Phase Data

Explanation of Parameters


     20 APR 2013  (110)

     ot  = 08:09:06.00   +/-   0.00         MAULE, CHILE                    
     lat =     -35.014   +/-    0.0
     lon =     -71.783   +/-    0.0              MAGNITUDE 4.1 (GUC)      
     dep =        57.5   +/-    0.0   

     48 km (30 miles) NNW of Talca, Maule, Chile (pop 189,000)
     50 km (31 miles) W of Curico, Maule, Chile (pop 93,000)
     118 km (73 miles) NNE of Cauquenes, Maule, Chile (pop 30,000)
     202 km (125 miles) SSW of SANTIAGO, Region Metropolitana, Chile
 
     ML 4.1 (GUC). Felt (IV) at Chepica, (III) at Curico and (II) at
     Duao, Iloca, Isla de Maipo, Lolol, Pichilemu, Puente Alto, San
     Bernardo and Talca.

     nph =   16 of  16    se = 0.00    FE=136                            held

     error ellipse = (  0.0,  0.0,  0.0;  0.0,  0.0,  0.0;  0.0,  0.0,  0.0)

 mb = 3.9 (  2)  ML = 4.2 ( 10)  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
 GO05 ePn     08:09:15.75   1.0    0.1 272 L:3.0+1 .38 4.2                   GO05
      eSn     08:09:21.50  S res =   0.4 
 PEL  ePn     08:09:38.85   0.3    2.1  27 L:3.6+0 .55 4.2                   PEL 
      eSn     08:10:05.82  S res =   2.5 
 ROC1 ePn     08:09:40.24   0.8    2.1  18 L:7.2+0 .45 4.6                   ROC1
      eSn     08:10:08.63  S res =   3.7 
 GO06 ePn     08:10:16.15   3.4    4.6 177 L:4.0-2 1.8 3.2                   GO06
 GO04 ePn     08:10:17.04  -0.3    4.9  10 L:9.6-1 .43 4.7                   GO04
 PLCA ePn     08:10:33.62   4.2    5.8 171                                   PLCA
 GO03 ePn     08:10:54.09   1.1    7.5  11                                   GO03
 GO07 ePn     08:11:00.93  -1.6    8.2 190                                   GO07
 TRQA ePn     08:11:08.89   3.1    8.4 114                                   TRQA
 PB01 ePn     08:12:31.10   8.7   14.1   9                                   PB01
 PB11 ePn     08:12:40.87   2.1   15.3   8 b:3.9+0 .90 3.6                   PB11
 EFI  eP      08:13:28.55   1.9   19.4 154 b:1.9+1 1.1 4.3                   EFI 
 BANI epP     08:18:35.84   2.6   53.1   2                                   BANI



 Generated 2013 APR 21 at 05:42 UTC

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