Phase Data

Explanation of Parameters


     16 FEB 2013  ( 47)

     ot  = 22:43:43.40   +/-   2.08              SOUTHERN MID-ATLANTIC RIDGE     
     lat =     -15.602   +/-   10.4
     lon =     -13.209   +/-    8.1              MAGNITUDE 5.2 (GS)       
     dep =        15.1   +/-    3.7   

     805 km (500 miles) W of Saint Helena
     855 km (531 miles) S of Ascension Island
     3761 km (2336 miles) WNW of Cape Town, South Africa

     nph =   68 of  68    se = 1.02    FE=410                            A   

     error ellipse = (143.0,  1.0, 19.5; 52.0, 48.0,  7.4;235.0, 41.0,  1.9)

 mb = 5.2 ( 59)  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
 SHEL ePn     22:45:24.34  -3.8    7.2  94                                   SHEL
 DBIC eP      22:48:52.22  -2.0   23.6  21 b:1.0+2 1.6 5.1                   DBIC
 TOA0 eP      22:50:09.15  -1.4   32.1  28                                   TOA0
      eP      22:50:10.05  -0.5 
 BDFB eP      22:50:22.77   0.1   33.5 265 b:2.4+1 1.3 4.9                   BDFB
 SUR  eP      22:50:35.30  -1.1   35.1 125 b:1.0+2 1.9 5.4                   SUR 
 LSZ  eP      22:51:17.78   0.9   39.9  95 b:4.7+1 1.7 4.9                   LSZ 
 CPUP eP      22:51:36.87  -0.5   42.4 248 b:1.9+1 1.3 4.7                   CPUP
 MBAR eP      22:52:07.24   1.6   45.8  75 b:2.1+1 1.5 4.9                   MBAR
 PTGA eP      22:52:26.56   1.0   48.4 283 b:2.1+1 1.3 5.0                   PTGA
 PB01 eP      22:53:03.16  -0.5   53.5 255 b:3.4+1 1.5 5.1                   PB01
 GO04 eP      22:53:09.40  -1.6   54.5 244 b:6.5+1 1.1 5.6                   GO04
 LCO  eP      22:53:09.56  -0.7   54.4 245 b:4.7+1 1.0 5.5                   LCO 
 PAB  eP      22:53:16.98  -0.7   55.5   8 b:9.7+0 1.3 4.7                   PAB 
 ESLA eP      22:53:17.96  -1.0   55.7   9 b:6.5+0 1.1 4.6                   ESLA
 KEST eP      22:53:18.20   1.4   55.3  22 b:4.6+1 1.1 5.4                   KEST
 ES19 eP      22:53:18.92  -0.3   55.7   9                                   ES19
 SNAA eP      22:53:23.81  -0.1   56.4 176 b:2.1+1 1.3 5.0                   SNAA
 SDV  eP      22:54:03.72   0.9   61.9 289 b:3.2+1 .95 5.5                   SDV 
 IDI  eP      22:54:05.03   0.6   62.2  35 b:2.5+1 1.2 5.3                   IDI 
 SSB  eP      22:54:07.59   0.0   62.7  14 b:1.6+1 1.2 5.1                   SSB 
 AQU  eP      22:54:08.18   0.7   62.7  22 b:4.4+1 1.2 5.5                   AQU 
 BNI  eP      22:54:10.55   0.7   63.0  16 b:1.5+1 1.3 5.0                   BNI 
 TTG  eP      22:54:23.74   0.8   65.0  26 b:2.2+1 1.1 5.2                   TTG 
 ECH  eP      22:54:29.24  -0.4   66.1  15 b:2.1+1 1.3 5.2                   ECH 
 BFO  eP      22:54:31.80  -0.4   66.5  16 b:1.6+1 1.1 5.1                   BFO 
 OTAV eP      22:54:33.74   1.6   66.3 277 b:8.8+0 1.1 4.8                   OTAV
 DIVS eP      22:54:33.74  -0.1   66.7  26 b:2.5+1 1.3 5.2                   DIVS
 VTS  eP      22:54:35.24  -0.1   66.9  29 b:9.9+0 1.0 4.9                   VTS 
 WLF  eP      22:54:36.89   0.2   67.2  14 b:8.9+1 1.2 5.8                   WLF 
