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Earthquake Hazards Program
Phase Data

Explanation of Parameters


      5 JUL 2007  (186)

     ot  = 13:26:22.82   +/-   0.33              SOUTHERN MID-ATLANTIC RIDGE     
     lat =     -42.251   +/-   11.3
     lon =     -19.588   +/-    8.3              MAGNITUDE 5.2 (GS)       
     dep =        10.0  (geophysicist)

     855 km (530 miles) SW of Tristan da Cunha
     3435 km (2130 miles) WSW of Cape Town, South Africa

     nph =   36 of  56    se = 1.13    FE=410                            B   

     error ellipse = (178.6,  0.0, 14.8; 88.6,  0.0, 10.9;  0.0,  0.0,  0.0)

 mb = 5.2 ( 18)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 TRQA eP      13:32:53.18   0.2   32.4 263 b:2.1+1 .75 5.2                   TRQA
 CPUP eP      13:33:12.75   0.2   34.7 285 b:1.1+2 .83 5.8                   CPUP
 PLCA eP      13:33:39.33   0.5   37.7 255 b:1.9+1 .88 4.9                   PLCA
 BOSA eP      13:33:45.05  -0.8   38.6  84 b:1.2+1 .90 4.6                   BOSA
 TSUM eP      13:33:48.87   0.0   38.9  65 b:6.0+1 1.4 5.1                   TSUM
 LBTB eP      13:34:04.38  -0.5   40.8  80 b:4.3+1 1.3 5.0                   LBTB
 LVC  eP      13:34:49.37   8.1X  45.3 280 b:1.4+1 1.1 4.8                   LVC 
 LPAZ eP      13:35:07.90  -1.0   48.8 287 b:2.3+1 1.3 5.1                   LPAZ
 MAW  eP      13:35:08.63  -0.5   49.0 150 b:1.7+1 .78 5.1                   MAW 
 LSZ  eP      13:35:09.78   0.4   48.9  71 b:2.1+1 .90 5.2                   LSZ 
 TOA0 eP      13:36:19.04  -0.5   58.5  24                                   TOA0
 SBA  eP      13:36:30.55   0.9   60.1 182 b:8.1+1 1.3 5.7                   SBA 
 VNDA eP      13:36:32.76   0.4   60.5 180 b:7.5+1 1.4 5.6                   VNDA
 CASY P       13:37:04.28   0.4   65.2 160 b:1.1+2 1.5 5.8                   CASY
 OTAV P       13:37:24.76   4.4X  67.6 292 b:2.3+1 1.1 5.3                   OTAV
 ROSC P       13:37:29.05   4.7X  68.2 299                                   ROSC
 SDV  P       13:37:29.33   0.6   69.0 305 b:4.3+1 1.0 5.6                   SDV 
 ESLA P       13:38:48.75   2.1   82.8  12 b:1.5+1 1.2 5.0                   ESLA
 TGUH         13:38:48.94  -2.4   83.6 295                                   TGUH
 PAB  P       13:38:50.22   4.5X  82.6  12 b:3.7+1 1.3 5.4                   PAB 
 BNI  P       13:39:25.27   2.9   90.0  18 b:3.3+1 1.1 5.5                   BNI 
 TPNV ePKPdf  13:45:05.14  -4.6X 118.0 296                                   TPNV
 LDFC         13:45:09.72   3.4X 116.2 294                                   LDFC
 RWWY         13:45:10.91   7.2X 114.9 304                                   RWWY
 CCUT P       13:45:11.41   4.6X 116.4 298                                   CCUT
 ELK  ePKPdf  13:45:12.97   0.6  119.4 300                                   ELK 
 HRY  P       13:45:14.43   0.5  120.4 307                                   HRY 
      e       13:45:22.77   5.4X
 MVU  e       13:45:14.56   8.2X 116.2 299                                   MVU 
 CHMT ePKPdf  13:45:15.59  -0.3  121.3 307                                   CHMT
 ARUT P       13:45:15.85   8.8X 116.6 298                                   ARUT
 DLMT ePKPdf  13:45:16.14   2.5  120.2 305                                   DLMT
 MK31 P       13:45:24.40  -0.7  126.3  57                                   MK31
 INK  ePKPdf  13:45:45.05   0.1  137.2 330                                   INK 
 EGAK ePKPdf  13:45:49.19  -2.0  140.5 325                                   EGAK
 COLA ePKPdf  13:45:54.99  -1.2  143.3 326                                   COLA
 BMRM ePKPdf  13:45:55.87   1.1  142.4 319                                   BMRM
 MCK  ePKPdf  13:45:56.53  -1.0  144.0 324                                   MCK 
 PMR  ePKPdf  13:45:57.01  -1.3  144.5 321                                   PMR 
 IMA2 ePKPbc  13:45:59.70   0.0  145.3 329                                   IMA2
 SLKM ePKPbc  13:46:00.00   0.6  145.2 319                                   SLKM
 TTA  ePKPdf  13:46:02.59  -0.6  147.3 324                                   TTA 
      ePKPbc  13:46:06.40   0.7X
      ePKPab  13:46:08.46   0.9X
 TIXI ePKPbc  13:46:02.67  -0.9  146.7  18                                   TIXI
 SVW2 ePKPdf  13:46:02.97  -0.8  147.7 321                                   SVW2
      ePKPbc  13:46:06.91   0.3X
      ePKPab  13:46:09.33   0.5X
 KDAK ePKPbc  13:46:04.48   0.3  146.8 314                                   KDAK
 YAK  P       13:46:08.02  -4.1X 153.1  32                                   YAK 
 TNA  ePKPbc  13:46:14.48   0.5  150.7 333                                   TNA 
      ePKPab  13:46:21.91   0.9X
 SDPT ePKPbc  13:46:15.97  -0.2  151.5 311                                   SDPT
      ePKPab  13:46:25.02   0.3X
 BILL P       13:46:23.64  10.4X 154.0 355                                   BILL
      e       13:46:29.34  -8.7X



 Generated 2007 JUL  5 at 14:27 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

 


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