number of Earthquakes with M ge 2.5 134 53 Number of Earthquakes with M ge 3.5 14 1 Mean Earthquake Magnitude 1.8 1.4 Median Earthquake Magnitude 1.8 1.4 Number of Felt Earthquakes 85 6 Number of Earthquakes with Known Dmin le 25.0 km 347 105 Number of Earthquakes with Known ERH le 5.0 km 538 134 Number of Earthquakes with Known ERZ le 5.0 km 452 104 Largest Earthquake Reported.........July 27, 1980; 18:52 - Sharpsburg, KY mb = 5.2, MMI = VII Number of Blasts or Poorly Located Events Reported 168 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 June 1987 (M ge 0.0, ERZ le 5.0 km, and free depth determination). 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. MAGNITUDE RECURRENCE AND COMPLETENESS ESTIMATES FIGURE 6. Magnitude Recurrence Relation For The Southeastern U. S. The upper half of the figure shows the seismicity map with historical (circles) and network (X's) epicenters. The lower half of the figure shows the recurrence relation with NI= incremental number of earthquakes per year; N= number of earthquakes after aftershock removal; M= number of earthquakes after completeness estimation (Source: Bollinger and others, 1987a, b). FIGURE 7. Magnitude Recurrence Relation For The Southeastern U. S. With Confidence Intervals. 95%= short dashes; 90%= solid line; 70%= long dashes; X's= data points, same as in Figure 6 (Source: Bollinger and others, 1987a, b). TABLE 2 Completeness Estimates In Years And By Magnitude For The Southeastern U. S. (Source: Bollinger and Others, 1987a, b) MAGNITUDE:............2.25 2.75 3.25 3.75 4.25 4.75 5.25 5.75 6.25 6.75 Southeastern U. S..... 6 8 4 8 44 100 110 70 140 140 Coastal Plain .... 10 10 75 130 135 140 140 140 140 140 Piedmont .... 10 25 25 40 140 140 140 140 140 140 Valley & Ridge and Blue Ridge .... 9 15 15 105 130 140 140 140 140 140 Giles County, VA .... 10 15 30 30 30 50 140 140 140 140 Central Virginia .... 14 110 135 130 130 100 140 140 140 140 Eastern Tennessee .... 9 10 15 40 115 105 140 140 140 140 Charleston, SC .... 15 70 140 120 125 140 140 140 140 140 HYPOCENTRAL PARAMETERS, MAGNITUDES, AND ARRIVAL TIMES FOR SOUTHEASTERN U. S. EARTHQUAKES: JANUARY THROUGH JUNE 1987 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. ***** 2 JANUARY 1987; 04:10 - DECATUR, TENNESSEE ***** *TEIC OT= 04:10:27.42 LAT= 35.603N LON= 84.849W DEP= 19.1 KM MDB= 1.4 NO= 26, GAP= 63 DEG, RMS= 0.16 SEC, SDOT= 0.05 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -27 DEG; ERHMIN= 0.3 KM; ERZ= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TQTN 14.8 131 iPc 04:10:31.40 (-0.07 ) iS 04:10:34.45 ( 0.02 ) WMTN 41.0 196 eP :34.98 ( 0.07 ) iS :40.42 ( 0.03 ) ETT 47.1 131 eP :35.80 (-0.05 ) eS :42.00 ( 0.00 ) GBTN 58.2 83 eP :37.40 (-0.08 ) iS :44.90 ( 0.07 ) ORT 59.8 55 eP :37.77 ( 0.05 ) eS :45.60 ( 0.35 ) CPO 65.7 270 eP :38.55 (-0.08 ) eS :46.92 ( 0.11 ) ANTN 71.9 331 eP- :39.40 (-0.19 ) eS :48.49 ( 0.00 ) GMG 83.7 169 eP :41.39 (-0.05 ) eS :51.42 (-0.26 ) TKL 97.6 86 eP :44.00 ( 0.52 ) iS :55.11 (-0.10 ) PDTN 97.9 248 eS :55.71 ( 0.40 ) ONTN 104.1 20 eP :44.12 (-0.39 ) eS :56.75 (-0.23 ) ABTN 118.2 286 eP :46.81 ( 0.17 ) eS :11:01.00 ( 0.32 ) LKGA 122.6 208 eP :47.84 ( 0.50 ) BBG 124.4 130 eP :48.00 ( 0.33 ) eS :01.50 (-0.95X) SSKY 157.2 328 eP :53.10 ( 0.50 ) SMTN 173.4 60 eS :17.00 ( 1.66X) SHTN 207.5 266 eS :24.50 ( 0.21X) ***** 11 JANUARY 1987; 12:37 - NORTHERN GEORGIA; PROBABLE BLAST ***** *GIT this event is probably a blast *TEIC/TVA this event is probably a blast *TEIC location for informational purposes only *TEIC OT= 12:37:17.58 LAT= 34.205N LON= 84.453W DEP= 1.2 KM MDB= 2.0 NO= 22, GAP= 286 DEG, RMS= 0.41 SEC, SDOT= 0.34 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 3.1 KM, AZ= 22 DEG; ERHMIN= 1.2 KM; ERZ= 4.6 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GMG 75.7 345 eP 12:37:31.00 ( 0.17 ) eS 12:37:40.22 (-0.27 ) BBG 94.8 38 eP :33.60 (-0.40 ) eS :45.70 (-0.28 ) ETT 124.4 360 eP :39.40 ( 0.68 ) eS :54.10 (-0.06 ) WSSR 143.5 34 iP :41.45 (-0.27 ) eS :59.61 ( 0.27 ) GBTN 163.6 8 iP :44.50 (-0.21 ) eS :38:03.40 (-1.11 ) TKL 172.7 21 iP :45.55 (-0.56 ) S :07.72 ( 0.79 ) RBNC 185.4 46 eP :48.05 (-0.12 ) eS :11.43 ( 0.93 ) TRYN 233.9 59 iP :56.00 ( 0.47 ) eS :23.10 (-0.13 ) RICH 241.6 38 ePc :57.20 ( 0.49 ) eS :26.72 ( 1.44X) BRBC 261.0 49 eP :59.85 ( 0.15 ) eS :31.50 ( 1.05 ) SMTN 267.8 25 eP :38:00.70 ( 0.32 ) eS :31.90 ( 0.28 ) CCVA 275.5 15 eS :33.88 ( 0.70 ) BENN 296.5 59 eS :40.45 ( 2.74X) ***** 12 JANUARY 1987; 06:00 - DAUS, TENNESSEE ***** *TEIC OT= 06:00:23.61 LAT= 35.283N LON= 85.448W DEP= 9.7 KM MDB= 1.8 NO= 36, GAP= 65 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= 25 DEG; ERHMIN= 0.3 KM; ERZ= 1.0 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCG 35.3 165 ePc 06:00:30.10 ( 0.19 ) eS 06:00:34.30 (-0.20 ) PDTN 36.6 268 eP+ :30.19 ( 0.08 ) iS :34.81 (-0.04 ) CPO 37.4 342 iPc :30.39 ( 0.13 ) iS :35.05 (-0.06 ) WMTN 43.4 95 eP :31.40 ( 0.18 ) eS :36.43 (-0.35 ) RHT 56.3 114 eP :34.10 ( 0.75 ) eS :40.90 ( 0.45 ) TQTN 70.5 68 eP+ :35.40 (-0.28 ) eS :43.85 (-0.63 ) RCT 71.9 84 eS :45.00 ( 0.12 ) LKGA 73.2 182 eP :35.99 (-0.16 ) eS :44.55 (-0.74 ) GMG 84.9 123 eP :38.20 ( 0.11 ) eS :47.90 (-0.76 ) ABTN 89.8 318 ePc :38.72 (-0.06 ) eS :49.17 (-0.68 ) ETT 90.4 87 eP :39.40 ( 0.50 ) iS :50.00 (-0.05 ) ANTN 100.5 11 eP :40.39 (-0.06 ) eS :52.57 (-0.17 ) TVG 101.4 172 eP :41.00 ( 0.45 ) eS :52.70 (-0.21 ) GBTN 120.1 69 eP :44.60 ( 1.19X) eS :58.50 ( 0.64 ) MSAL 121.8 247 eP :43.78 ( 0.11 ) eS :58.46 ( 0.14 ) SHTN 154.1 278 eP :49.00 ( 0.38 ) eS :01:07.00 ( 0.12 ) BBG 156.0 106 eP :49.00 (-0.01 ) eS :07.00 (-0.55 ) TKL 157.5 74 eP :49.50 ( 0.35 ) eS :08.00 ( 0.21 ) WSSR 170.1 90 eP :51.70 ( 0.53 ) iS :11.40 ( 0.11 ) RBNC 224.0 87 eP :01:00.00 ( 0.54X) eS :26.20 ( 0.56X) PWLA 240.8 263 eP :03.00 ( 1.11X) eS :30.00 ( 0.17X) ----- *GIT OT= 06:00:24.7 LAT= 35.248N LON= 85.432W DEP= 13.8 KM MDB= 1.4 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= 74 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCG 31.3 166 P 06:00:30.10 (-0.18 ) S 06:00:34.30 (-0.10 ) RHT 53.5 111 P :33.80 ( 0.08 ) S :41.05 ( 0.70 ) RCT 70.8 81 S :45.00 (-0.09 ) GMG 81.7 122 P :38.20 ( 0.01 ) S :47.90 (-0.19 ) ETT 89.2 85 P :39.00 (-0.38 ) S :50.00 (-0.16 ) TVG 97.4 173 P :40.85 ( 0.17 ) S :52.50 ( 0.09 ) GBTN 119.9 67 P :44.60 ( 0.34 ) S :58.50 (-0.11 ) ***** 12 JANUARY 1987; 18:56 - MADISONVILLE, TENNESSEE ***** *TEIC OT= 18:56:02.90 LAT= 35.508N LON= 84.253W DEP= 16.0 KM MDB= 2.1 NO= 43, GAP= 41 DEG, RMS= 0.21 SEC, SDOT= 0.04 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= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 18.0 12 iP 18:56:07.00 ( 0.00 ) iS 18:56:10.00 ( 0.02 ) TLT 23.1 187 eP :07.90 ( 0.20 ) ETT 27.3 222 iPd :08.50 ( 0.22 ) iS :12.20 ( 0.00 ) RCT 41.3 244 eP :10.40 ( 0.07 ) eS :15.50 (-0.25 ) TQTN 42.9 271 eP :10.64 ( 0.06 ) eS :15.84 (-0.34 ) ORT 44.8 354 eP :11.00 ( 0.13 ) iS :16.35 (-0.34 ) TKL 46.5 69 iPc :11.00 (-0.12 ) iS :17.00 (-0.12 ) DCT 52.6 197 eP :11.90 (-0.18 ) eS :17.90 (-0.88X) HPK 57.4 36 eP :13.15 ( 0.35 ) eS :19.70 (-0.32 ) WSSR 66.4 112 eP+ :14.49 ( 0.22 ) eS :22.40 (-0.17 ) WMTN 71.6 246 eP :14.97 ( 0.00 ) eS :23.54 (-0.24 ) BHT 73.1 301 eP :15.50 ( 0.25 ) eS :24.30 ( 0.04 ) RHT 74.5 230 eP :15.80 ( 0.38 ) eS :24.50 (-0.05 ) BBG 81.0 150 iPc :16.50 (-0.01 ) eS :26.00 (-0.44 ) GMG 81.1 208 eP :16.20 (-0.29 ) eS :26.10 (-0.31 ) CRTN 85.3 26 eP :17.33 ( 0.24 ) eS :27.64 ( 0.20 ) ONTN 109.4 351 eP :20.64 (-0.14 ) eS :33.81 (-0.03 ) ANTN 115.1 310 eP :21.70 ( 0.05 ) eS :35.76 ( 0.42 ) RBNC 116.2 98 eP :22.40 ( 0.46 ) eS :36.10 ( 0.26 ) CPO 120.2 275 eS :36.88 ( 0.18 ) SMTN 136.9 45 iP :25.50 ( 0.49 ) eS :41.70 ( 0.56 ) RICH 137.5 70 eP :25.20 ( 0.08X) eS :42.00 ( 0.66X) LKGA 148.3 229 eP :26.93 ( 0.18 ) TVG 157.9 218 eP :29.00 ( 0.82X) eS :48.30 ( 1.66X) ABTN 173.2 285 eP :31.00 ( 0.47 ) TRYN 184.3 98 eP :32.50 ( 0.22 ) eS :54.00 ( 0.28 ) PLVA 306.7 64 eS :57:23.00 ( 0.65X) ----- *GIT OT= 18:56:03.3 LAT= 35.503N LON= 84.250W DEP= 14.8 KM MDB= 2.1 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -46 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 18.4 11 P 18:56:07.00 (-0.12 ) S 18:56:10.00 ( 0.04 ) TLT 22.6 188 P :07.90 ( 0.22 ) ETT 27.1 224 P :08.50 ( 0.19 ) S :12.20 ( 0.19 ) RCT 41.3 245 P :10.40 (-0.03 ) S :15.50 (-0.19 ) TKL 46.4 68 P :11.00 (-0.21 ) S :17.00 (-0.04 ) DCT 52.1 197 P :11.90 (-0.20 ) S :17.90 (-0.69 ) WSSR 66.0 112 P :14.49 ( 0.20 ) S :22.40 ( 0.02 ) BHT 73.5 301 P :15.50 ( 0.04 ) S :24.30 (-0.11 ) RHT 74.5 231 P :15.80 ( 0.17 ) S :24.50 (-0.20 ) GMG 80.8 208 P :16.20 (-0.42 ) S :26.10 (-0.32 ) TVG 158.0 218 P :29.00 ( 0.15 ) S :48.30 ( 0.68 ) ***** 13 JANUARY 1987; 10:56 - VONORE, TENNESSEE ***** *TEIC OT= 10:56:30.09 LAT= 35.561N LON= 84.179W DEP= 9.0 KM MDB= 0.3 NO= 7, GAP= 150 DEG, RMS= 0.22 SEC, SDOT= 0.58 SEC, Q= C, SQD= C/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 3.3 KM, AZ= -30 DEG; ERHMIN= 0.8 KM; ERZ= 9.0 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 12.0 346 iP 10:56:32.80 ( 0.09 ) iS 10:56:34.60 (-0.02 ) ETT 36.2 224 eP :37.10 ( 0.57 ) iS :41.00 (-0.22 ) TKL 38.2 74 eP :36.50 (-0.33 ) iS :41.71 (-0.05 ) WSSR 62.9 120 eS :49.18 ( 0.27 ) ***** 13 JANUARY 1987; 11:11 - NORTHEASTERN KENTUCKY ***** *TEIC location for informational purposes only *TEIC OT= 11:11:38.82 LAT= 38.340N LON= 83.415W DEP= 25.8 KM MDB= 2.3 NO= 23, GAP= 191 DEG, RMS= 0.22 SEC, SDOT= 0.11 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.6 KM, AZ= -8 