Phase Data

Explanation of Parameters


      4 FEB 2013  ( 35)

     ot  = 05:10:32.16   +/-   1.40              OFFSHORE CHIAPAS, MEXICO        
     lat =      15.320   +/-   18.9
     lon =     -94.031   +/-   14.0              MAGNITUDE 4.3 (GS)       
     dep =        72.8   +/-   10.3   

     97 km (60 miles) SSW of Tonala, Chiapas, Mexico (pop 31,000)
     156 km (97 miles) SE of Salina Cruz, Oaxaca, Mexico (pop 71,000)
     384 km (239 miles) WNW of GUATEMALA, Guatemala
     709 km (440 miles) SE of MEXICO CITY, D.F., Mexico

     nph =  113 of 114    se = 0.69    FE=066                            A   

     error ellipse = (204.0, 18.0, 31.9;111.0,  7.0, 18.7;359.0, 69.0, 12.4)

 mb = 4.3 ( 99)  ML = 4.3 (  2)  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
 CCIG ePn     05:11:04.83   0.0    2.1  62 L:5.5+0 .60 4.4                   CCIG
 LVIG ePn     05:11:43.32  -0.5    4.9 333                                   LVIG
 MYIG ePn     05:12:12.75   1.6    6.9  35                                   MYIG
 TEIG ePn     05:12:17.92   1.3    7.3  48                                   TEIG
 833A ePn     05:13:47.34   2.0   13.9 340                                   833A
 435B ePn     05:14:10.10   0.7   15.7 349 b:1.8+1 .65 4.4                   435B
 JCT  ePn     05:14:10.96  -1.8   16.0 342 b:9.6+0 .90 3.9                   JCT 
 TX31 ePn     05:14:18.59  -1.3   16.5 329                                   TX31
      ePn     05:14:18.85  -0.8 
 WHTX ePn     05:14:23.43  -0.4   16.9 350 b:1.5+1 .70 4.3                   WHTX
 ABTX eP      05:14:36.65  -0.1   18.0 345 b:1.2+1 .70 4.2                   ABTX
 MIAR eP      05:14:49.75   0.1   19.1   1 b:9.4+0 .70 4.1                   MIAR
 MNTX eP      05:14:51.90   0.4   19.3 330 b:3.8+0 .75 3.7                   MNTX
 UALR eP      05:14:52.87   0.2   19.4   4 b:1.1+1 .65 4.3                   UALR
 Z50A eP      05:14:53.46   2.0   19.3  21 b:2.2+1 1.0 4.3                   Z50A
 OXF  eP      05:14:54.30   0.2   19.6  12 b:1.3+1 1.0 4.2                   OXF 
 WMOK eP      05:14:56.18  -0.6   19.8 348 b:4.2+0 .80 3.8                   WMOK
 W39A eP      05:14:56.97   0.3   19.8   1 b:7.8+0 .80 4.1                   W39A
 W41B eP      05:14:57.44   0.4   19.8   4 b:6.6+0 1.1 3.8                   W41B
 MSTX eP      05:15:00.44  -0.5   20.2 339 b:1.4+1 .75 4.4                   MSTX
 GOGA eP      05:15:04.96   1.8   20.4  26 b:6.1+0 1.0 3.9                   GOGA
 TUL1 eP      05:15:05.10   0.1   20.6 356 b:1.3+1 .75 4.3                   TUL1
 AMTX eP      05:15:06.23   0.1   20.7 342 b:2.7+1 .75 4.7                   AMTX
 HHAR eP      05:15:08.40   0.0   20.9   0 b:1.6+1 .64 4.5                   HHAR
 W50A eP      05:15:13.63   0.8   21.3  20 b:9.9+0 .95 4.2                   W50A
 WVT  eP      05:15:14.44  -0.1   21.4  14 b:6.1+0 .95 4.0                   WVT 
 T42A eP      05:15:18.62   0.6   21.8   6 b:5.0+0 .85 4.0                   T42A
 LENM eP      05:15:20.12  -1.6   22.1 330                                   LENM
 BNM  eP      05:15:20.24   0.4   21.9 331                                   BNM 
 LAZ  eP      05:15:24.79   2.2   22.2 331                                   LAZ 
 ANMO eP      05:15:25.38  -0.6   22.5 333 b:2.5+0 .75 3.7                   ANMO
 CCM  eP      05:15:28.56   0.0   22.8   6 b:1.1+1 .75 4.4                   CCM 