 GEA0 eP      22:54:43.87  -1.0   68.5  19                                   GEA0
 GEC2 eP      22:54:44.51  -0.4   68.5  19 b:1.4+1 1.4 4.9                   GEC2
 KHC  eP      22:54:45.66  -0.5   68.7  19 b:5.1+0 1.5 4.5                   KHC 
 PSZ  eP      22:54:53.59   0.4   69.8  23 b:5.7+1 1.8 5.4                   PSZ 
 ANTO eP      22:54:55.61   1.9   69.9  36 b:3.1+1 1.2 5.3                   ANTO
 BR131eP      22:54:56.77   0.7   70.2  37                                   BR13
 MORC eP      22:54:57.59   0.1   70.5  21 b:1.9+1 1.3 5.1                   MORC
 MLR  eP      22:54:58.13   1.2   70.4  28 b:5.9+1 1.3 5.6                   MLR 
 OJC  eP      22:55:03.97  -0.5   71.7  22 b:2.2+1 1.2 5.1                   OJC 
 BUR04eP      22:55:04.90   0.1   71.7  26                                   BUR0
 QSPA eP      22:55:21.92   0.4   74.6 180 b:4.4+1 1.4 5.3                   QSPA
 SIRT eP      22:55:22.01   1.5   74.3  43 b:5.5+1 1.2 5.4                   SIRT
 KIEV eP      22:55:26.93  -1.4   75.8  26 b:1.9+1 1.1 5.1                   KIEV
 AK11 eP      22:55:27.12  -1.0   75.7  26                                   AK11
 AKBB eP      22:55:27.60  -0.8   75.8  26 b:1.8+1 1.0 5.1                   AKBB
 KIV  eP      22:55:42.46   0.3   78.2  38 b:4.5+1 1.5 5.3                   KIV 
 UOSS eP      22:55:45.82   0.2   78.7  60 b:1.7+1 .75 5.2                   UOSS
 SSPA eP      22:56:03.86   1.3   81.9 316 b:2.8+1 1.2 5.2                   SSPA
 TRQ  eP      22:56:05.23  -0.9   82.6 322                                   TRQ 
 FIA1 eP      22:56:06.97   0.0   82.9  18                                   FIA1
      eP      22:56:08.20   1.2 
 SCHQ eP      22:56:10.57   0.0   83.5 332 b:5.1+1 1.8 5.4                   SCHQ
 M54A eP      22:56:10.87   0.0   83.5 316 b:2.4+1 1.0 5.3                   M54A
 N54A eP      22:56:11.87   1.1   83.5 316 b:2.7+1 1.0 5.4                   N54A
 SADO eP      22:56:16.42  -0.3   84.7 319 b:1.5+1 1.0 5.2                   SADO
 O52A eP      22:56:16.55   1.3   84.4 314 b:1.2+2 1.9 5.8                   O52A
 VLDQ eP      22:56:19.87  -0.7   85.5 323 b:1.2+1 1.2 5.0                   VLDQ
 V48A eP      22:56:25.72   1.1   86.2 309 b:5.2+1 1.7 5.4                   V48A
 WVT  eP      22:56:27.97  -1.0   87.1 309 b:2.4+1 1.4 5.3                   WVT 
 FVM  eP      22:56:42.45   1.2   89.7 310 b:2.6+1 1.4 5.3                   FVM 
 CCM  eP      22:56:45.11   0.9   90.4 309 b:6.9+1 1.8 5.6                   CCM 
 ABKAReP      22:56:47.47   0.2   91.1  39                                   ABKA
 W39A eP      22:56:49.37   0.3   91.4 306 b:4.0+1 1.5 5.5                   W39A
 HHAR eP      22:56:51.42   0.3   91.8 307 b:2.3+1 1.4 5.4                   HHAR
 ARU  eP      22:56:57.20   0.6   93.1  32 b:1.2+1 1.3 5.2                   ARU 
 BILL ePKPdf  23:02:47.14  -0.3  127.6   0                                   BILL
 AS01 ePKPdf  23:02:50.44  -2.0  129.5 140                                   AS01
 INU  ePKPdf  23:03:24.86   1.1  146.9  48                                   INU 



 Generated 2013 FEB 16 at 23:21 UTC

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