DEG; ERHMIN= 0.4 KM; ERZ= 1.3 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PKKY 33.6 82 iP 11:11:45.70 ( 0.00 ) BHKY 101.3 251 iP :55.25 (-0.29 ) eS 11:11:07.35 (-0.40 ) L6KY 131.5 250 eP :12:00.40 ( 0.28 ) eS :15.90 ( 0.23 ) CCVA 194.1 187 eP :09.69 (-0.02 ) eS :34.20 ( 1.93X) SMTN 218.3 175 eP :13.40 ( 0.45 ) eS :38.00 ( 0.13 ) BRTN 225.4 167 eP :13.34 (-0.46 ) eS :40.52 ( 1.18X) ONTN 225.5 204 eP :13.69 (-0.12 ) eS :41.93 ( 2.57X) SLTN 239.7 151 eP :15.00 (-0.49X) CRTN 240.5 189 eP- :15.26 (-0.37 ) eS :43.19 ( 0.68 ) SOKY 241.7 249 iP :15.50 (-0.21 ) eS :42.80 ( 0.15 ) PLVA 272.5 132 eS :49.20 (-0.26 ) RICH 273.8 169 eP :19.49 (-0.28 ) ORT 281.1 197 eS :54.65 ( 3.59X) ANTN 289.6 214 eP :22.01 ( 0.36 ) eS :55.11 ( 2.19X) TKL 299.4 186 eP :22.67 (-0.14 ) eS :55.00 ( 0.08 ) GBTN 305.1 194 eP :23.40 (-0.10 ) eS :56.90 ( 0.78 ) PKNC 324.0 141 iP :26.00 ( 0.13 ) iS :12:00.59 ( 0.37 ) TQTN 334.4 201 eP :27.30 ( 0.21X) WSSR 340.1 183 eP :28.11 ( 0.18X) ETT 347.1 196 eS :05.10 ( 0.03X) ABTN 362.6 222 eP :30.70 ( 0.15X) eS :10.19 ( 1.88X) BBG 386.2 185 eP :33.80 ( 0.24X) eS :15.20 ( 1.68X) SHTN 460.1 227 eP :42.90 ( 0.44X) eS :31.40 ( 2.49X) ***** 13 JANUARY 1987; 14:50 - RICHMOND, VIRGINIA ***** *VTSO Intensity IV and III effects reported throughout Richmond, VA. This event is a continuation of a series of extremely small magnitude events that have been felt in Richmond from December, 1986 through January, 1987. 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). *VTSO OT= 14:50:40.87 LAT= 37.584N LON= 77.465W DEP= 2.5FXD KM MDB= 1.9 NO= 11, GAP= 207 DEG, RMS= 0.12 SEC, SDOT= 0.11 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= 83 DEG; ERHMIN= 0.2 KM; ERZ= 12.7 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NA12 57.4 321 iPd 14:50:50.39 ( 0.09 ) eS 14:50:57.05 (-0.13 ) GHV 61.3 293 iPd :51.03 ( 0.09 ) eS :58.19 (-0.10 ) NA2 65.1 338 iPd :51.56 (-0.01 ) eS :59.22 (-0.17 ) PBV 67.1 185 eP :52.00 ( 0.11 ) eS :59.72 (-0.21 ) FRV 89.8 242 P :55.65 ( 0.03 ) S :51:06.37 (-0.02 ) CVL 98.2 297 eP :57.37 ( 0.38 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 14:50:57.0 Sg 14:51:08.9 ***** 16 JANUARY 1987; 14:41 - RODDY, TENNESSEE ***** *TEIC OT= 14:41:54.91 LAT= 35.845N LON= 84.800W DEP= 17.9 KM MDB= 0.9 NO= 21, GAP= 144 DEG, RMS= 0.15 SEC, SDOT= 0.08 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= 21 DEG; ERHMIN= 0.3 KM; ERZ= 2.3 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TQTN 37.1 170 ePc 14:42:01.79 ( 0.02 ) eS 14:42:06.63 (-0.16 ) ORT 45.3 81 eP :03.05 ( 0.05 ) eS :09.02 ( 0.12 ) ANTN 53.1 313 eP :04.15 (-0.06 ) eS :11.10 ( 0.11 ) GBTN 56.9 110 eP :04.50 (-0.25 ) iS :12.00 ( 0.06 ) ETT 65.5 151 eP :06.00 (-0.09 ) eS :14.30 ( 0.04 ) WMTN 68.1 193 eS :15.23 ( 0.34 ) CPO 74.9 249 eS :16.59 (-0.13 ) ONTN 77.6 24 eS :17.10 (-0.34 ) TKL 95.1 102 eP :11.10 ( 0.51 ) eS :22.08 ( 0.05 ) GMG 109.6 174 eS :25.75 (-0.24 ) PDTN 114.3 237 eS :27.36 ( 0.25X) ABTN 118.3 273 eS :28.73 ( 0.57 ) WSSR 127.4 119 eS :30.77 ( 0.02 ) BBG 140.3 140 iP :17.60 ( 0.01 ) eS :34.00 (-0.15 ) SMTN 157.4 67 eS :38.00 (-0.58 ) ***** 17 JANUARY 1987; 10:12 - WHITE HOLLOW, TENNESSEE ***** *TEIC OT= 10:12:03.46 LAT= 36.253N LON= 83.995W DEP= 26.0 KM MDB= 0.0 NO= 13, GAP= 310 DEG, RMS= 0.11 SEC, SDOT= 0.12 SEC, Q= C, SQD= A/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= 22 DEG; ERHMIN= 0.3 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CRTN 15.1 113 iPc 10:12:08.41 (-0.02 ) eS 10:12:12.05 (-0.01 ) ORT 47.2 216 eS :18.82 ( 0.20 ) ONTN 47.5 302 eS :18.71 (-0.05 ) LMTN 66.6 127 eS :23.47 (-0.01 ) GBTN 67.9 197 eS :23.60 (-0.18 ) TKL 68.9 163 eP :15.31 (-0.05 ) iS :24.00 (-0.04 ) SMTN 74.4 79 eS :25.60 ( 0.09 ) BHT 96.7 243 eS :32.00 ( 0.68 ) BRTN 101.9 83 eS :33.43 ( 0.77 ) RICH 112.2 109 eS :35.92 ( 0.51 ) WSSR 114.6 161 eS :36.12 ( 0.03 ) ***** 27 JANUARY 1987; 10:10 - CENTRAL NORTH CAROLINA ***** *TEIC location for informational purposes only *TEIC OT= 10:10:00.65 LAT= 35.822N LON= 80.446W DEP= 5.0 KM MDB= 2.1 NO= 24, GAP= 260 DEG, RMS= 0.52 SEC, SDOT= 0.36 SEC, Q= D, SQD= D/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 3.0 KM, AZ= -64 DEG; ERHMIN= 1.0 KM; ERZ= 3.8 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PKNC 68.9 291 eP 10:10:11.81 (-0.69 ) BENN 113.6 256 eP :20.09 ( 0.27 ) iS 10:10:33.99 ( 0.17 ) PLVA 113.6 326 eP :20.70 ( 0.84 ) eS :34.30 ( 0.41 ) GFM 126.9 285 eP :21.50 (-0.43 ) eS :37.30 (-0.17 ) WMV 150.3 342 eP :27.20 ( 1.73X) eS :46.00 ( 2.41X) BLA 154.2 1 eP :27.60 ( 1.59X) eS :47.40 ( 2.87X) SLTN 165.7 295 eP :27.66 (-0.08 ) eS :49.18 ( 1.67X) BRBC 166.6 267 eP :28.32 ( 0.28 ) eS :48.95 ( 0.92 ) NAV 168.8 350 eP :28.50 ( 0.25 ) eS :48.00 (-0.40 ) TRYN 174.4 250 eP :29.60 ( 0.46 ) eS :50.40 ( 0.46 ) RICH 214.6 274 ePc :35.08 (-0.21 ) eS :11:01.38 ( 0.80 ) BRTN 226.0 286 eP :37.30 ( 0.28 ) eS :05.28 ( 1.71X) RBNC 235.9 258 iPd :38.48 (-0.15 ) eS :07.30 ( 0.94 ) FRV 241.7 50 eP :37.20 (-2.18X) eS :04.20 (-3.46X) SMTN 254.1 285 iP :40.00 (-1.28 ) eS :09.40 (-1.54 ) WSSR 290.3 259 eP :45.22 (-0.57 ) eS :17.81 (-0.93X) TKL 301.6 268 eP :45.30 (-1.73 ) eS :20.30 (-0.59 ) BBG 323.4 252 eP :50.90 ( 1.07X) eS :26.00 ( 0.27X) ***** 3 FEBRUARY 1987; 10:32 - HOLLYTREE, ALABAMA ***** *TEIC OT= 10:32:36.43 LAT= 34.818N LON= 86.316W DEP= 9.6 KM MDB= 2.4 NO= 34, GAP= 70 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= -11 DEG; ERHMIN= 0.3 KM; ERZ= 1.0 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) OCA 25.1 206 eP 10:32:41.00 (-0.07 ) eS 10:32:44.60 ( 0.15 ) MSAL 32.9 276 iPd :42.67 ( 0.36 ) iS :46.09 (-0.51 ) PDTN 66.0 40 ePd :47.66 (-0.10 ) iS :56.22 ( 0.19 ) LKGA 80.2 105 eP :49.95 (-0.16 ) RCG 90.1 79 iPd :51.33 (-0.33 ) iS :33:02.50 (-0.28 ) HVA 97.1 206 eP :52.70 (-0.01 ) eS :04.00 (-0.59X) SHTN 102.8 314 eP+ :53.77 ( 0.17 ) iS :06.13 ( 0.00 ) TVG 105.0 117 eP :54.30 ( 0.37 ) eS :06.90 ( 0.19 ) CPO 110.3 38 eP :54.72 (-0.04 ) eS :08.50 ( 0.36 ) ABTN 119.9 9 eP :56.80 ( 0.58 ) eS :11.45 ( 0.79X) RHT 134.1 77 eP :58.90 ( 0.52 ) eS :15.30 ( 0.90X) TDA 144.0 169 eP :59.90 ( 0.01 ) eS :17.50 ( 0.49 ) GMG 150.6 88 eP :33:01.10 ( 0.13 ) eS :19.00 ( 0.11 ) CDG 152.4 98 eS :20.40 ( 1.15X) PWLA 160.8 277 iP :02.50 ( 0.04 ) iS :21.50 ( 0.03 ) RCT 161.8 68 eP :02.90 ( 0.28 ) eS :22.60 ( 0.86X) TQTN 164.2 61 eP :03.05 ( 0.06 ) eS :23.35 ( 0.97X) BHT 169.0 47 eP :03.93 ( 0.16 ) eS :23.70 (-0.03 ) DCT 175.2 81 eP :04.90 ( 0.21 ) eS :26.60 ( 1.28X) ETT 178.8 71 eP :05.40 ( 0.15 ) eS :26.40 ( 0.11 ) ANTN 179.6 33 eP :05.35 (-0.02 ) eS :27.70 ( 1.21X) TSA 186.6 202 eP :07.00 ( 0.59 ) eS :29.80 ( 1.50X) TLT 193.0 73 eP :08.20 ( 0.78 ) NATN 209.5 304 eP :10.15 ( 0.24X) eS :35.00 ( 0.64X) GBTN 213.4 63 eP :10.87 ( 0.34X) iS :36.30 ( 0.87X) ORT 219.2 56 eP :11.82 ( 0.40X) BBG 229.1 88 iP :13.17 ( 0.14X) iS :39.80 ( 0.05X) BGKY 243.5 356 eP :16.05 ( 0.93X) TKL 249.4 67 iP :16.53 ( 0.63X) iS :45.20 ( 0.48X) MOTN 250.5 323 eP :16.48 ( 0.46X) eS :46.64 ( 1.72X) ONTN 250.6 42 eP :16.60 ( 0.51X) eS :46.80 ( 1.76X) WSSR 254.9 78 eP :17.07 ( 0.36X) eS :47.20 ( 1.08X) SMTN 332.8 58 eP :26.08 (-0.07X) eS :34:03.80 ( 1.36X) ----- *GIT OT= 10:32:36.5 LAT= 34.818N LON= 86.338W DEP= 17.6 KM MDB= 2.3 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -76 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) OCA 24.4 202 P 10:32:41.00 (-0.44 ) S 10:32:44.60 (-0.43 ) MSAL 30.9 276 P :42.67 ( 0.34 ) S :46.69 ( 0.12 ) PDTN 67.2 41 P :47.66 (-0.15 ) S :56.22 ( 0.15 ) RCG 92.0 79 P :51.33 (-0.37 ) S :33:02.53 (-0.29 ) HVA 96.4 204 P :52.70 ( 0.30 ) S :04.00 (-0.03 ) TVG 107.0 117 P :54.30 ( 0.23 ) S :06.90 (-0.02 ) RHT 135.8 78 P :58.90 ( 0.31 ) S :15.30 ( 0.54 ) TDA 144.5 168 P :59.90 (-0.06 ) S :17.50 ( 0.36 ) GMG 152.5 88 P :33:01.10 (-0.12 ) S :19.03 (-0.28 ) CDG 155.0 99 S :20.40 ( 0.43 ) RCT 163.2 69 P :02.90 ( 0.01 ) S :22.60 ( 0.40 ) DCT 176.9 82 P :04.90 (-0.13 ) S :26.00 ( 0.08 ) ***** 3 FEBRUARY 1987; 14:31 - ENGLEWOOD, TENNESSEE ***** *TEIC OT= 14:31:27.98 LAT= 35.497N LON= 84.452W DEP= 11.5 KM MDB= 1.3 NO= 20, GAP= 78 DEG, RMS= 0.24 SEC, SDOT= 0.07 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= -24 DEG; ERHMIN= 0.4 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 18.9 181 iP 14:31:32.10 ( 0.27 ) eS 14:31:34.50 (-0.14 ) TQTN 24.9 275 eP :33.07 ( 0.38 ) iS :35.93 (-0.19 ) GBTN 28.8 49 eP :33.70 ( 0.39 ) eS :37.00 (-0.20 ) ORT 47.7 16 eS :42.34 (-0.09 ) WMTN 54.8 240 ePd :37.52 ( 0.02 ) eS :44.06 (-0.40 ) TKL 64.0 74 eS :46.67 (-0.39 ) GMG 73.1 196 eS :49.72 ( 0.01 ) WSSR 83.0 107 eP :42.25 ( 0.16 ) iS :52.23 (-0.16 ) BBG 90.5 140 iP :43.20 (-0.02 ) eS :54.30 (-0.05X) CRTN 95.6 35 eP :44.10 ( 0.17 ) CPO 102.4 277 eS :57.40 ( 0.01 ) ANTN 102.8 317 eP :45.06 ( 0.01 ) SMTN 150.9 49 eP :54.50 ( 2.07X) eS :32:11.30 ( 1.02 ) ABTN 156.1 287 eP :53.37 ( 0.19 ) eS :12.22 ( 0.64 ) ----- *GIT OT= 14:31:28.7 LAT= 35.489N LON= 84.437W DEP= 7.4 KM MDB= 1.