 SDV  eP      05:15:37.11  -1.1   23.7 103 b:4.3+0 .70 4.0                   SDV 
 T25A eP      05:15:38.00   1.2   23.6 339 b:1.9+1 1.0 4.5                   T25A
 KSU1 eP      05:15:38.08  -0.1   23.8 355 b:1.0+1 .85 4.3                   KSU1
 OLIL eP      05:15:38.58  -0.6   23.9  12 b:1.5+1 .75 4.5                   OLIL
 WCI  eP      05:15:39.00   0.6   23.8  15 b:1.4+1 .90 4.4                   WCI 
 X18A eP      05:15:40.37   0.9   23.9 326 b:9.3+0 .85 4.3                   X18A
 P42A eP      05:15:43.13  -0.5   24.4   7 b:1.6+1 .75 4.5                   P42A
 SDCO eP      05:15:45.55   0.2   24.5 338 b:6.4+0 1.0 4.0                   SDCO
 BLO  eP      05:15:46.16   0.1   24.7  14 b:1.1+1 .75 4.4                   BLO 
 S22A eP      05:15:50.59   0.6   25.0 336 b:2.8+0 1.0 3.6                   S22A
 MVCO eP      05:15:52.10  -0.2   25.3 332 b:8.8+0 1.0 4.2                   MVCO
 PV01 eP      05:15:57.07  -2.4   26.1 333 b:1.1+1 1.0 4.3                   PV01
 O49A eP      05:15:57.08  -2.8   26.2  17 b:1.1+1 .85 4.4                   O49A
 PV15 eP      05:16:00.24  -0.5   26.2 334 b:7.9+0 .98 4.2                   PV15
 PV13 eP      05:16:00.43  -0.2   26.2 333 b:6.9+0 .88 4.2                   PV13
 PV02 eP      05:16:00.68   0.0   26.2 333 b:8.0+0 1.1 4.1                   PV02
 PV03 eP      05:16:01.94   0.5   26.3 333 b:6.8+0 .92 4.2                   PV03
 PV12 eP      05:16:02.17   0.4   26.4 333 b:1.9+1 1.0 4.6                   PV12
 PV11 eP      05:16:02.27   0.4   26.4 333 b:7.4+0 .98 4.2                   PV11
 PV17 eP      05:16:02.28   0.2   26.4 333 b:8.6+0 1.0 4.2                   PV17
 SCIA eP      05:16:02.40  -0.4   26.5   1 b:3.3+1 .70 5.0                   SCIA
 PV16 eP      05:16:02.48   0.3   26.4 333 b:6.4+0 .98 4.1                   PV16
 ISCO eP      05:16:02.84   0.5   26.4 340 b:3.7+0 .85 4.0                   ISCO
 PV07 eP      05:16:02.88   0.8   26.4 334 b:1.3+1 .94 4.4                   PV07
 PV14 eP      05:16:03.24   0.2   26.5 333 b:6.0+0 .98 4.1                   PV14
 PV04 eP      05:16:03.28   0.6   26.5 333 b:1.1+1 .88 4.4                   PV04
 PV23 eP      05:16:04.03   0.4   26.6 333 b:1.1+1 .86 4.4                   PV23
 L40A eP      05:16:04.27  -0.8   26.8   5 b:2.3+1 .80 4.8                   L40A
 PV09 eP      05:16:04.68   0.2   26.6 333                                   PV09
 PV21 eP      05:16:05.18   0.9   26.6 333 b:6.3+0 .88 4.2                   PV21
 JFWS eP      05:16:12.65  -0.7   27.7   6 b:1.6+1 .70 4.7                   JFWS
 MTPU eP      05:16:15.21   0.9   27.7 328 b:4.4+0 1.1 4.0                   MTPU
 P17A eP      05:16:18.15   0.2   28.2 332 b:6.8+0 .86 4.3                   P17A
 TMUT eP      05:16:19.48   0.8   28.2 331 b:4.3+0 1.0 4.0                   TMUT
 ECSD eP      05:16:19.72   0.0   28.4 356 b:3.7+0 .80 4.1                   ECSD
 I39A eP      05:16:20.10  -0.7   28.5   4 b:2.1+1 .75 4.8                   I39A
 MPU  eP      05:16:25.63   0.2   29.0 331 b:3.4+0 1.0 3.9                   MPU 
 K22A eP      05:16:28.70   1.0   29.3 341 b:8.6+0 1.1 4.3                   K22A
 SPMN eP      05:16:31.65  -0.7   29.8   2 b:2.1+1 .65 5.0                   SPMN
 TCUT eP      05:16:33.26   0.8   29.8 333 b:2.2+1 .76 4.9                   TCUT
 PDAR eP      05:16:36.74  -1.2   30.4 337                                   PDAR
