Phase Data

Explanation of Parameters


      4 FEB 2013  ( 35)

     ot  = 05:39:06.47   +/-   2.74              OAXACA, MEXICO                  
     lat =      16.883   +/-   15.9
     lon =     -96.751   +/-   13.7              MAGNITUDE 4.1 (GS)       
     dep =        35.0   +/-    2.0   

     20 km (12 miles) S of Oaxaca, Oaxaca, Mexico (pop 258,000)
     136 km (85 miles) N of Puerto Angel, Oaxaca, Mexico (pop 2,000)
     150 km (93 miles) SSW of Tuxtepec, Oaxaca, Mexico (pop 94,000)
     379 km (235 miles) SE of MEXICO CITY, D.F., Mexico

     nph =   43 of  52    se = 1.35    FE=060                            A   

     error ellipse = (215.0,  0.0, 27.2;305.0,  0.0, 17.1; 43.0, 89.0,  3.0)

 mb = 4.0 ( 38)  ML = 4.5 (  4)  mblg = 3.4 (  7)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 LVIG ePn     05:39:50.96   1.6    2.8   6 g:1.3-1 .70 3.4                   LVIG
 UNM  ePn     05:39:51.30  -5.4    3.3 317 L:1.8+0 1.4 4.4  g:1.9-1 .80 3.6  UNM 
 CCIG ePn     05:40:10.60  -1.3    4.5  97 L:2.4+0 .95 4.9  g:6.1-1 1.0 4.3  CCIG
 TEIG ePn     05:41:06.52  -3.3    8.7  66 g:5.0-2 1.1 3.6                   TEIG
 MNTX ePn     05:42:58.33   0.5   16.7 334 b:1.4+0 1.0 3.0                   MNTX
 Z41A ePn     05:42:59.63   2.0   16.7  12 b:2.3+1 1.0 4.3                   Z41A
 CCAR ePn     05:43:10.82   2.6   17.5  14 b:1.6+1 .98 4.1                   CCAR
 MSTX ePn     05:43:11.61  -0.6   17.8 344 b:6.6+0 1.1 3.7                   MSTX
 MIAR ePn     05:43:12.89   1.2   17.8   9 b:1.2+1 1.0 4.0                   MIAR
 Z45A ePn     05:43:13.05   4.0X  17.6  20 b:1.3+1 .75 4.2                   Z45A
 X43A eP      05:43:18.20   0.4   18.3  16 b:3.0+1 1.1 4.3                   X43A
 W41B eP      05:43:26.10   4.8X  18.6  12 b:6.3+0 .90 3.8                   W41B
 X48A eP      05:43:29.30  -1.7   19.5  25 b:1.2+1 1.0 4.1                   X48A
 HBAR eP      05:43:29.60   0.4   19.4  15 b:7.0+1 1.0 4.8                   HBAR
 BNM  eP      05:43:29.61   0.4   19.3 335                                   BNM 
 LENM eP      05:43:31.47   0.6   19.5 334                                   LENM
 Z50A eP      05:43:31.58   6.4X  19.0  29 b:1.8+1 1.1 4.2                   Z50A
 HHAR eP      05:43:31.72   1.3   19.5   7 b:2.7+0 .90 3.5                   HHAR
 LAZ  eP      05:43:33.99   2.2   19.6 334                                   LAZ 
 TUC  eP      05:43:34.28  -1.2   19.9 323 b:1.5+0 .85 3.3                   TUC 
 WVT  eP      05:43:41.22  -2.9   20.7  21 b:8.0-1 1.1 3.0                   WVT 
 SWET eP      05:43:41.32  -1.9   20.7  26 b:5.4+0 1.0 3.9                   SWET
 V48A eP      05:43:41.91  -2.4   20.8  23 b:2.0+1 1.1 4.4                   V48A
 T42A eP      05:43:43.00  -0.5   20.7  13 b:3.3+0 .70 3.8                   T42A
 X18A eP      05:43:48.66  -0.4   21.2 329 b:1.4+0 .70 3.5                   X18A
 T25A eP      05:43:50.83   0.6   21.3 343 b:4.1+0 1.1 3.7                   T25A
 CCM  eP      05:43:54.25   0.5   21.6  12 b:5.8+0 .80 4.1                   CCM 
 T49A eP      05:44:01.10  -1.3   22.4  24 b:7.6+0 1.0 4.1                   T49A
 WUAZ eP      05:44:05.32   0.3   22.7 328 b:2.8+0 1.0 3.7                   WUAZ
 MVCO eP      05:44:06.80   0.9   22.8 335 b:8.0-1 .70 3.3                   MVCO
      epP     05:44:16.40  depth =   0.9 
 WCI  eP      05:44:08.46  -1.4   23.2  21                                   WCI 
      epP     05:44:15.03  depth =  -4.8X
 P42A eP      05:44:09.95  -1.4   23.3  13 b:7.4+0 .95 4.2                   P42A
 PV01 eP      05:44:14.28  -0.1   23.6 336 b:6.6+0 1.1 4.0                   PV01
 PV12 eP      05:44:16.38  -0.2   23.8 336 b:6.0+0 1.1 4.0                   PV12
      epP     05:44:26.65  depth =  -0.2 
 PV11 eP      05:44:16.70   0.0   23.8 336 b:8.4+0 1.0 4.2                   PV11
 PV04 eP      05:44:16.98  -0.6   23.9 336 b:6.1+0 1.0 4.1                   PV04
      epP     05:44:30.17  depth =   2.4 
 ISCO eP      05:44:18.15  -1.0   24.1 343 b:1.8+0 .95 3.6                   ISCO
      epP     05:44:32.52  depth =   3.2X
 PV23 eP      05:44:18.52   0.0   24.0 336 b:8.2+0 1.1 4.2                   PV23
 SMCO eP      05:44:18.66   0.8   23.9 340                                   SMCO
 MTPU eP      05:44:30.01   2.0   25.1 330 b:2.3+0 .96 3.7                   MTPU
 Q51A eP      05:44:31.80   5.0X  25.0  25 b:1.8+1 .90 4.7                   Q51A
 P51A eP      05:44:35.82   4.4X  25.5  25 b:1.2+1 .90 4.5                   P51A
 O49A eP      05:44:37.37   4.9X  25.6  22 b:2.4+1 .75 4.9                   O49A
 SDV  eP      05:44:42.76   0.4   26.6 104 b:8.4+0 1.0 4.3                   SDV 
 I41A eP      05:44:54.50   3.1X  27.7  11                                   I41A
 F10A epP     05:45:53.82  -0.7   33.6 334                                   F10A
 MVL  ePcP    05:48:10.85  -0.3   29.1  33                                   MVL 



 Generated 2013 FEB  4 at 06:39 UTC

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