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.2 KM, AZ= -20 DEG; ERHMIN= 0.1 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 18.1 185 P 14:31:32.10 ( 0.10 ) S 14:31:34.50 ( 0.10 ) TLT 25.1 146 P :32.90 (-0.18 ) S :36.00 (-0.28 ) RCT 25.9 232 P :33.00 (-0.22 ) S :36.50 (-0.01 ) GBTN 28.4 46 P :33.70 ( 0.09 ) DCT 48.2 178 P :37.00 ( 0.19 ) S :43.00 ( 0.26 ) RHT 61.1 222 P :38.80 (-0.09 ) TKL 62.9 73 S :46.65 (-0.20 ) GMG 72.7 197 S :49.72 ( 0.12 ) WSSR 81.6 107 S :52.23 ( 0.12 ) BBG 89.0 140 P :43.20 (-0.23 ) ***** 8 FEBRUARY 1987; 01:13 - JOHN SEVIER, TENNESSEE ***** *TEIC OT= 01:13:04.98 LAT= 36.062N LON= 83.774W DEP= 14.1 KM MDB= 0.8 NO= 7, GAP= 202 DEG, RMS= 0.07 SEC, SDOT= 0.10 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= 83 DEG; ERHMIN= 0.3 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CRTN 16.4 338 eP 01:13:08.78 ( 0.06 ) eS 01:13:11.40 (-0.05 ) HPK 17.9 212 eS :11.70 (-0.03 ) LMTN 38.2 121 eS :16.90 (-0.11 ) TKL 44.9 180 eP :13.10 ( 0.12 ) eS :18.85 ( 0.04 ) GBTN 59.1 222 eS :22.50 (-0.11 ) ***** 9 FEBRUARY 1987; 00:47 - DUCKTOWN, TENNESSEE; PROBABLE BLAST ***** *GIT this event is probably a blast *TEIC/TVA this event is probably a blast *TEIC OT= 00:47:37.37 LAT= 35.016N LON= 84.395W DEP= 11.6 KM MDB= 1.7 NO= 11, GAP= 130 DEG, RMS= 0.14 SEC, SDOT= 0.07 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= 58 DEG; ERHMIN= 0.4 KM; ERZ= 1.2 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GMG 30.4 236 iP 00:47:43.00 (-0.01 ) ETT 34.8 351 iP :43.80 ( 0.13 ) eS 00:47:48.20 (-0.08 ) BBG 55.6 106 eP :46.70 (-0.40 ) eS :54.30 ( 0.11 ) TQTN 63.1 332 eP :49.09 ( 0.83X) GBTN 74.1 13 eP :50.00 (-0.01 ) eS :59.10 (-0.13 ) WSSR 79.9 68 iP :51.12 ( 0.12 ) eS :48:00.01 (-0.94X) TKL 90.9 38 iP :52.64 ( 0.05 ) eS :03.10 (-0.59 ) CRTN 140.6 21 eP :48:00.83 ( 0.61 ) ANTN 149.0 330 eP :03.29 ( 1.78X) ABTN 183.1 302 eP :07.92 ( 1.21X) BRTN 203.1 42 eP :11.58 ( 1.79X) ***** 10 FEBRUARY 1987; 09:02 - RINGGOLD, GEORGIA ***** *TEIC OT= 09:02:45.98 LAT= 34.971N LON= 85.003W DEP= 8.4 KM MDB= 1.5 NO= 35, GAP= 91 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= -23 DEG; ERHMIN= 0.3 KM; ERZ= 1.1 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 16.2 43 S-P 2.50 SEC ( 0.18 ) WMTN 30.8 5 eP- 09:02:51.71 ( 0.20 ) iS 09:02:55.47 (-0.07 ) RCG 31.5 271 iPd :51.93 ( 0.30 ) iS :55.83 ( 0.08 ) GMG 32.7 112 iP :52.03 ( 0.17 ) iS :55.97 (-0.18 ) RCT 51.9 37 eS :03:02.60 ( 1.10X) DCT 54.1 80 eP :56.00 ( 0.67 ) eS :02.20 ( 0.05 ) LKGA 57.7 228 eP :55.77 (-0.17 ) eS :02.90 (-0.31 ) ETT 63.6 52 iPc :56.83 (-0.07 ) iS :04.73 (-0.14 ) TQTN 65.5 23 eP :56.60 (-0.59 ) eS :04.91 (-0.47 ) TVG 71.4 203 eP :58.90 ( 0.73 ) TLT 75.1 61 eP :59.10 ( 0.29 ) eS :08.00 (-0.18 ) PDTN 84.1 294 eS :09.92 (-0.81 ) CPO 87.3 324 eP :03:00.59 (-0.24 ) eS :11.27 (-0.39 ) BHT 97.3 3 eP :02.77 ( 0.35 ) iS :14.60 ( 0.18 ) GBTN 105.5 43 eP :03.90 ( 0.27 ) iS :17.10 ( 0.58 ) BBG 109.4 95 eP :04.50 ( 0.17 ) iS :17.57 (-0.15 ) ORT 121.9 31 eS :21.40 ( 0.54X) WSSR 134.3 75 iP :08.43 ( 0.30 ) eS :24.50 ( 0.20 ) ANTN 134.8 351 eP :08.06 (-0.08 ) TKL 135.3 55 eP :08.30 ( 0.11 ) iS :24.60 ( 0.20 ) ABTN 142.8 316 eP :09.72 ( 0.38 ) eS :27.31 ( 0.92 ) SHTN 201.1 286 eS :41.88 ( 0.05 ) ----- *GIT OT= 09:02:46.6 LAT= 34.972N LON= 84.989W DEP= 14.1 KM MDB= 1.6 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -70 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RHT 15.2 40 P 09:02:49.90 (-0.09 ) S 09:02:52.40 (-0.09 ) GMG 31.6 113 P :52.03 (-0.22 ) S :55.97 (-0.44 ) RCG 32.8 271 P :52.40 (-0.04 ) S :57.00 ( 0.27 ) DCT 52.7 80 P :56.00 ( 0.49 ) S :03:02.20 ( 0.15 ) ETT 62.4 51 P :56.83 (-0.20 ) S :04.73 ( 0.04 ) TVG 72.1 204 P :58.90 ( 0.33 ) TLT 73.8 60 P :59.10 ( 0.26 ) S :08.00 ( 0.18 ) ***** 11 FEBRUARY 1987; 08:20 - MECCA, TENNESSEE ***** *TEIC OT= 08:20:00.59 LAT= 35.250N LON= 84.386W DEP= 21.5 KM MDB= 0.6 NO= 14, GAP= 103 DEG, RMS= 0.11 SEC, SDOT= 0.06 SEC, Q= B, SQD= A/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -41 DEG; ERHMIN= 0.2 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 10.6 323 iPc 08:20:04.73 ( 0.10 ) iS 08:20:07.57 (-0.01 ) TQTN 42.8 314 eP :08.71 ( 0.26 ) iS :14.29 ( 0.10 ) GBTN 48.8 19 eP :09.35 ( 0.01 ) iS :15.55 (-0.17 ) GMG 50.2 211 iP :09.60 (-0.01 ) iS :16.08 (-0.11 ) WMTN 53.5 270 eS :16.83 (-0.10 ) BBG 67.0 128 eP :12.22 ( 0.08 ) iS :21.30 ( 0.73X) TKL 71.7 51 iP :12.75 ( 0.00 ) iS :21.62 (-0.01 ) WSSR 73.6 87 iP :13.38 ( 0.24 ) iS :22.22 (-0.07 ) ----- *GIT OT= 08:20:01.2 LAT= 35.245N LON= 84.388W DEP= 18.4 KM MDB= 0.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.5 KM, AZ= -28 DEG; ERHMIN= 0.3 KM; ELLIPSE AREA= 0.4 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 10.9 326 P 08:20:04.73 ( 0.04 ) S 08:20:07.57 ( 0.33 ) TLT 11.4 57 P :04.90 ( 0.17 ) S :07.20 (-0.11 ) DCT 21.3 188 P :06.00 ( 0.21 ) S :08.70 (-0.46 ) RCT 27.3 294 P :07.00 ( 0.44 ) S :10.30 (-0.18 ) RHT 48.8 248 S :15.30 (-0.58 ) GBTN 49.4 19 P :09.35 (-0.42 ) S :15.55 (-0.49 ) GMG 49.6 211 P :09.60 (-0.20 ) S :16.08 (-0.03 ) ***** 14 FEBRUARY 1987; 12:23 - HEIBERGER, ALABAMA ***** *TEIC location for informational purposes only *TEIC OT= 12:23:18.17 LAT= 32.709N LON= 87.269W DEP= 7.3 KM MDB= 2.8 NO= 23, GAP= 225 DEG, RMS= 0.30 SEC, SDOT= 0.23 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.8 KM, AZ= -36 DEG; ERHMIN= 0.4 KM; ERZ= 1.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MLA 39.9 270 iP 12:23:25.20 ( 0.06 ) eS 12:23:30.20 (-0.03 ) TSA 63.6 17 iP :28.90 (-0.16 ) iS :37.10 ( 0.09 ) HVA 153.5 18 eP :44.00 ( 0.77 ) eS :24:01.80 ( 0.29 ) OCA 225.1 20 eP :55.10 ( 0.90 ) MSAL 243.5 13 eP+ :55.79 (-1.23 ) eS :23.64 (-1.74 ) TVG 260.0 44 eP :24:00.00 ( 0.79 ) PWLA 262.5 344 eP :23:59.10 (-0.39 ) eS :29.48 (-0.17 ) LKGA 270.0 38 eP :59.84 (-0.62 ) eS :28.30 (-3.03X) SHTN 305.5 2 eP :24:03.40 (-1.36 ) eS :35.76 (-3.00X) RCG 307.9 35 eP :06.28 ( 1.20 ) eS :39.43 ( 0.11 ) PDTN 313.3 24 eP :05.67 (-0.05 ) eS :44.81 ( 4.39X) PGM 328.0 307 eP :08.47 ( 0.98 ) eS :42.87 (-0.62 ) EBZ 331.5 325 eP :07.55 (-0.37 ) eS :42.75 (-1.48X) GMG 339.1 44 eP :10.65 ( 1.68 ) eS :47.50 ( 1.44X) WMTN 352.6 36 eP :10.28 (-0.25 ) CPO 357.2 25 eP :11.73 ( 0.61 ) MILT 373.5 339 eP :13.75 ( 0.69X) LGAR 380.9 305 eP :13.30 (-0.66X) ETT 389.7 41 eP :16.20 ( 1.11X) eS :57.30 ( 0.67X) TQTN 389.9 36 eP :15.46 ( 0.39X) eS :55.89 (-0.72X) BBG 400.3 52 eP :18.10 ( 1.62X) eS :59.25 ( 0.20X) BHT 408.6 31 eP :17.30 (-0.14X) eS :25:02.10 ( 1.40X) WLA 420.8 312 eP :16.95 (-1.88X) UTM 426.0 339 eP :19.57 ( 0.11X) eS :04.20 ( 0.00X) GBTN 432.5 40 eP :20.00 (-0.29X) eS :06.80 ( 1.16X) MOTN 438.7 352 eP :19.30 (-1.73X) eS :08.15 ( 1.24X) WSSR 444.4 49 eP :24.73 ( 2.85X) eS :10.33 ( 1.94X) TKL 459.1 44 eP :24.00 ( 0.45X) eS :11.90 ( 0.62X) OLY 496.3 310 eP :25.57 (-2.51X) eS :18.10 (-1.00X) CRTN 499.2 38 eP :28.53 ( 0.07X) HOGG 537.4 303 eP :30.90 (-2.19X) TRYN 543.9 57 eS :30.85 ( 1.52X) SMTN 553.8 41 eP :35.15 (-0.03X) eS :32.10 ( 0.71X) BENN 606.5 57 eP :42.50 ( 0.87X) GFM 628.1 52 eP :45.00 ( 0.62X) PKNC 672.9 55 eP :50.75 ( 1.01X) ----- *GIT OT= 12:23:18.6 LAT= 32.729N LON= 87.272W DEP= 10.0FXD KM MDB= 2.7 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.9 KM, AZ= -41 DEG; ERHMIN= 0.5 KM; ELLIPSE AREA= 1.3 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) MLA 39.6 266 P 12:23:25.20 (-0.30 ) S 12:23:30.20 (-0.29 ) TSA 61.5 18 P :28.90 (-0.12 ) S :37.10 ( 0.50 ) TDA 146.8 52 P :44.00 ( 1.13 ) HVA 151.2 18 P :44.00 ( 0.42 ) S :24:01.80 (-0.02 ) OCA 222.6 20 P :55.10 (-0.10 ) TVG 257.3 45 P :24:00.00 (-0.84 ) ATL 283.8 74 P :04.30 (-0.85 ) DCT 366.3 45 P :18.00 (-0.56 ) ETG 370.5 80 P :20.10 ( 0.85 ) RCT 374.8 39 S :25:03.80 (-1.01 ) ***** 21 FEBRUARY 1987; 10:14 - SWEETWATER, TENNESSEE ***** *TEIC OT= 10:14:02.65 LAT= 35.585N LON= 84.430W DEP= 15.7 KM MDB= 0.7 NO= 15, GAP= 123 DEG, RMS= 0.13 SEC, SDOT= 0.06 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= 0.3 KM; ERZ= 1.1 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 21.8 65 iPd 10:14:07.30 ( 0.08 ) iS 10:14:10.50 (-0.05 ) TQTN 27.9 254 eP :08.23 ( 0.17 ) eS :11.82 (-0.20 ) ETT 28.8 185 eP :08.42 ( 0.20 ) iS :12.28 (-0.01 ) ORT 37.8 17 eS :14.58 ( 0.00 ) BHT 55.0 302 iPc :12.28 ( 0.07 ) iS :19.17 (-0.03 ) TKL 60.0 82 eP :12.60 (-0.34 ) eS :20.40 (-0.05 ) WMTN 61.9 233 eS :20.97 ( 0.01X) GMG 83.0 195 eP :15.70 (-0.83X) eS :26.45 (-0.22 ) BBG 96.9 144 eP :18.50 (-0.18 ) eS :30.50 ( 0.12 ) SMTN 143.2 51 eS :42.50 (-0.05 ) ABTN 155.5 283 eS :46.59 ( 0.83X) ***** 21 FEBRUARY 1987; 22:21 - MC FARLAND, TENNESSEE ***** *TEIC OT= 22:21:40.26 LAT= 35.207N LON= 84.399W DEP= 16.4 KM MDB= 0.7 NO= 24, GAP= 90 DEG, RMS= 0.22 SEC, SDOT= 0.07 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -46 DEG; ERHMIN= 0.4 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 14.1 339 iP 22:21:44.03 ( 0.04 ) iS 22:21:46.55 (-0.16 ) TLT 14.8 45 eP :44.20 ( 0.15 ) eS :47.00 ( 0.18 ) DCT 17.1 186 eP :44.50 ( 0.20 ) eS :47.20 (-0.04 ) RCT 28.3 303 eP :46.00 ( 0.23 ) eS :49.70 (-0.09 ) TQTN 45.3 319 eP :48.38 ( 0.06 ) GMG 45.5 213 iP :48.37 (-0.05 ) iS :54.07 (-0.31 ) WMTN 52.5 275 eP :50.23 ( 0.82X) eS :56.15 ( 0.07 ) GBTN 53.7 18 iPc :49.58 (-0.01 ) eS :56.02 (-0.39 ) BBG 65.2 124 iPc :51.58 ( 0.15 ) eS :22:00.32 ( 0.74 ) WSSR 75.1 84 eP :53.20 ( 0.23 ) iS :01.92 (-0.33 ) TKL 75.7 48 eP :52.48 (-0.48 ) eS :02.62 ( 0.39 ) BHT 86.6 325 iPd :54.87 ( 0.20 ) eS :05.80 ( 0.61 ) SMTN 170.6 40 eP :22:08.10 ( 0.57 ) eS :28.00 ( 0.57 ) ----- *GIT OT= 22:21:40.6 LAT= 35.212N LON= 84.409W DEP= 16.4 KM MDB= 0.7 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.2 KM, AZ= -4 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ETT 13.3 342 P 22:21:44.03 ( 0.00 ) S 22:21:46.55 (-0.01 ) TLT 15.1 49 P :44.20 (-0.02 ) S :47.00 ( 0.11 ) DCT 17.5 183 P :44.50 ( 0.00 ) S :47.20 (-0.18 ) RCT 27.3 303 P :46.00 ( 0.23 ) S :49.70 ( 0.12 ) GMG 45.5 212 P :48.37 (-0.09 ) S :54.07 (-0.18 ) GBTN 53.5 20 P :49.58 (-0.11 ) S :56.02 (-0.34 ) BBG 66.3 124 P :51.58 (-0.11 ) S :22:00.32 ( 0.49 ) ***** 22 FEBRUARY 1987; 10:35 - LAKE CITY, TENNESSEE ***** *GIT Although the event converged on the indicated