 PD31 eP      05:16:37.72  -0.3   30.4 337                                   PD31
 BGU  eP      05:16:37.78   0.3   30.4 331 b:1.9+0 .94 3.8                   BGU 
 HVU  eP      05:16:42.88   0.5   30.9 332 b:8.0+0 .72 4.5                   HVU 
 E38A eP      05:16:44.45  -0.5   31.3   3 b:9.8+0 .80 4.6                   E38A
 NV11 eP      05:16:46.27   0.4   31.3 322 b:3.0-1 .90 3.1                   NV11
 ELK  eP      05:16:46.40   0.4   31.3 328 b:2.5+0 .80 4.0                   ELK 
 NV01 eP      05:16:46.62  -0.1   31.4 322                                   NV01
 REDW eP      05:16:46.81   0.0   31.4 336 b:7.1+0 .70 4.6                   REDW
 TPAW eP      05:16:47.34  -0.8   31.6 336 b:5.0+0 .85 4.3                   TPAW
 SNOW eP      05:16:47.65   0.4   31.5 336 b:1.7+1 .70 4.9                   SNOW
 LOHW eP      05:16:48.19   0.4   31.5 337 b:6.1+0 .80 4.4                   LOHW
 FXWY eP      05:16:49.39  -0.1   31.7 336 b:2.5+0 1.0 4.0                   FXWY
 MOOW eP      05:16:49.52   0.2   31.7 337 b:3.8+0 .85 4.2                   MOOW
 IMW  eP      05:16:51.63   0.5   31.9 337 b:3.7+0 .90 4.2                   IMW 
 FLWY eP      05:16:52.14   0.5   32.0 337 b:3.8+0 .75 4.3                   FLWY
 RLMT eP      05:16:55.07   0.0   32.4 340 b:3.2+0 .75 4.2                   RLMT
 YMR  eP      05:16:57.88   1.0   32.6 337 b:4.7+0 .70 4.4                   YMR 
 HLID eP      05:17:01.05  -0.2   33.1 332 b:4.3+0 .90 4.3                   HLID
 MCMT eP      05:17:05.69   1.3   33.5 335                                   MCMT
 DLMT eP      05:17:08.26   1.0   33.8 336 b:6.9+0 .90 4.6                   DLMT
 MDPB esP     05:17:09.81  -2.1   31.4 320                                   MDPB
      eS      05:21:52.94  S res =   3.9X
 ORV  eP      05:17:10.14   0.6   34.1 321 b:1.0+0 .95 3.7                   ORV 
 WVOR eP      05:17:11.55  -0.3   34.3 327 b:4.4+0 1.0 4.3                   WVOR
 ULM  eP      05:17:14.87  -1.5   34.9 358 b:8.9+0 1.1 4.6                   ULM 
 MOD  eP      05:17:15.94  -0.6   34.8 325 b:2.9+0 .75 4.3                   MOD 
 J08A eP      05:17:16.50  -0.2   34.9 328 b:7.6+0 .75 4.7                   J08A
 EGMT eP      05:17:19.02   0.5   35.1 342 b:2.6+0 1.0 4.1                   EGMT
 F10A eP      05:17:27.97  -0.2   36.2 332                                   F10A
 H04A eP      05:17:40.52  -0.4   37.7 327 b:8.1+0 .90 4.7                   H04A
 LON  eP      05:17:50.97  -0.2   39.0 329 b:3.6+0 .80 4.3                   LON 
 FCC  eP      05:18:26.70  -0.4   43.4 360 b:3.0+0 .70 4.2                   FCC 
 YKW3 eP      05:19:13.68  -0.4   49.4 348 b:5.8+0 1.1 4.5                   YKW3
 BOZ  ePcP    05:19:45.77   1.1   33.7 338                                   BOZ 
 INK  eP      05:20:21.10  -0.2   58.6 344 b:3.9+0 .80 4.6                   INK 
 IL1  eP      05:20:35.64  -1.1   60.9 337                                   IL1 
 PRP  eP      05:20:35.68  -0.3   60.7 338 b:3.6+0 .80 4.6                   PRP 
 ILB  eP      05:20:35.90  -0.9   60.9 337                                   ILB 
 RND  eP      05:20:37.60  -0.3   61.0 335 b:4.4+0 .96 4.6                   RND 
 MLY  eP      05:20:46.98  -0.5   62.5 336 b:8.1+0 .92 4.8                   MLY 
 ES19 eP      05:22:36.52   0.0   80.5  51                                   ES19



 Generated 2013 FEB  4 at 05:38 UTC

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