Phase Data

Explanation of Parameters


     25 MAR 2013  ( 84)

     ot  = 06:27:35.56   +/-   2.08              OFFSHORE CHIAPAS, MEXICO        
     lat =      15.899   +/-   18.4
     lon =     -93.988   +/-   11.7              MAGNITUDE 4.1 (GS)       
     dep =        78.4   +/-   24.2   

     42 km (26 miles) SW of Tonala, Chiapas, Mexico (pop 31,000)
     132 km (82 miles) SW of Tuxtla Gutierrez, Chiapas, Mexico (pop 490,000)
     397 km (247 miles) WNW of GUATEMALA, Guatemala
     673 km (418 miles) SE of MEXICO CITY, D.F., Mexico

     nph =   30 of  41    se = 1.03    FE=069                            B   

     error ellipse = (159.0, 61.0, 40.2; 19.0, 23.0, 24.6;282.0, 16.0, 15.8)

 mb = 4.1 ( 23)  ML = 3.9 (  4)  mblg = 0.0 (  0)  md = 4.5 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 CCIG ePn     06:28:05.54   0.3    1.8  78 d:2.2+2     4.5  L:2.4+0 .50 4.0  CCIG
      eSn     06:28:26.75  S res =  -0.9 
 LVIG ePn     06:28:39.36  -1.3    4.5 329                                   LVIG
      eSn     06:29:27.91  S res =  -3.3 
 TLIG ePn     06:28:43.71  -0.3    4.7 291 L:2.3-1 .65 4.0                   TLIG
      eSn     06:29:33.92  S res =  -3.3 
 MYIG ePn     06:29:08.59   0.7    6.5  38                                   MYIG
      eSn     06:30:21.29  S res =   1.2 
 TGUH ePn     06:29:10.30  -1.8    6.7 105                                   TGUH
 MOIG ePn     06:29:28.36   1.5    7.8 300                                   MOIG
 435B eP      06:31:10.10   1.3X  15.2 348 b:1.2+1 .65 4.3                   435B
 TX31 ePn     06:31:16.58  -0.5   16.1 328                                   TX31
      ePn     06:31:18.60   1.7 
 WHTX ePn     06:31:20.21   0.2   16.3 350 b:7.1+0 .80 3.9                   WHTX
 ABTX ePn     06:31:34.05   0.5   17.4 344 b:1.2+1 .55 4.3                   ABTX
 MIAR eP      06:31:46.22  -0.1   18.6   1 b:5.1+0 .55 4.0                   MIAR
 X37A eP      06:31:47.80   0.6   18.6 356 b:3.9+0 1.1 3.6                   X37A
 W41B eP      06:31:51.61  -2.2   19.3   4                                   W41B
 Y49A eP      06:31:52.16  -0.4   19.1  20                                   Y49A
 W39A eP      06:31:53.87   0.5   19.2   1                                   W39A
 WMOK eP      06:31:53.92   0.2   19.3 348 b:3.3+0 .55 3.8                   WMOK
 MSTX eP      06:31:58.31   0.0   19.7 338 b:1.7+1 .90 4.3                   MSTX
 AMTX eP      06:32:04.06   0.7   20.1 341 b:3.5+1 .60 4.9                   AMTX
 BNM  eP      06:32:17.59  -0.1   21.4 330                                   BNM 
 LENM eP      06:32:21.25   1.7   21.6 330                                   LENM
 ANMO eP      06:32:24.74   1.0   22.0 332 b:2.6+0 .90 3.7                   ANMO
 T25A eP      06:32:35.58   0.7   23.1 338 b:5.3+0 .70 4.1                   T25A
 CBKS eP      06:32:37.94   0.6   23.4 349 b:3.0+1 .65 4.8                   CBKS
 SDCO eP      06:32:43.05  -0.5   24.0 337                                   SDCO
 113A eP      06:32:50.82   2.7   24.6 317 b:4.4+0 .80 4.0                   113A
 SPMN eP      06:33:28.77  -1.3   29.3   2 b:8.7+0 .75 4.5                   SPMN
 REDW eP      06:33:45.89   0.7X  30.9 336 b:3.2+0 .90 4.0                   REDW
 SNOW eP      06:33:46.79   1.2X  31.0 336 b:6.0+0 .85 4.3                   SNOW
 LOHW eP      06:33:47.06   0.9X  31.0 336 b:3.3+0 1.0 4.0                   LOHW
 NV01 eP      06:33:47.20   1.3X  31.0 321                                   NV01
 TPAW eP      06:33:47.46   0.9X  31.1 336 b:2.8+0 .95 4.0                   TPAW
 MOOW eP      06:33:48.46   0.8X  31.2 336 b:7.0-1 .70 3.5                   MOOW
 AGMN eP      06:33:55.75  -1.6X  32.3 358 b:6.3+0 .55 4.6                   AGMN
 YMR  eP      06:33:57.27   2.0X  32.1 337 b:6.6+0 1.0 4.4                   YMR 
 JCT  eSn     06:34:03.45   3.7X  15.5 341                                   JCT 
 DLMT eP      06:34:07.16   1.4X  33.3 336 b:6.5+0 1.1 4.4                   DLMT



 Generated 2013 MAR 25 at 06:53 UTC

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