depth, the depth seems unreliable. *GIT OT= 10:35:25.5 LAT= 36.396N LON= 84.206W DEP= 34.9 KM MDB= 2.8 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.7 KM, AZ= -21 DEG; ERHMIN= 0.4 KM; ELLIPSE AREA= 0.8 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ONTN 23.3 294 P 10:35:32.33 ( 0.19 ) CRTN 39.4 124 P :32.92 (-0.91 ) ORT 53.3 190 P :35.02 (-0.55 ) CCVA 53.5 65 P :36.00 ( 0.40 ) S 10:35:43.83 ( 0.82 ) ANTN 103.3 256 P :42.09 (-0.60 ) TLT 121.6 183 P :45.50 ( 0.08 ) S :59.80 (-0.22 ) RCT 123.7 200 P :46.00 ( 0.28 ) DCT 150.1 187 P :50.00 ( 0.32 ) S :36:07.00 (-0.40 ) RHT 158.6 203 P :51.00 ( 0.04 ) S :10.20 ( 0.57 ) TVG 245.6 204 P :36:04.20 ( 0.28 ) S :33.00 ( 0.92 ) ----- *TEIC OT= 10:35:26.49 LAT= 36.340N LON= 84.186W DEP= 19.0 KM MDB= 2.8 NO= 45, GAP= 113 DEG, RMS= 0.26 SEC, SDOT= 0.10 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -40 DEG; ERHMIN= 0.3 KM; ERZ= 2.2 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ONTN 27.9 304 iP 10:35:32.33 ( 0.18 ) CRTN 34.7 116 iPc :32.92 (-0.17 ) ORT 48.9 193 iPd :35.02 (-0.15 ) eS 10:35:41.45 (-0.04 ) HPK 53.6 149 iP :35.00 (-0.86X) S :41.90 (-0.79 ) CCVA 55.0 58 iPd :36.00 (-0.08 ) eS :43.83 ( 0.75 ) GBTN 74.8 182 eP :39.23 ( 0.15 ) iS :48.57 ( 0.30 ) TKL 84.3 154 ePd :40.33 (-0.20 ) iS :50.73 (-0.05 ) LMTN 86.1 125 iPc :40.60 (-0.23 ) BHT 87.5 232 iPd :40.70 (-0.37 ) eS :52.40 ( 0.69 ) SMTN 90.3 87 eP+ :41.53 ( 0.05 ) iS :52.60 ( 0.18 ) ANTN 95.8 259 iPd :42.09 (-0.22 ) TQTN 103.6 208 iP :43.34 (-0.13 ) ETT 115.1 192 iPd :45.20 (-0.06 ) iS :59.30 ( 0.34 ) TLT 115.6 184 eP :45.50 ( 0.17 ) eS :59.80 ( 0.72 ) BRTN 118.4 89 eP :45.67 (-0.09 ) eS :36:00.77 ( 0.94 ) RCT 118.4 201 eP :46.00 ( 0.26 ) WSSR 130.0 155 eP :47.67 ( 0.05 ) eS :03.73 ( 0.69 ) RICH 131.6 110 eP :48.03 ( 0.20 ) eS :04.03 ( 0.63 ) WMTN 140.5 211 eP- :49.40 ( 0.27 ) DCT 144.2 118 eP :50.00 ( 0.29 ) eS :07.00 ( 0.35 ) CPO 149.4 237 eP :50.27 (-0.24 ) RHT 153.5 204 eP :51.00 (-0.11 ) eS :10.20 ( 1.12 ) BBG 166.1 168 eP :53.27 ( 0.13 ) eS :12.53 (-0.06 ) GMG 169.7 195 eP :54.00 ( 0.35 ) eS :14.00 ( 0.52 ) ABTN 180.3 254 eP :55.29 ( 0.07 ) BRBC 183.8 111 iP :56.20 ( 0.31 ) iS :17.93 ( 0.58 ) RCG 184.4 215 iPd :56.17 ( 0.32 ) eS :20.13 ( 2.85X) SLTN 185.7 86 eP :56.00 (-0.02 ) eS :18.81 ( 1.24X) PDTN 191.3 232 eP :56.95 ( 0.05 ) eS :20.60 ( 1.50X) TRYN 212.0 124 ePc :36:00.33 ( 0.22X) eS :25.20 ( 0.55X) GFM 215.4 96 eP :01.00 ( 0.29X) eS :25.73 ( 0.04X) BGKY 221.6 290 eP- :01.60 ( 0.08X) S :28.70 ( 1.60X) LKGA 223.3 212 eP :01.62 (-0.21X) TVG 240.2 205 eP :04.20 ( 0.32X) eS :33.00 ( 1.82X) BENN 243.5 110 iP :05.20 ( 0.84X) eS :34.07 ( 2.07X) PLVA 273.5 81 eP :08.57 ( 0.49X) eS :39.43 ( 0.99X) PKNC 274.3 96 iP :07.57 (-0.55X) eS :37.33 (-1.17X) SHTN 283.1 251 eP :09.65 ( 0.52X) eS :42.10 ( 1.85X) PWLA 382.1 248 eP :23.53 ( 2.31X) eS :37:03.63 ( 2.46X) ***** 23 FEBRUARY 1987; 08:12 - LOUDON, TENNESSEE ***** *TEIC OT= 08:12:43.16 LAT= 35.717N LON= 84.312W DEP= 18.1 KM MDB= 0.7 NO= 19, GAP= 75 DEG, RMS= 0.20 SEC, SDOT= 0.09 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -5 DEG; ERHMIN= 0.3 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 10.8 122 iP 08:12:47.00 ( 0.27 ) iS 08:12:49.40 ( 0.06 ) ORT 21.4 2 eP+ :47.80 (-0.07 ) iS :51.21 (-0.10 ) TQTN 43.6 239 eP :51.12 ( 0.12 ) eS :56.55 (-0.17 ) ETT 45.3 197 eP :50.50 (-0.78 ) eS :56.70 (-0.50 ) TKL 49.2 98 iP :51.70 (-0.14 ) iS :58.10 (-0.07 ) BHT 59.0 284 eP :53.50 ( 0.12 ) eS :13:00.75 (-0.08 ) CRTN 68.4 38 eP :55.02 ( 0.24 ) WMTN 79.4 229 eP+ :56.81 ( 0.36 ) eS :06.43 ( 0.29 ) WSSR 82.6 126 eS :07.10 (-0.03 ) LMTN 83.7 77 eP- :55.59 (-1.54X) eS :07.51 ( 0.19 ) ANTN 97.1 302 eP :59.12 (-0.04 ) eS :08.71 (-2.13X) ABTN 163.5 277 eS :28.84 ( 0.46 ) ***** 24 FEBRUARY 1987; 09:58 - ESTELLE, GEORGIA ***** *TEIC OT= 09:58:10.59 LAT= 34.733N LON= 85.333W DEP= 9.9 KM MDB= 2.4 NO= 35, GAP= 150 DEG, RMS= 0.23 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= -9 DEG; ERHMIN= 0.3 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LKGA 17.6 227 iPd 09:58:14.02 (-0.11 ) iS 09:58:15.70 (-1.01X) RCG 26.9 357 iP :15.85 ( 0.30 ) iS :19.04 (-0.13 ) RHT 56.3 47 eP :21.40 ( 1.08X) eS :28.90 ( 1.49X) GMG 62.3 76 iPc :21.54 ( 0.17 ) eS :28.77 (-0.46 ) WMTN 65.9 30 eP+ :22.07 ( 0.16 ) iS :30.08 (-0.09 ) PDTN 76.3 322 eP+ :23.51 (-0.11 ) iS :33.04 (-0.09 ) DCT 90.8 67 eP :26.10 ( 0.19 ) eS :37.00 (-0.10 ) RCT 91.5 42 eP :26.80 ( 0.80 ) eS :37.50 ( 0.25X) CPO 99.1 347 eP :27.41 ( 0.22 ) eS :38.88 (-0.43 ) OCA 101.9 263 eS :40.20 ( 0.20X) TQTN 103.0 32 eP :28.01 ( 0.25 ) eS :40.13 (-0.17 ) ETT 103.7 50 iPd :27.73 (-0.16 ) iS :40.40 (-0.12 ) TLT 114.7 56 eP :29.20 (-0.37 ) MSAL 123.4 276 eP :30.79 (-0.09 ) eS :45.65 (-0.04 ) BBG 140.1 83 eP :36.00 ( 2.45X) eS :49.80 (-0.50 ) GBTN 145.5 44 eP :34.90 ( 0.63 ) eS :51.90 ( 0.34 ) ABTN 146.1 331 eP- :34.54 ( 0.17 ) eS :52.55 ( 0.82 ) TDA 146.7 206 eP :34.60 ( 0.15X) eS :51.90 ( 0.04X) ANTN 159.9 3 eP :37.39 ( 0.88 ) eS :55.98 ( 0.55 ) ORT 160.6 35 eP :37.43 ( 0.84 ) iS :57.02 ( 1.46X) WSSR 171.2 69 iPc :38.67 ( 0.36 ) eS :58.73 ( 0.19 ) TKL 175.2 54 eP :39.26 ( 0.44 ) eS :59.89 ( 0.46 ) SHTN 182.6 297 eP- :39.93 (-0.03 ) eS :59:01.24 (-0.16 ) ONTN 210.1 22 eP :44.51 ( 0.31X) eS :10.03 ( 1.30X) CRTN 211.7 39 eP :45.08 ( 0.64X) eS :11.57 ( 2.43X) LMTN 216.7 53 eP :45.17 (-0.04X) eS :10.74 ( 0.26X) PWLA 251.3 277 eP :51.10 ( 0.85X) eS :20.00 ( 0.81X) BGKY 274.2 337 eS :26.33 ( 2.29X) TRYN 288.0 77 eS :29.30 ( 2.19X) ----- *GIT OT= 09:58:11.2 LAT= 34.755N LON= 85.333W DEP= 14.0 KM MDB= 1.9 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -57 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCG 24.4 357 P 09:58:15.85 ( 0.06 ) S 09:58:19.04 (-0.14 ) GMG 61.7 79 P :21.54 ( 0.03 ) S :28.77 (-0.32 ) DCT 89.7 68 P :26.10 ( 0.15 ) S :37.00 ( 0.22 ) ETT 101.8 52 P :27.60 (-0.29 ) S :40.20 ( 0.06 ) OCA 102.3 261 S :40.20 (-0.07 ) TLT 113.0 58 P :29.20 (-0.46 ) GBTN 143.3 45 S :51.90 ( 0.37 ) TKL 173.0 55 P :39.30 ( 0.15 ) S :59:00.00 ( 0.34 ) ***** 3 MARCH 1987; 09:46 - NORTHERN ALABAMA ***** *GIT this event is probably a blast *TEIC possible earthquake; location for informational purposes only *TEIC OT= 09:46:48.66 LAT= 33.913N LON= 87.757W DEP= 5.0 KM MDB= 2.3 NO= 21, GAP= 252 DEG, RMS= 0.36 SEC, SDOT= 0.28 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.6 KM, AZ= 7 DEG; ERHMIN= 0.6 KM; ERZ= 2.6 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) PWLA 121.7 347 iPc 09:47:09.00 (-0.01 ) eS 09:47:23.70 (-0.16 ) MSAL 143.7 44 eP :12.02 (-0.37 ) iS :29.90 ( 0.19 ) SHTN 180.9 18 eP :17.96 (-0.13 ) eS :40.72 ( 1.14X) EBZ 199.9 313 eP :20.50 (-0.49 ) eS :45.40 ( 0.81 ) LKGA 224.7 69 eP :23.44 (-1.38X) eS :51.59 ( 0.37 ) PGM 225.6 286 iS :52.10 ( 0.72 ) PDTN 231.1 49 eP :25.05 (-0.72 ) eS :53.79 ( 0.93 ) MILT 232.6 338 iP :25.60 (-0.38 ) eS :53.20 (-0.02 ) RCG 250.8 61 eP :27.70 (-1.10 ) eS :58.77 ( 0.67 ) ABTN 265.7 34 eP :30.63 (-0.02 ) eS :48:03.56 ( 2.26X) CPO 274.1 46 eP :30.77 (-0.94 ) eS :05.63 ( 2.49X) LGAR 279.2 288 eS :05.70 ( 1.58X) WMTN 295.2 59 eP :34.64 ( 0.37X) eS :08.12 ( 0.56 ) MOTN 300.8 356 eP :33.67 (-1.26 ) BHT 334.8 49 eS :16.50 ( 0.47 ) ANTN 340.4 42 eS :18.12 ( 0.95 ) ETT 341.0 62 eS :15.75 (-1.53X) BBG 378.2 73 eS :25.50 ( 0.18X) GBTN 378.3 58 eS :23.68 (-1.45X) WSSR 412.1 67 eS :30.72 (-1.79X) TKL 412.7 61 eS :30.80 (-1.60X) ***** 6 MARCH 1987; 10:30 - BEARDEN, TENNESSEE ***** *TEIC OT= 10:30:40.38 LAT= 35.998N LON= 84.097W DEP= 5.1 KM MDB= 1.6 NO= 33, GAP= 163 DEG, RMS= 0.22 SEC, SDOT= 0.06 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -16 DEG; ERHMIN= 0.2 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ORT 21.1 242 iPc 10:30:44.29 ( 0.04 ) iS 10:30:47.15 ( 0.07 ) HPK 21.2 112 iPd :44.15 (-0.12 ) iS :47.04 (-0.07 ) CRTN 32.2 46 eP- :45.72 (-0.42 ) eS :50.57 ( 0.22 ) GBTN 38.2 196 eP :47.20 ( 0.08 ) eS :52.10 ( 0.06 ) TKL 47.7 142 eP :49.10 ( 0.41 ) eS :54.74 (-0.02 ) TKL 47.7 142 eP :48.69 ( 0.00 ) eS :54.82 ( 0.06 ) ONTN 62.0 330 eS :58.92 ( 0.02 ) LMTN 63.2 101 eS :59.77 ( 0.53 ) TQTN 78.0 227 eS :31:03.15 (-0.28 ) BHT 78.3 258 eP :52.75 (-1.04X) eS :03.11 (-0.47 ) TLT 79.1 192 eS :03.05 (-0.72X) ETT 81.3 204 eP :54.50 ( 0.24 ) eS :03.95 (-0.44 ) RCT 88.6 215 eS :06.00 (-0.45X) WSSR 92.7 149 eP :56.02 (-0.18 ) eS :07.25 (-0.50 ) SMTN 92.7 62 eP :56.40 ( 0.24 ) eS :07.20 (-0.49 ) ANTN 103.9 281 eS :11.13 ( 0.25 ) DCT 108.7 196 eP :59.05 ( 0.30 ) eS :11.75 (-0.42 ) WMTN 114.9 224 eP :59.97 ( 0.27 ) eS :13.85 ( 0.04 ) RBNC 123.2 125 eP :31:00.75 (-0.34 ) RHT 124.4 215 eS :15.95 (-0.35X) BBG 127.3 168 eP :02.00 ( 0.31 ) eS :17.10 (-0.15 ) GMG 136.2 203 eS :19.95 ( 0.38 ) ABTN 181.9 267 eS :31.49 (-0.07 ) SLTN 184.5 74 eS :34.22 ( 2.02X) TRYN 186.3 115 eS :33.10 ( 0.31 ) GFM 206.7 86 eS :39.00 ( 0.66X) TVG 210.6 212 eS :41.00 ( 1.85X) ----- *GIT OT= 10:30:41.2 LAT= 35.971N LON= 84.081W DEP= 10.0FXD KM MDB= 1.6 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -17 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.3 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 35.8 199 P 10:30:47.20 (-0.28 ) S 10:30:52.10 ( 0.06 ) TKL 44.4 141 P :49.10 ( 0.23 ) S :54.74 ( 0.31 ) TLT 76.5 194 S :31:03.05 (-0.38 ) ETT 79.2 205 P :54.50 ( 0.00 ) S :03.95 (-0.23 ) RCT 87.2 217 S :06.00 (-0.42 ) WSSR 89.5 149 P :56.02 (-0.14 ) S :07.25 ( 0.20 ) SMTN 92.6 61 P :56.40 (-0.28 ) S :07.20 (-0.75 ) DCT 106.3 197 P :59.05 ( 0.16 ) S :11.75 (-0.04 ) RHT 123.1 216 S :15.95 (-0.57 ) TVG 209.5 212 S :41.00 ( 0.17 ) ***** 9 MARCH 1987; 17:17 - ALEXANDRIA, TENNESSEE ***** *TEIC OT= 17:17:52.98 LAT= 36.023N LON= 86.039W DEP= 3.2 KM MDB= 0.0 NO= 13, GAP= 192 DEG, RMS= 0.17 SEC, SDOT= 0.15 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= -34 DEG; ERHMIN= 0.5 KM; ERZ= 1.1 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) ABTN 16.6 203 iPd 17:17:56.03 ( 0.04 ) iS 17:17:58.13 (-0.05 ) CPO 62.7 138 eP :18:03.67 (-0.25 ) eS :18:10.91 (-0.99X) ANTN 74.5 77 eP :04.69 (-1.19X) iS :15.19 (-0.10 ) PDTN 85.0 168 eP :07.37 (-0.21 ) eS :18.41 ( 0.17 ) BHT 100.6 101 eP :10.50 ( 0.30 ) SHTN 116.8 238 eP :13.14 ( 0.37 ) eS :26.89 (-0.32 ) WMTN 129.3 131 eP :14.62 (-0.05 ) eS :32.03 ( 1.52X) TQTN 131.4 115 eP :15.19 ( 0.21 ) eS :32.91 ( 1.86X) MSAL 142.7 204 eP- :17.45 ( 0.73 ) eS :32.52 (-1.53X) ONTN 152.1 70 eP :18.99 ( 0.79 ) ETT 162.9 118 eP :21.00 ( 1.16X) GBTN 169.8 103 eP :19.20 (-1.68X) eS :42.20 ( 0.96X) MOTN 187.0 291 eP+ :24.70 ( 1.21X) eS :47.90 ( 2.14X) CRTN 198.9 84 eP :27.00 ( 1.66X) eS :51.04 ( 2.08X) ***** 10 MARCH 1987; 07:05 - GREAT FALLS, SOUTH CAROLINA ***** *TEIC location for informational purposes only *TEIC OT= 07:05:26.66 LAT= 34.551N LON= 80.947W DEP= 8.8 KM MDB= 1.8 NO= 23, GAP= 127 DEG, RMS= 0.20 SEC, SDOT= 0.08 SEC, Q= C, SQD= C/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.5 KM, AZ= -36 DEG; ERHMIN= 0.4 KM; ERZ= 3.2 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 15.0 122 ePd 07:05:29.78 ( 0.12 ) iS 07:05:31.70 (-0.15 ) MR07 40.1 240 iP :33.60 (-0.10 ) iS :38.10 (-0.73 ) MR01 40.3 233 iP :34.00 ( 0.28 ) iS :39.00 ( 0.13 ) JSC 41.6 224 ePd :34.10 ( 0.16 ) iS :39.20 (-0.06 ) MR02 47.5 213 iP :34.99 ( 0.08 ) iS :40.70 (-0.22 ) BENN 130.0 330 eP :47.75 (-0.34 ) eS :06:03.44 (-0.30 ) TRYN 142.9 304 eP :50.15 ( 0.09 ) eS :06.75 (-0.40 ) PKNC 167.0 353 eP :54.05 ( 0.30 ) eS :13.20 (-0.32 ) GFM 190.0 336 eP :57.75 ( 0.40 ) eS :20.01 ( 0.26 ) LPM 196.1 285 eP :59.10 ( 0.97X) SLTN 235.4 333 eP+ :06:04.64 ( 0.47 ) eS :31.80 ( 0.25 ) PLVA 235.5 355 eP :04.10 (-0.19 ) eS :31.60 (-0.16 ) WSSR 253.6 289 eP :08.45 ( 1.57X) eS :37.00 ( 0.76 ) BBG 264.8 279 eP :09.90 ( 1.65X) eS :39.75 ( 1.15X) LMTN 268.8 304 eP :10.10 ( 1.46X) eS :41.52 ( 2.24X) TKL 285.6 296 eP :12.35 ( 1.70X) eS :43.55 ( 0.79X) GBTN 322.3 294 eS :50.95 ( 0.43X) ETT 331.9 286 eP :17.90 ( 1.56X) eS :53.50 ( 0.90X) ----- *USC OT= 07:05:27.4 LAT= 34.542N LON= 80.952W DEP= 0.9 KM MDL= 2.1 NO= 13, GAP= 237 DEG, RMS RES= 0.06 SEC, Q= D, SQD= C/D ERROR ESTIMATES (HYPO71) (ERH= 0.7 KM; ERZ= 28.4 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 14.9 118 iP 07:05:29.78 (-0.07 ) S 07:05:31.76 ( 0.01 ) MR07 39.2 241 eP :33.81 ( 0.04 ) S :38.63 (-0.10 ) MR01 39.3 234 eP :33.84 ( 0.06 ) S :38.81 ( 0.06 ) JSC 40.6 224 iP :34.08 ( 0.09 ) S :39.12 (-0.01 ) MR10 42.2 237 eP :34.21 (-0.04 ) S :39.50 (-0.08 ) MR02 46.5 213 eP :35.05 ( 0.07 ) S :40.98 ( 0.09 ) MR05 46.6 229 eP :35.05 ( 0.10X) S :40.76 (-0.07 ) ***** 13 MARCH 1987; 19:55 - MEADOW, TENNESSEE ***** *TEIC OT= 19:55:22.25 LAT= 35.665N LON= 84.219W DEP= 6.7 KM MDB= 1.9 NO= 33, GAP= 53 DEG, RMS= 0.28 SEC, SDOT= 0.06 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -28 DEG; ERHMIN= 0.3 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 0.7 79 iPc 19:55:23.50 ( 0.01 ) iS 19:55:24.30 (-0.10 ) ORT 28.2 344 iPc :27.59 ( 0.28 ) eS :31.38 ( 0.37 ) TKL 40.3 91 eP :29.75 ( 0.45 ) iS :34.50 ( 0.06 ) HPK 42.2 47 eP :29.74 ( 0.13 ) eS :34.46 (-0.53X) ETT 43.3 210 iP :30.00 ( 0.19 ) iS :34.75 (-0.58 ) TQTN 48.8 250 eP :30.95 ( 0.24 ) eS :37.39 ( 0.51 ) RCT 53.6 229 eP :31.50 ( 0.01 ) eS :38.10 (-0.13 ) CRTN 68.5 30 eP :34.08 ( 0.12 ) eS :42.31 (-0.20 ) BHT 68.7 287 eS :42.49 (-0.14 ) WSSR 72.3 126 iP+ :34.95 ( 0.30 ) eS :43.05 (-0.66X) LMTN 77.2 71 iPc :35.21 (-0.20 ) eS :44.65 (-0.36 ) WMTN 82.6 236 eP- :36.53 ( 0.23 ) iS :46.24 (-0.31 ) RHT 88.7 223 eP :38.50 ( 1.20X) eS :47.50 (-0.78X) ONTN 92.8 347 eP+ :37.59 (-0.41 ) eS :49.08 (-0.41 ) BBG 95.3 157 iP :38.10 (-0.34 ) eS :50.25 (-0.02 ) GMG 98.0 205 eS :50.95 (-0.08 ) ANTN 107.3 302 eP- :40.09 (-0.21 ) eS :53.10 (-0.39 ) RBNC 116.9 107 eS :55.90 (-0.32X) CPO 122.9 267 eP :42.70 ( 0.01 ) eS :57.32 (-0.29 ) BRTN 144.0 57 eP+ :47.37 ( 1.45X) eS :56:07.37 ( 4.17X) LKGA 162.5 225 eP :49.52 ( 0.76 ) eS :08.59 ( 0.48 ) ABTN 172.7 279 eS :11.11 ( 0.35 ) TVG 173.7 215 eP :52.00 ( 1.55X) eS :10.00 (-1.04X) SLTN 207.8 65 eP :56.25 ( 0.59X) ----- *GIT OT= 19:55:22.4 LAT= 35.677N LON= 84.225W DEP= 6.4 KM MDB= 2.0 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -25 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 1.8 134 P 19:55:23.50 (-0.02 ) S 19:55:24.30 (-0.04 ) TKL 40.8 93 P :29.75 ( 0.47 ) S :34.50 ( 0.18 ) ETT 44.2 208 P :30.00 ( 0.17 ) S :34.75 (-0.52 ) RCT 54.1 227 P :31.50 ( 0.06 ) S :38.50 ( 0.43 ) DCT 71.4 194 P :34.10 (-0.14 ) S :43.00 ( 0.08 ) WSSR 73.7 127 P :34.95 ( 0.33 ) S :43.05 (-0.52 ) BBG 96.8 157 P :38.10 (-0.27 ) S :50.25 ( 0.17 ) TVG 175.0 215 S :56:12.00 ( 0.16 ) ***** 14 MARCH 1987; 20:41 - LOUISVILLE, TENNESSEE ***** *TEIC OT= 20:41:58.14 LAT= 35.777N LON= 84.103W DEP= 17.0 KM MDB= 1.7 NO= 32, GAP= 63 DEG, RMS= 0.18 SEC, SDOT= 0.05 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -33 DEG; ERHMIN= 0.2 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 15.7 218 iPd 20:42:02.20 ( 0.14 ) iS 20:42:04.95 (-0.02 ) ORT 23.4 309 iPc :03.17 ( 0.15 ) iS :06.53 (-0.05 ) HPK 26.2 51 eP :03.39 (-0.01 ) iS :07.00 (-0.23 ) TKL 32.6 114 eP :04.48 ( 0.17 ) iS :09.03 ( 0.17 ) CBT 39.0 228 eP :05.40 ( 0.15 ) eS :11.00 ( 0.56X) CRTN 52.6 27 eP :07.21 (-0.12 ) eS :14.09 ( 0.05 ) TLT 55.2 197 eS :14.00 (-0.74X) ETT 59.3 213 iP :08.17 (-0.19 ) iS :15.50 (-0.32 ) TQTN 63.4 243 eP :09.28 ( 0.33 ) eS :16.70 (-0.14 ) LMTN 63.8 79 iS :16.81 (-0.21 ) RCT 69.6 227 eS :18.40 (-0.10 ) WSSR 73.0 139 eP :10.87 ( 0.34 ) eS :19.58 ( 0.01 ) BHT 76.5 276 iP :11.08 ( 0.08 ) iS :20.52 ( 0.13 ) ONTN 84.0 339 eP :11.88 (-0.25 ) eS :22.28 (-0.07 ) DCT 85.1 200 eP :12.40 ( 0.10 ) eS :22.80 ( 0.17 ) WMTN 98.3 234 eP :14.42 ( 0.12 ) eS :26.17 ( 0.07 ) BBG 103.6 165 eP :15.28 ( 0.08 ) iS :27.25 (-0.40 ) SMTN 106.8 51 eS :29.30 ( 0.91X) GMG 113.8 207 eP :17.22 ( 0.49 ) eS :30.37 ( 0.08 ) ABTN 181.6 274 eP :29.50 ( 2.43X) eS :48.80 ( 0.62 ) ----- *GIT OT= 20:41:58.2 LAT= 35.777N LON= 84.107W DEP= 19.6 KM MDB= 1.4 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -40 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 15.5 217 P 20:42:02.20 (-0.08 ) S 20:42:04.95 (-0.31 ) TKL 32.9 114 P :04.48 ( 0.05 ) S :09.03 ( 0.04 ) CBT 38.8 227 P :05.40 ( 0.13 ) S :11.00 ( 0.56 ) TLT 55.2 197 S :14.00 (-0.66 ) ETT 59.2 212 P :08.17 (-0.15 ) S :15.50 (-0.23 ) RCT 69.5 227 S :18.40 (-0.08 ) WSSR 73.4 139 P :10.87 ( 0.37 ) S :19.58 ( 0.08 ) BHT 76.1 276 P :11.08 ( 0.15 ) S :20.52 ( 0.28 ) DCT 85.1 200 P :12.40 ( 0.07 ) S :22.80 ( 0.13 ) ***** 16 MARCH 1987; 05:00 - HENSON GAP, TENNESSEE ***** *TEIC OT= 05:00:23.89 LAT= 35.271N LON= 85.260W DEP= 21.5 KM MDB= 0.8 NO= 21, GAP= 98 DEG, RMS= 0.14 SEC, SDOT= 0.07 SEC, Q= B, SQD= A/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= 1 DEG; ERHMIN= 0.2 KM; ERZ= 0.9 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) WMTN 26.2 95 eP- 05:00:29.56 ( 0.06 ) iS 05:00:33.64 ( 0.04 ) RCG 33.8 194 eP :30.62 ( 0.12 ) eS :35.21 (-0.12 ) CPO 46.7 322 eP- :32.34 (-0.01 ) eS :38.41 (-0.11 ) PDTN 53.7 270 eP :33.35 (-0.01 ) eS :40.14 (-0.13 ) RCT 55.0 81 eS :40.70 ( 0.09 ) TQTN 55.6 61 eP :33.71 ( 0.07 ) eS :40.96 ( 0.21 ) GMG 70.3 130 eS :44.45 (-0.24 ) ETT 73.4 85 eP :36.20 (-0.14 ) eS :45.15 (-0.28 ) LKGA 74.4 195 eP :36.60 ( 0.10 ) eS :45.91 ( 0.21 ) TVG 99.2 182 eS :53.60 ( 1.44X) ABTN 102.9 312 eP :41.01 ( 0.22 ) eS :53.13 ( 0.01 ) GBTN 104.8 65 eS :53.78 ( 0.15 ) ORT 111.8 50 eS :57.47 ( 1.98X) BBG 139.2 108 eS :01:02.45 (-0.46 ) TKL 141.5 72 eP :46.80 ( 0.10X) eS :03.50 ( 0.15 ) ----- *GIT OT= 05:00:24.1 LAT= 35.278N LON= 85.245W DEP= 21.5 KM MDB= 0.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.5 KM, AZ= 87 DEG; ERHMIN= 0.3 KM; ELLIPSE AREA= 0.4 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) RCG 34.9 196 P 05:00:30.62 (-0.12 ) S 05:00:35.21 (-0.39 ) RHT 39.8 124 S :36.85 ( 0.06 ) RCT 53.6 82 S :40.70 ( 0.44 ) GMG 69.9 131 S :44.45 (-0.10 ) ETT 72.0 86 P :36.20 (-0.03 ) S :45.15 ( 0.04 ) DCT 79.3 108 S :46.90 (-0.16 ) TVG 100.1 183 S :53.60 ( 0.96 ) GBTN 103.0 65 S :53.78 ( 0.35 ) BBG 138.6 109 S :01:02.45 (-0.57 ) TKL 139.7 72 P :46.80 ( 0.06 ) S :03.50 ( 0.18 ) ***** 16 MARCH 1987; 13:09 - GREAT FALLS, SOUTH CAROLINA ***** *TEIC Felt in Great Falls, South Carolina, area. *TEIC location for informational purposes only *TEIC OT= 13:09:26.30 LAT= 34.546N LON= 80.951W DEP= 12.8 KM MDB= 3.2 NO= 24, GAP= 124 DEG, RMS= 0.19 SEC, SDOT= 0.09 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.3 KM, AZ= -40 DEG; ERHMIN= 0.3 KM; ERZ= 2.0 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 15.1 119 P 13:09:29.34 (-0.33 ) S 13:09:32.31 ( 0.18 ) MR07 39.5 241 P :33.30 (-0.05 ) MR01 39.6 233 P :33.50 ( 0.14 ) JSC 40.9 224 P :32.67 (-0.91 ) S :38.79 (-0.11 ) MR10 42.4 237 P :33.85 ( 0.03 ) MR02 46.8 213 P :34.70 ( 0.17 ) BENN 130.3 330 eP :47.59 ( 0.07 ) eS :10:02.95 (-0.06 ) CHF 161.3 249 eP :53.50 ( 1.30X) eS :11.90 ( 0.79X) CH6 162.3 243 eP :53.40 ( 1.04X) eS :11.20 (-0.18 ) PKNC 167.5 354 eP :53.72 ( 0.51 ) eS :12.63 (-0.23 ) GFM 190.3 336 iPc :56.90 ( 0.12 ) eS :19.10 ( 0.06 ) SLTN 235.7 334 eP :10:02.78 (-0.82 ) eS :30.48 (-0.35 ) PLVA 236.0 355 eP :03.15 (-0.61 ) eS :31.10 ( 0.00 ) WSSR 253.4 289 eP :06.05 ( 0.01 ) eS :35.22 ( 0.16X) ETG 261.9 239 eS :37.80 ( 1.22X) BRTN 265.8 320 eP :07.50 ( 0.04 ) iS :37.93 ( 0.43 ) LMTN 268.8 304 eP :07.43 (-0.39 ) eS :37.62 (-0.51 ) TKL 285.4 296 eP :09.81 (-0.01X) iS :41.75 ( 0.16X) SMTN 287.2 316 eP :10.00 (-0.10X) eS :41.75 (-0.32X) CRTN 320.3 306 eP :14.42 ( 0.31X) ETT 331.6 286 eP :15.50 ( 0.00X) eS :51.00 (-0.41X) CCVA 335.6 314 eP :16.25 ( 0.27X) eS :52.29 ( 0.04X) ORT 340.7 297 eS :55.24 ( 1.95X) GMG 342.5 277 eP :16.90 ( 0.00X) BHT 391.3 293 eP :23.05 ( 0.22X) RCG 405.3 278 eP :24.41 (-0.09X) eS :11:07.32 ( 0.34X) ANTN 428.8 296 eS :13.59 ( 1.62X) ----- *USC OT= 13:09:26.8 LAT= 34.560N LON= 80.948W DEP= 3.0 KM MDL= 3.1 NO= 18, GAP= 132 DEG, RMS RES= 0.07 SEC, Q= C, SQD= B/C ERROR ESTIMATES (HYPO71) (ERH= 0.4 KM; ERZ= 3.0 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) LHS 15.7 125 iP 13:09:29.34 (-0.01 ) S 13:09:31.33 (-0.04 ) MR07 40.5 239 eP :33.35 ( 0.01 ) S :38.22 (-0.25X) MR01 40.8 232 iP :33.42 ( 0.04 ) S :38.59 ( 0.04 ) JSC 42.3 223 iP :33.67 ( 0.05 ) S :38.97 (-0.01 ) MR10 43.6 235 iP :33.84 ( 0.01 ) S :38.81 (-0.54X) MR08 45.6 248 iP :34.00 (-0.15 ) S :40.00 ( 0.08 ) MR02 48.3 212 eP :34.65 ( 0.01 ) S :40.66 (-0.13 ) BENN 129.0 330 eP :47.64 ( 0.04 ) S :10:02.95 (-0.91X) PRM 140.5 248 eP :49.50 ( 0.05 ) S :07.00 (-0.15 ) SGS 156.9 165 eP :52.42 ( 0.32 ) S :11.27 (-0.60X) PKNC 165.9 353 eP :53.72 ( 0.17 ) S :12.63 (-1.82X) VRN 168.9 180 eP :54.19 ( 0.16 ) S :14.63 (-0.67X) GFM 188.9 336 iP :56.90 ( 0.36 ) S :19.10 (-0.68X) ***** 17 MARCH 1987; 04:42 - GREAT FALLS, SOUTH CAROLINA ***** *USC OT= 04:42:06.6 LAT= 34.560N LON= 80.962W DEP= 2.5 KM MDL= 1.2 NO= 10, GAP= 142 DEG, RMS RES= 0.05 SEC, Q= B, SQD= A/C ERROR ESTIMATES (HYPO71) (ERH= 0.2 KM; ERZ= 1.4 KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GMA 9.8 341 iP 04:42:08.23 (-0.01 ) S 04:42:09.48 (-0.04 ) LAN 11.8 37 iP :08.25 (-0.30X) S :09.56 (-0.52X) GFC 12.9 215 iP :08.77 ( 0.04 ) S :10.43 ( 0.03 ) LHS 16.7 122 iP :09.41 ( 0.06 ) S :11.45 (-0.04 ) MR01 39.8 230 P :13.40 ( 0.35X) S :18.10 ( 0.02 ) JSC 41.4 221 iP :13.30 (-0.01 ) S :18.60 ( 0.04 ) MR02 47.6 211 P :15.00 ( 0.64X) S :20.30 (-0.12 ) ***** 24 MARCH 1987; 20:13 - MADISONVILLE, TENNESSEE ***** *TEIC OT= 20:13:42.70 LAT= 35.528N LON= 84.278W DEP= 15.4 KM MDB= 1.4 NO= 24, GAP= 135 DEG, RMS= 0.16 SEC, SDOT= 0.05 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -50 DEG; ERHMIN= 0.2 KM; ERZ= 0.8 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 16.5 22 eP 20:13:46.75 ( 0.20 ) eS 20:13:49.20 (-0.17 ) TLT 25.2 181 eP :47.90 ( 0.17 ) eS :51.70 ( 0.30 ) ETT 27.6 216 iP :48.05 (-0.04 ) iS :52.00 (-0.02 ) RCT 40.3 240 eP :50.30 ( 0.34 ) eS :55.30 ( 0.03 ) TQTN 40.7 268 eP :50.00 (-0.02 ) iS :55.42 ( 0.05 ) ORT 42.4 357 iS :55.76 (-0.08 ) TKL 47.9 72 iS :57.40 ( 0.11 ) TKL 47.9 72 eS :57.24 (-0.05 ) DCT 54.1 194 eP :52.00 (-0.10 ) eS :58.70 (-0.26 ) BHT 70.0 301 eS :14:03.28 ( 0.06 ) WMTN 70.4 244 eP :54.50 (-0.08 ) iS :03.29 ( 0.04 ) RHT 74.2 228 eS :03.90 (-0.36 ) GMG 82.0 206 iS :06.27 (-0.17 ) CRTN 84.4 28 eS :06.50 (-0.47 ) SMTN 136.9 46 eP :14:05.10 ( 0.30 ) eS :21.30 ( 0.36 ) ABTN 170.4 284 eS :30.43 ( 0.69 ) ----- *GIT OT= 20:13:43.1 LAT= 35.526N LON= 84.282W DEP= 14.6 KM MDB= 1.0 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.5 KM, AZ= -29 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.3 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 16.8 23 P 20:13:46.75 (-0.01 ) S 20:13:49.20 (-0.24 ) TLT 24.9 180 P :47.90 ( 0.07 ) S :51.70 ( 0.39 ) ETT 27.2 215 P :48.05 (-0.10 ) S :52.00 ( 0.14 ) RCT 39.9 240 P :50.30 ( 0.26 ) S :55.30 ( 0.16 ) DCT 53.8 193 P :52.00 (-0.20 ) S :58.70 (-0.18 ) RHT 73.9 228 S :14:03.90 (-0.48 ) ***** 27 MARCH 1987; 07:29 - VONORE, TENNESSEE ***** *NEIS Slight damage (VI) at Friendsville, Greenback, Louisville and Tallassee, TN. Felt (V) at Benton, Delano, Harriman, Jacksboro, Philadelphia, Sweetwater, Tellico Plains, Turtletown and Vonore, TN, and at Epworth and Mineral Bluff, GA. Felt in much of eastern Tennessee and in parts of Georgia and North Carolina. *TEIC Felt in east Tennessee, northern Georgia, western North Carolina, and southern Kentucky *TEIC OT= 07:29:30.46 LAT= 35.565N LON= 84.230W DEP= 18.5 KM MDB= 4.2 NO= 28, GAP= 42 DEG, RMS= 0.14 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= -66 DEG; ERHMIN= 0.3 KM; ERZ= 1.0 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 11.3 9 iPc 07:29:34.05 (-0.08 ) TLT 29.7 189 iPc :36.10 (-0.23 ) ETT 33.5 218 iPd :36.90 ( 0.03 ) ORT 38.8 350 iPc :37.82 ( 0.20 ) iS 07:29:42.90 ( 0.06 ) TKL 42.6 76 iP :38.27 ( 0.10 ) TQTN 45.3 263 iPd :38.63 ( 0.06 ) RCT 46.2 238 iP :38.85 ( 0.16 ) HPK 51.1 38 iP :39.05 (-0.38X) DCT 59.3 197 iP :40.82 ( 0.12 ) WSSR 67.2 118 iPc :42.23 ( 0.24 ) BHT 71.9 296 eP :42.68 ( 0.03 ) WMTN 76.2 243 iPd :43.14 (-0.12 ) CRTN 78.7 26 iPd :43.53 (-0.12 ) RHT 80.2 228 iPd :43.90 ( 0.03 ) LMTN 82.3 64 iPd :43.95 (-0.27 ) BBG 85.6 153 iPc :44.90 ( 0.11 ) GMG 87.7 207 iPd :44.90 (-0.18 ) ONTN 103.5 349 iPc :47.22 (-0.23 ) ANTN 112.7 307 iPc :48.79 (-0.08 ) RCG 121.0 238 iPd :50.00 (-0.12 ) CPO 121.9 272 iPd :50.29 ( 0.03 ) CCVA 125.8 24 ePd :50.70 (-0.16 ) SMTN 130.9 46 ePd :51.50 (-0.17 ) PDTN 150.6 258 iPd :54.69 ( 0.05 ) BRTN 151.0 54 ePd :54.43 (-0.30 ) LKGA 154.1 228 iPd :54.95 (-0.25 ) TVG 164.2 217 iPd :56.90 ( 0.18 ) ABTN 173.7 282 iPc :58.35 ( 0.18 ) TRYN 183.2 100 ePc :30:00.30 ( 0.63X) SLTN 213.7 62 ePd :03.64 (-0.63X) GFM 227.1 74 ePd :05.60 (-0.88X) BENN 232.9 89 ePd :06.38 (-0.69X) MSAL 236.4 251 ePd :06.62 (-0.80X) BGKY 260.8 308 eP :10.10 (-0.30X) SHTN 263.3 268 eP- :10.14 (-0.58X) L6KY 267.2 349 eP+ :10.90 (-0.26X) S :44.90 ( 4.03X) SOKY 267.4 325 ePd :10.90 (-0.28X) eS :44.50 ( 3.60X) BHKY 275.2 355 eP :12.55 ( 0.42X) eS :46.80 ( 4.25X) PKNC 282.7 78 ePd :12.28 (-0.88X) PLVA 302.1 65 ePd :14.50 (-1.10X) PKKY 330.4 18 iPd :17.45 (-1.43X) SMKY 342.0 308 eP :20.00 (-0.31X) PUV 346.7 61 eP :31:19.77 (-1.19X) PWLA 354.8 261 ePc :21.68 (-0.22X) eS :30:04.10 ( 4.66X) MOTN 357.9 290 eP+ :22.22 (-0.05X) NAV 364.3 57 eP+ :21.91 (-1.20X) HWV 377.5 52 eP+ :23.35 (-1.36X) BLA 387.4 61 eP+ :25.07 (-0.87X) VWV 403.3 57 eP+ :26.83 (-1.09X) FMKY 423.7 272 eP :32.45 ( 2.16X) RLO 976.8 277 eP :42.40 ( 4.45X) VVO 1044.4 272 eP :53.30 ( 7.13X) TUL 1046.2 275 eP :51.60 ( 5.18X) ----- *NEIS OT= 07:29:30.5 LAT= 35.567N LON= 84.229W DEP= 18.7 ML= 3.0 mb(Lg)= 4.2 NO= 19 STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKL 44.5 76 iPg 07:29:38.2 (-0.2 ) GFM 222.4 74 eP :30:05.50 ( 1.0 ) PRM 233.5 133 eP :06.40 ( 0.7 ) JSC 311.4 117 eP :14.40 (-0.1 ) LHS 333.6 110 eP :18.20 ( 0.1 ) PWLA 355.8 261 eP :21.70 ( 1.0 ) NAV 367.0 57 eP :21.90 ( 0.0 ) BLA 389.2 61 eP :24.50 (-0.4 ) SGS 433.7 127 eP :29.90 (-0.5 ) GRT 478.2 281 eP :35.80 (-0.3 ) ELC 489.3 295 eP :36.60 (-0.9 ) FVM 611.6 298 eP :53.50 (-0.3 ) POW 633.8 278 eP :54.90 (-1.0 ) RLO 978.6 277 eP? :31:40.00 ( 0.6 ) eLg 07:34:05.00 ( ) VVO 1045.3 272 eP? :53.30 ( 5.5 ) TUL 1045.3 275 ePn :51.50 ( 3.5 ) eLg :21.30 ( ) ACO 1345.5 280 eP? :32:26.50 ( 1.4 ) QZO 1367.7 271 Pn? :25.10 (-3.1 ) BW06 2324.1 298 eP :34:12.80 (-1.2 ) ----- *GIT OT= 07:29:31.5 LAT= 35.523N LON= 84.274W DEP= 20.0FXD KM MDB= 3.9 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.9 KM, AZ= -43 DEG; ERHMIN= 0.7 KM; ELLIPSE AREA= 2.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 16.9 20 P 07:29:34.10 (-1.74 ) TLT 24.6 182 P :36.10 (-0.67 ) ETT 27.4 217 P :36.90 (-0.23 ) RCT 40.4 241 P :38.85 (-0.12 ) TQTN 41.3 270 P :38.63 (-0.49 ) ORT 44.5 356 P :37.82 (-1.78 ) TKL 47.7 72 P :38.28 (-1.80 ) DCT 53.7 194 P :40.82 (-0.18 ) S 07:29:47.64 (-0.28 ) WSSR 68.9 113 P :42.23 (-1.15 ) BHT 70.4 301 P :42.70 (-0.92 ) WMTN 70.5 244 P :43.14 (-0.50 ) RHT 74.3 228 P :43.72 (-0.50 ) S :52.72 (-0.78 ) GMG 81.7 206 P :44.90 (-0.51 ) BBG 83.5 150 P :44.90 (-0.80 ) CRTN 84.6 27 P :43.53 (-2.34 ) LMTN 88.0 63 P :43.95 (-2.47 ) ONTN 107.4 352 P :47.22 (-2.30 ) RCG 115.4 238 P :50.01 (-0.79 ) CPO 118.1 274 P :50.29 (-0.95 ) ANTN 118.5 307 P :48.79 (-2.52 ) CCVA 131.5 24 P :50.65 (-2.76 ) PDTN 146.0 259 P :54.69 (-1.06 ) LKGA 148.4 228 P :54.95 (-1.19 ) TVG 158.4 217 P :57.00 (-0.76 ) ABTN 170.0 283 P :58.35 (-1.28 ) BEV 213.3 138 P :30:04.40 (-2.25 ) OCA 222.4 243 P :06.00 (-2.12 ) CHF 227.8 137 P :06.60 (-2.40 ) ATL 231.9 182 P :09.00 (-0.66 ) CH6 242.3 138 P :08.75 (-2.60 ) ETG 262.1 161 P :12.40 (-2.16 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pn 07:30:49 Sg 07:32:08 Pg :59 ***** 27 MARCH 1987; 07:35 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 07:35:38.92 LAT= 35.556N LON= 84.232W DEP= 16.7 KM MDB= 1.5 NO= 22, GAP= 48 DEG, RMS= 0.14 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= -33 DEG; ERHMIN= 0.2 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 12.4 9 iPc 07:35:42.60 ( 0.13 ) iS 07:35:45.05 (-0.01 ) TLT 28.6 189 S-P 4.02 SEC (-0.06 ) ETT 32.5 219 iP :45.05 (-0.04 ) iS :49.50 (-0.09 ) ORT 39.8 351 iP :46.30 ( 0.16 ) iS :51.29 (-0.12 ) TKL 43.1 75 eP :46.90 ( 0.26 ) iS :52.18 (-0.10 ) TQTN 45.0 265 eP :47.48 ( 0.56X) iS :52.77 ( 0.01 ) WSSR 66.9 117 ePd :50.70 ( 0.33 ) iS :58.59 (-0.13 ) WMTN 75.5 243 eP :51.54 (-0.04 ) iS :36:00.89 ( 0.07 ) RHT 79.4 228 iS :01.66 (-0.18 ) CRTN 79.8 26 eP :52.40 ( 0.16 ) eS :02.12 ( 0.15 ) LMTN 83.0 63 iS :02.54 (-0.31 ) BBG 84.8 153 eP :53.00 (-0.09 ) eS :02.80 (-0.63X) GMG 86.6 208 eS :03.90 ( 0.03 ) ANTN 113.2 307 eP :57.37 (-0.02 ) eS :11.82 ( 0.95X) SMTN 131.9 46 eS :16.80 ( 0.97X) ABTN 173.7 283 eP :36:06.96 ( 0.33 ) eS :27.77 ( 0.91X) TRYN 183.2 99 eS :31.50 ( 2.04X) ----- *GIT OT= 07:35:39.6 LAT= 35.555N LON= 84.231W DEP= 10.1 KM MDB= 1.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -39 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 12.5 8 P 07:35:42.35 ( 0.13 ) S 07:35:44.55 ( 0.38 ) TLT 28.5 190 P :44.90 ( 0.33 ) S :48.70 ( 0.46 ) ETT 32.5 219 P :45.05 (-0.14 ) S :49.50 ( 0.18 ) ORT 41.6 350 P :46.30 (-0.32 ) S :51.29 (-0.50 ) TKL 42.9 75 P :46.90 ( 0.07 ) S :52.18 ( 0.02 ) TQTN 45.4 265 P :47.48 ( 0.24 ) S :52.77 (-0.09 ) WSSR 66.9 117 P :50.70 ( 0.03 ) S :58.59 (-0.23 ) WMTN 75.6 243 P :51.54 (-0.55 ) S :36:00.89 (-0.38 ) RHT 79.5 228 S :01.80 (-0.56 ) CRTN 79.7 26 P :52.40 (-0.34 ) S :02.12 (-0.28 ) BBG 84.7 153 P :53.00 (-0.54 ) S :03.05 (-0.74 ) ***** 27 MARCH 1987; 07:53 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 07:53:37.27 LAT= 35.558N LON= 84.227W DEP= 15.9 KM MDB= -0.2 NO= 6, GAP= 360 DEG, RMS= 0.11 SEC, SDOT= 0.18 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= -62 DEG; ERHMIN= 0.6 KM; ERZ= 1.9 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 12.2 7 iS 07:54:43.25 ( 0.05 ) ETT 33.0 219 eP 07:54:43.60 ( 0.13 ) eS :47.80 (-0.19 ) ORT 39.7 350 iS :49.66 (-0.05 ) TKL 42.6 75 eP :45.50 ( 0.61X) iS :50.40 (-0.06 ) TQTN 45.5 264 eS :51.25 ( 0.05 ) ***** 27 MARCH 1987; 16:23 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 16:23:04.97 LAT= 35.546N LON= 84.230W DEP= 14.9 KM MDB= 1.5 NO= 33, GAP= 85 DEG, RMS= 0.19 SEC, SDOT= 0.04 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -40 DEG; ERHMIN= 0.2 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) NCTN 1.8 192 S-P 1.82 SEC (-0.08 ) VNTN 5.9 5 S-P 1.75 SEC (-0.27 ) BFTN 8.9 80 S-P 1.94 SEC (-0.25 ) TCTN 9.2 188 S-P 2.06 SEC (-0.15 ) GBTN 13.4 8 iP 16:23:08.60 ( 0.17 ) iS 16:23:11.00 ( 0.05 ) ETT 31.8 220 iPd :11.00 ( 0.03 ) iS :15.50 ( 0.14 ) ORT 40.9 351 iPd :12.40 ( 0.07 ) iS :17.46 (-0.25 ) TKL 43.2 73 eP :13.28 ( 0.60X) iS :18.23 (-0.08 ) RCT 45.0 240 eP :12.90 (-0.06 ) eS :18.40 (-0.39 ) TQTN 45.1 266 eP :13.41 ( 0.44 ) iS :18.61 (-0.19 ) DCT 57.2 198 eP :14.90 ( 0.05 ) eS :22.00 (-0.07 ) WSSR 66.3 116 eP :16.44 ( 0.12 ) iS :24.20 (-0.41 ) WMTN 75.2 244 eP :17.60 ( 0.01 ) iS :26.68 (-0.12 ) RHT 78.8 229 eS :27.30 (-0.45 ) CRTN 80.6 26 eP :18.51 ( 0.08 ) iS :28.27 ( 0.02 ) LMTN 83.3 63 eP :18.71 (-0.14 ) iS :28.66 (-0.33 ) BBG 83.8 153 eP :19.10 ( 0.10 ) eS :28.50 (-0.73X) GMG 85.8 208 eP :19.71 ( 0.43 ) eS :29.79 ( 0.07 ) ONTN 105.5 350 eS :34.48 (-0.41 ) RBNC 114.9 100 eS :37.90 ( 0.35 ) PDTN 150.2 259 eS :46.68 ( 0.02 ) LKGA 152.7 228 eP :30.30 ( 0.82 ) eS :48.80 ( 1.42X) SLTN 214.7 62 eP :39.09 ( 0.16X) eS :24:05.19 ( 1.46X) ----- *GIT OT= 16:23:05.4 LAT= 35.552N LON= 84.246W DEP= 14.1 KM MDB= 1.6 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -40 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 13.0 14 P 16:23:08.60 ( 0.07 ) S 16:23:11.00 ( 0.16 ) ETT 31.5 217 P :11.00 (-0.03 ) S :15.50 ( 0.32 ) ORT 41.6 352 P :12.40 (-0.17 ) S :17.46 (-0.38 ) TQTN 44.0 265 P :13.41 ( 0.47 ) S :18.61 ( 0.12 ) RCT 44.2 239 P :12.90 (-0.07 ) S :18.40 (-0.13 ) TKL 44.3 75 P :13.28 ( 0.29 ) S :18.23 (-0.34 ) DCT 57.5 196 P :14.90 (-0.15 ) S :22.00 (-0.14 ) RHT 78.3 228 S :27.30 (-0.56 ) ***** 28 MARCH 1987; 15:30 - PHILADELPHIA, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 15:30:16.63 LAT= 35.658N LON= 84.392W DEP= 8.6 KM MDB= 0.6 NO= 13, GAP= 228 DEG, RMS= 0.19 SEC, SDOT= 0.14 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= -59 DEG; ERHMIN= 0.4 KM; ERZ= 2.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CBT 13.4 191 P 15:30:20.60 ( 1.18X) iS 15:30:21.90 ( 0.45 ) GBTN 16.4 87 iP :19.95 ( 0.10 ) iS :22.05 (-0.16 ) VNTN 16.5 113 S-P 2.22 SEC (-0.14 ) NCTN 20.0 135 iP :20.62 ( 0.20 ) TCTN 25.3 148 S-P 3.34 SEC (-0.03 ) ORT 29.0 16 eP :22.14 ( 0.27 ) iS :25.65 (-0.05 ) TQTN 34.1 243 eS :26.83 (-0.29 ) ETT 37.2 189 eP :25.00 ( 1.78X) eS :27.85 (-0.18 ) TKL 55.9 90 eP :26.50 ( 0.22 ) eS :33.00 (-0.32 ) WMTN 69.7 229 eS :37.33 ( 0.09 ) BBG 101.7 149 eS :45.30 (-1.00X) ----- *GIT OT= 15:30:17.3 LAT= 35.686N LON= 84.365W DEP= 10.0 KM MDB= 0.4 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.5 KM, AZ= -78 DEG; ERHMIN= 0.4 KM; ELLIPSE AREA= 0.7 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 14.1 99 P 15:30:19.95 (-0.17 ) S 15:30:22.05 (-0.17 ) CBT 17.0 197 P :20.50 (-0.03 ) ORT 26.8 10 P :22.14 ( 0.16 ) S :25.65 ( 0.20 ) ETT 40.8 192 P :25.00 ( 0.82 ) TKL 53.6 93 P :26.50 ( 0.27 ) S :33.00 ( 0.20 ) ***** 29 MARCH 1987; 08:04 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 08:04:51.23 LAT= 35.558N LON= 84.220W DEP= 15.8 KM MDB= -1.4 NO= 7, GAP= 225 DEG, RMS= 0.10 SEC, SDOT= 0.26 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 2.0 KM, AZ= -85 DEG; ERHMIN= 0.7 KM; ERZ= 1.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CTTN 2.3 300 eS 08:05:56.14 ( 0.16 ) VNTN 4.6 355 eS :57.21 ( 1.09X) TKTN 10.6 327 iPd 08:05:54.49 (-0.01 ) eS :56.80 (-0.08 ) TCTN 10.6 192 eP :54.38 (-0.11 ) eS :56.82 (-0.05 ) BGTN 16.9 227 eP :55.41 ( 0.23 ) eS :57.98 (-0.08 ) ***** 1 APRIL 1987; 08:17 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 08:17:21.01 LAT= 35.543N LON= 84.231W DEP= 15.6 KM MDB= 1.0 NO= 22, GAP= 57 DEG, RMS= 0.11 SEC, SDOT= 0.04 SEC, Q= A, SQD= A/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -38 DEG; ERHMIN= 0.3 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CTTN 3.0 340 S-P 2.05 SEC ( 0.06 ) NRTN 4.1 322 S-P 1.98 SEC (-0.05 ) TCTN 8.8 188 S-P 2.41 SEC ( 0.17 ) BFTN 9.0 78 S-P 2.33 SEC ( 0.07 ) TKTN 11.6 335 S-P 2.27 SEC (-0.16 ) CBTN 13.0 45 S-P 2.45 SEC (-0.08 ) BCLK 13.2 286 S-P 2.45 SEC (-0.11 ) CCTN 13.7 120 S-P 2.50 SEC (-0.10 ) GBTN 13.8 7 eP 08:17:24.75 ( 0.18 ) eS 08:17:27.30 ( 0.12 ) BGTN 15.1 229 S-P 2.75 SEC ( 0.04 ) ETT 31.5 220 iPd :27.05 ( 0.08 ) eS :31.15 (-0.18 ) ORT 41.2 351 eP :28.50 ( 0.07 ) iS :33.69 (-0.17 ) TKL 43.3 73 eP :28.60 (-0.14 ) eS :34.41 ( 0.02 ) TQTN 45.0 266 iS :34.81 (-0.02 ) WSSR 66.2 116 eS :40.39 (-0.21 ) WMTN 75.0 244 eS :42.86 ( 0.08 ) BBG 83.4 153 eP :34.85 (-0.13 ) eS :44.70 (-0.48 ) ----- *GIT OT= 08:17:21.2 LAT= 35.541N LON= 84.226W DEP= 16.3 KM MDB= 0.7 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -61 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 13.9 6 P 08:17:24.75 ( 0.03 ) S 08:17:27.30 ( 0.02 ) CBT 17.7 269 P :25.10 (-0.04 ) S :27.90 (-0.12 ) ETT 31.7 221 P :27.05 ( 0.02 ) S :31.15 (-0.15 ) TKL 42.9 72 P :28.60 (-0.10 ) S :34.41 ( 0.23 ) RCT 45.2 241 P :29.30 ( 0.25 ) S :35.20 ( 0.41 ) ***** 1 APRIL 1987; 08:21 - EAGAN, TENNESSEE ***** *TEIC/TVA the computed depth for this event seems unreliable *TEIC OT= 08:21:54.60 LAT= 36.609N LON= 83.989W DEP= 27.5 KM MDB= -0.2 NO= 6, GAP= 273 DEG, RMS= 0.02 SEC, SDOT= 0.08 SEC, Q= C, SQD= A/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= 11 DEG; ERHMIN= 0.2 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CCVA 28.9 91 eP 08:22:02.71 ( 1.59X) eS 08:22:05.88 ( 0.00 ) ONTN 43.1 251 eP- :02.93 ( 0.01 ) eS :08.99 (-0.01 ) CRTN 47.3 164 eP :03.48 ( 0.00 ) eS :09.95 (-0.01 ) SMTN 76.6 109 eS :15.50 (-1.81X) ORT 82.7 200 eS :19.38 ( 0.58 ) ***** 1 APRIL 1987; 10:52 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 10:52:31.68 LAT= 35.547N LON= 84.218W DEP= 16.2 KM MDB= -1.2 NO= 9, GAP= 155 DEG, RMS= 0.10 SEC, SDOT= 0.18 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= 6 DEG; ERHMIN= 0.4 KM; ERZ= 1.0 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BFTN 7.8 79 eP 10:52:35.05 ( 0.29X) eS 10:52:37.15 ( 0.14 ) TCTN 9.5 195 eP :35.20 ( 0.31X) iS :37.28 ( 0.05 ) TKTN 11.7 329 eP :35.15 ( 0.04 ) eS :37.55 (-0.06 ) CCTN 12.9 124 iPc :35.22 (-0.01 ) iS :37.70 (-0.12 ) BCLK 14.2 283 eS :37.70 (-0.37 ) BGTN 16.2 231 eP+ :35.65 ( 0.06 ) iS :38.45 ( 0.01 ) ***** 2 APRIL 1987; 17:51 - LOUDON, TENNESSEE ***** *TEIC/TVA this event is a blast *GIT OT= 17:51:10.8 LAT= 35.682N LON= 84.371W DEP= 9.5 KM MDB= 1.8 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.8 KM, AZ= -28 DEG; ERHMIN= 0.6 KM; ELLIPSE AREA= 1.4 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 14.6 97 P 17:51:13.95 ( 0.29 ) S 17:51:16.10 ( 0.32 ) CBT 16.4 196 P :12.90 (-1.01 ) ETT 40.2 191 P :16.60 (-0.98 ) RCT 45.7 215 P :19.00 ( 0.54 ) S :24.50 ( 0.39 ) TKL 54.1 93 P :20.20 ( 0.38 ) S :27.20 ( 0.74 ) DCT 69.8 184 P :22.10 (-0.23 ) S :31.00 ( 0.18 ) RHT 81.6 215 P :25.80 ( 1.56 ) BBG 103.2 150 P :27.40 (-0.32 ) ***** 3 APRIL 1987; 21:35 - NIOTA, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 21:35:34.93 LAT= 35.581N LON= 84.588W DEP= 6.7 KM MDB= 1.1 NO= 21, GAP= 79 DEG, RMS= 0.23 SEC, SDOT= 0.07 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= -40 DEG; ERHMIN= 0.3 KM; ERZ= 2.0 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TQTN 14.4 240 eP 21:35:37.78 ( 0.05 ) iS 21:35:39.76 (-0.02 ) ETT 30.8 157 eP :40.55 ( 0.12 ) eS :44.10 (-0.34 ) GBTN 35.5 74 iP :41.50 ( 0.31 ) iS :45.50 (-0.26 ) ORT 44.6 35 eP :42.86 ( 0.17 ) iS :48.62 ( 0.26 ) WMTN 50.8 224 eP :44.02 ( 0.29 ) iS :50.19 ( 0.04 ) TKL 74.3 83 eS :56.52 (-0.32 ) GMG 80.0 185 eS :58.90 ( 0.34 ) ANTN 87.6 319 iPc :49.38 (-0.43 ) eS :36:00.34 (-0.33 ) CPO 89.3 272 eS :00.41 (-0.75 ) CRTN 96.3 44 eP- :50.92 (-0.32 ) WSSR 97.7 110 eP :51.59 ( 0.06 ) eS :02.86 (-0.79 ) BBG 105.6 138 eP :52.60 (-0.20 ) eS :06.10 ( 0.26 ) ABTN 141.7 284 eS :14.98 (-0.26 ) ----- *GIT OT= 21:35:35.2 LAT= 35.603N LON= 84.581W DEP= 9.3 KM MDB= 1.1 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.5 KM, AZ= 35 DEG; ERHMIN= 0.4 KM; ELLIPSE AREA= 0.5 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CBT 16.1 116 P 21:35:38.00 (-0.28 ) S 21:35:41.00 ( 0.45 ) ETT 32.8 160 P :40.55 (-0.27 ) S :44.10 (-0.85 ) GBTN 34.2 78 P :41.50 ( 0.45 ) S :45.50 ( 0.14 ) DCT 62.6 166 P :46.10 ( 0.50 ) S :53.40 ( 0.16 ) RHT 64.4 205 P :46.10 ( 0.21 ) S :54.10 ( 0.36 ) TKL 73.3 85 S :56.31 ( 0.08 ) ***** 4 APRIL 1987; 00:31 - MT. VERNON, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 00:31:24.03 LAT= 35.471N LON= 84.337W DEP= 9.6 KM MDB= 0.3 NO= 18, GAP= 122 DEG, RMS= 0.12 SEC, SDOT= 0.08 SEC, Q= B, SQD= A/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.4 KM, AZ= -45 DEG; ERHMIN= 0.3 KM; ERZ= 0.7 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BGTN 2.5 223 iPc 00:31:25.93 ( 0.13 ) iS 00:31:27.01 (-0.09 ) TCTN 8.5 95 iP+ :26.38 ( 0.11 ) iS :27.94 ( 0.03 ) NCTN 11.4 54 iPd :26.49 (-0.14 ) iS :28.31 (-0.22 ) BCLK 12.1 345 iPc :26.87 ( 0.14 ) iS :28.68 (-0.03 ) CTTN 13.8 38 eP :26.70 (-0.26 ) eS :29.12 ( 0.02 ) ETT 19.3 214 iP :27.70 (-0.08 ) iS :30.30 (-0.22 ) BFTN 21.0 62 iPc :28.06 ( 0.04 ) iS :30.93 ( 0.00 ) CCTN 21.5 87 eP :28.20 ( 0.09 ) iS :31.06 (-0.03 ) GBTN 24.5 28 iP :28.60 ( 0.02 ) iS :31.60 (-0.30 ) ----- *GIT OT= 00:31:24.4 LAT= 35.488N LON= 84.384W DEP= 9.8 KM MDB= -0.1 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.4 KM, AZ= -25 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.2 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CBT 6.6 330 P 00:31:26.30 (-0.06 ) S 00:31:27.90 ( 0.11 ) ETT 19.1 200 P :27.95 (-0.01 ) GBTN 25.2 39 P :29.00 ( 0.12 ) S :32.00 (-0.16 ) ***** 4 APRIL 1987; 14:23 - WILDWOOD, TENNESSEE ***** *TEIC OT= 14:23:55.08 LAT= 35.806N LON= 83.868W DEP= 20.7 KM MDB= 0.0 NO= 12, GAP= 142 DEG, RMS= 0.10 SEC, SDOT= 0.11 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= -38 DEG; ERHMIN= 0.3 KM; ERZ= 1.3 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKL 18.5 153 eP 14:24:00.67 ( 0.96X) eS 14:24:03.25 ( 0.16 ) CBTN 31.0 230 eP :02.10 ( 0.86X) eS :06.60 ( 0.87X) BFTN 36.4 221 iPc :02.00 ( 0.01 ) iS :07.00 (-0.03 ) ORT 41.1 286 eP :01.49 (-1.18X) eS :08.13 (-0.08 ) CCTN 41.8 210 eP :02.85 ( 0.08 ) iS :08.30 (-0.08 ) LMTN 42.3 78 eP+ :02.89 ( 0.02 ) eS :08.38 (-0.18 ) CRTN 43.7 3 eP+ :03.17 ( 0.11 ) eS :08.37 (-0.52 ) TCTN 51.0 222 eP :04.80 ( 0.69X) eS :10.60 (-0.11 ) BGTN 59.0 229 eS :13.00 ( 0.21 ) ***** 5 APRIL 1987; 01:40 - SHIELDS, VIRGINIA ***** *VTSO OT= 01:40:28.29 LAT= 37.282N LON= 78.642W DEP= 6.3 KM MDB= 2.0 NO= 13, GAP= 209 DEG, RMS= 0.34 SEC, SDOT= 0.31 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 2.5 KM, AZ= 81 DEG; ERHMIN= 1.0 KM; ERZ= 7.2 KM; Q= D) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) FRV 26.5 109 eP 01:40:32.67 (-0.10 ) eS 01:40:36.16 ( 0.12 ) GHV 73.9 40 eP :40.41 (-0.06 ) eS :48.52 (-0.84 ) CVL 79.2 12 eS :50.90 ( 0.03 ) NA12 102.9 41 eP :45.70 ( 0.49 ) eS :57.76 ( 0.20 ) PBV 104.1 108 eP :45.16 (-0.25 ) eS :57.97 ( 0.05 ) NA2 122.6 40 eP :48.99 ( 0.55 ) eS :41:03.29 ( 0.14 ) BV1 134.0 318 eP :49.97 (-0.34 ) eS :06.44 ( 0.15 ) Additional data: Operator - VDMR STA PHASE ARRIVAL TIME PHASE ARRIVAL TIME CVV Pg 01:40:42 Sg 01:40:51 ***** 5 APRIL 1987; 07:09 - ENGLEWOOD, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 07:09:05.48 LAT= 35.458N LON= 84.438W DEP= 9.3 KM MDB= -1.2 NO= 6, GAP= 360 DEG, RMS= 0.14 SEC, SDOT= 0.59 SEC, Q= D, SQD= C/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 2.2 KM, AZ= -70 DEG; ERHMIN= 1.0 KM; ERZ= 4.2 KM; Q= C) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BGTN 7.4 94 iPc 07:09:07.76 ( 0.17 ) iS 07:09:09.07 (-0.06 ) BCLK 14.5 25 eS :10.69 ( 0.00 ) ETT 14.7 186 eS :10.60 (-0.18 ) TCTN 17.6 88 eS :11.39 (-0.07 ) TKTN 24.3 35 eS :13.08 (-0.20 ) ***** 8 APRIL 1987; 23:32 - TALLASSEE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 23:32:59.18 LAT= 35.544N LON= 84.103W DEP= 21.1 KM MDB= 0.0 NO= 15, GAP= 236 DEG, RMS= 0.09 SEC, SDOT= 0.11 SEC, Q= C, SQD= B/D ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.5 KM, AZ= 14 DEG; ERHMIN= 0.5 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) BFTN 3.2 302 iP 23:33:02.80 ( 0.06 ) iS 23:33:05.50 ( 0.16 ) CCTN 7.0 178 iPd :02.80 (-0.11 ) iS :05.50 (-0.13 ) CBTN 9.3 345 eS :05.70 (-0.13 ) NCTN 12.0 263 ePd :03.25 ( 0.02 ) iS :06.20 ( 0.02 ) CTTN 12.9 282 eP :03.00 (-0.30X) eS :06.10 (-0.21 ) TCTN 15.6 235 iP :03.60 ( 0.06 ) iS :06.85 ( 0.12 ) TKTN 19.4 302 eP :04.00 ( 0.05 ) eS :07.40 (-0.03 ) BCLK 24.5 278 eS :08.45 (-0.02 ) BGTN 25.1 246 iPc :04.60 (-0.02 ) eS :08.50 (-0.08 ) ***** 9 APRIL 1987; 01:31 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 01:31:23.34 LAT= 35.561N LON= 84.226W DEP= 17.4 KM MDB= 2.7 NO= 49, GAP= 39 DEG, RMS= 0.18 SEC, SDOT= 0.03 SEC, Q= B, SQD= B/A ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.3 KM, AZ= -28 DEG; ERHMIN= 0.2 KM; ERZ= 0.4 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) CTTN 1.7 300 S-P 2.09 SEC (-0.08 ) NRTN 3.2 293 S-P 2.05 SEC (-0.16 ) NCTN 3.4 193 S-P 2.20 SEC ( 0.00 ) BFTN 8.4 91 S-P 2.90 SEC ( 0.50 ) TKTN 10.0 329 S-P 2.38 SEC (-0.11 ) TCTN 10.9 188 S-P 2.75 SEC ( 0.21 ) CBTN 11.4 51 S-P 2.50 SEC (-0.07 ) GBTN 11.8 7 iPc 01:31:27.24 ( 0.33 ) iS 01:31:29.62 ( 0.10 ) BCLK 13.2 278 iP :27.50 ( 0.45X) CCTN 14.4 128 S-P 2.80 SEC ( 0.00 ) BGTN 16.7 225 S-P 2.99 SEC ( 0.01 ) ETT 33.3 219 iPd :29.86 ( 0.21 ) iS :34.02 (-0.23 ) ORT 39.4 350 iPc :30.60 ( 0.08 ) iS :35.69 (-0.08 ) TKL 42.4 75 iP :31.04 ( 0.07 ) iS :36.45 (-0.09 ) TQTN 45.6 264 ePd :31.42 (-0.02 ) iS :37.11 (-0.24 ) HPK 51.3 38 S-P 6.38 SEC (-0.18 ) WSSR 66.7 118 ePc :35.16 ( 0.40 ) iS :42.86 (-0.24 ) BHT 72.4 296 ePc :35.80 ( 0.22 ) eS :44.90 ( 0.38 ) WMTN 76.2 243 iPd :36.10 (-0.02 ) iS :45.45 (-0.01 ) CRTN 79.0 26 eP- :36.25 (-0.31 ) eS :46.30 ( 0.09 ) LMTN 82.2 64 eP- :36.73 (-0.34 ) iS :46.90 (-0.19 ) BBG 85.0 153 iPc :37.88 ( 0.32 ) iS :47.72 (-0.22 ) GMG 87.4 208 eP :37.96 ( 0.07 ) eS :48.20 (-0.32 ) ONTN 104.0 349 ePc :40.05 (-0.35 ) iS :52.71 (-0.15 ) ANTN 113.3 307 iPc :41.63 (-0.19 ) RBNC 114.8 101 eP+ :42.58 ( 0.42 ) eS :55.86 (-0.03 ) RCG 121.0 238 eP :43.56 ( 0.58 ) eS :57.20 (-0.12 ) CPO 122.2 273 eP :43.30 ( 0.12 ) iS :57.64 (-0.02 ) CCVA 126.1 23 eP :45.78 ( 2.01X) eS :32:01.55 ( 2.87X) SMTN 131.1 46 eP :44.88 ( 0.34 ) eS :01.16 ( 1.13X) RICH 133.4 72 eP :45.96 ( 1.04X) eS :01.88 ( 1.21X) PDTN 150.8 258 eP :47.66 ( 0.13 ) eS :05.35 ( 0.15 ) BRTN 151.0 54 eP- :47.80 ( 0.21 ) iS :07.40 ( 2.10X) LKGA 154.0 228 eP :47.90 (-0.15 ) iS :08.47 ( 2.38X) ABTN 174.1 282 eP- :50.72 (-0.38 ) iS :13.04 ( 1.67X) BRBC 176.8 83 eP :52.20 ( 0.55 ) eS :12.20 (-0.12 ) SLTN 213.6 62 eP- :57.27 ( 0.13X) eS :23.27 ( 1.46X) GFM 226.9 74 eP :59.66 ( 0.34X) iS :26.02 ( 0.43X) BENN 232.5 89 eP :59.68 (-0.32X) eS :26.20 (-0.57X) MSAL 236.5 251 eP :32:00.10 (-0.31X) eS :27.87 ( 0.40X) SHTN 263.6 268 eP :03.88 ( 0.14X) eS :34.20 ( 0.97X) PKNC 282.5 78 eP :08.02 ( 1.92X) eS :37.26 (-0.06X) ----- *GIT OT= 01:31:23.8 LAT= 35.545N LON= 84.221W DEP= 15.0 KM MDB= 2.5 ERROR ELLIPSE PROJECTED SEMI-AXES (LOCA) (ERHMAX= 0.3 KM, AZ= -47 DEG; ERHMIN= 0.2 KM; ELLIPSE AREA= 0.1 SQ KM) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GBTN 13.4 4 P 01:31:27.24 ( 0.14 ) S 01:31:29.62 ( 0.10 ) CBT 18.1 268 P :27.50 (-0.16 ) S :30.37 (-0.11 ) TLT 27.7 192 P :29.20 ( 0.24 ) S :33.00 ( 0.26 ) ETT 32.3 221 P :29.86 ( 0.22 ) S :34.02 ( 0.11 ) TKL 42.3 73 P :31.18 ( 0.04 ) S :36.64 ( 0.12 ) RCT 45.8 241 P :32.30 ( 0.62 ) DCT 57.4 198 P :33.60 ( 0.11 ) S :41.50 ( 0.91 ) WSSR 65.6 117 P :35.16 ( 0.39 ) S :42.86 ( 0.05 ) BHT 73.5 297 P :35.80 (-0.22 ) RHT 79.6 229 P :36.70 (-0.28 ) S :46.80 ( 0.16 ) BBG 83.4 153 P :37.88 ( 0.30 ) S :47.72 ( 0.04 ) GMG 86.2 209 P :37.96 (-0.07 ) S :48.20 (-0.25 ) CDG 111.4 202 P :41.80 (-0.24 ) S :54.80 (-0.61 ) RBNC 114.2 101 P :42.58 ( 0.11 ) S :55.86 (-0.29 ) RCG 120.8 238 P :43.56 ( 0.03 ) S :57.20 (-0.79 ) CCVA 127.4 23 P :44.50 (-0.06 ) S :32:00.25 ( 0.47 ) SMTN 131.5 45 P :44.88 (-0.34 ) RICH 133.2 72 P :45.50 ( 0.02 ) TVG 163.4 218 P :49.70 (-0.54 ) BRBC 176.3 83 S :12.20 (-0.94 ) GFM 226.2 74 P :59.66 (-0.35 ) S :26.02 (-0.52 ) OCA 227.9 243 S :26.80 (-0.18 ) ATL 234.5 183 S :28.20 (-0.54 ) ***** 9 APRIL 1987; 01:36 - VONORE, TENNESSEE ***** *TEIC Aftershock of 3/27/87 07:29 event *TEIC OT= 01:36:07.78 LAT= 35.570N LON= 84.240W DEP= 16.5 KM MDB= -1.2 NO= 6, GAP= 124 DEG, RMS= 0.03 SEC, SDOT= 0.13 SEC, Q= B, SQD= B/B ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 1.0 KM, AZ= 90 DEG; ERHMIN= 0.8 KM; ERZ= 0.6 KM; Q= A) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) TKTN 8.5 332 S-P 2.35 SEC ( 0.03 ) BFTN 9.7 96 S-P 2.30 SEC (-0.08 ) TCTN 11.7 182 iP 01:36:11.20 (-0.02 ) iS 01:36:13.75 ( 0.02 ) BCLK 11.9 274 S-P 2.50 SEC (-0.04 ) CCTN 16.0 128 eS :13.65 (-0.89X) BGTN 16.6 219 S-P 2.90 SEC ( 0.00 ) ***** 11 APRIL 1987; 03:30 - MICHAUX, VIRGINIA ***** *VTSO OT= 03:30:20.93 LAT= 37.664N LON= 77.903W DEP= 8.7 KM MDB= 1.7 NO= 16, GAP= 136 DEG, RMS= 0.22 SEC, SDOT= 0.09 SEC, Q= C, SQD= B/C ERROR ELLIPSE PROJECTED SEMI-AXES (HYPOELLIPSE; CHI SQUARE 68% 1 DOF) (ERHMAX= 0.6 KM, AZ= -84 DEG; ERHMIN= 0.4 KM; ERZ= 1.4 KM; Q= B) STA DIST (KM) AZM PHASE ARRIVAL TIME (RES) PHASE ARRIVAL TIME (RES) GHV 23.1 309 iPc 03:30:25.18 ( 0.18 ) iS 03:30:28.05 ( 0.09 ) NA12 35.5 3 iPc :27.15 ( 0.21 ) iS :31.18 (-0.14 ) NA5 41.2 21 ePc :27.97 ( 0.12 ) eS :32.64 (-0.26 ) NA2 53.2 15 ePc :29.85 ( 0.06 ) eS :35.88 (-0.37 ) CVL 60.5 306 eP :31.21 ( 0.24 ) eS :38.20 (-0.09 ) FRV 65.2 218 ePc :31.76 ( 0.02 ) eS