Phase Data

Explanation of Parameters


      2 FEB 2013  ( 33)

     ot  = 03:48:06.42   +/-   1.44              OFFSHORE VALPARAISO, CHILE      
     lat =     -32.562   +/-    9.4
     lon =     -71.604   +/-   10.4              MAGNITUDE 4.0 (GS)       
     dep =        30.2   +/-    6.9   

     54 km (33 miles) N of Valparaiso, Valparaiso, Chile (pop 263,000)
     99 km (62 miles) WNW of Los Andes, Valparaiso, Chile (pop 55,000)
     111 km (69 miles) SSW of Illapel, Coquimbo, Chile (pop 21,000)
     132 km (82 miles) NW of SANTIAGO, Region Metropolitana, Chile (pop 4,656,00
 
     Felt at La Calera, Limache and Vina del Mar

     nph =   14 of  14    se = 0.71    FE=135                            A   

     error ellipse = (233.0, 18.0, 20.3;339.0, 38.0, 11.5;123.0, 45.0,  5.8)

 mb = 4.0 (  2)  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
 ROC1 ePg     03:48:19.34  -0.1    0.7 130                                   ROC1
      eSn     03:48:27.28  S res =  -1.8 
 PEL  ePn     03:48:24.51   0.4    1.0 127                                   PEL 
      eSn     03:48:38.68  S res =   1.8 
 GO05 ePn     03:48:43.66  -0.8    2.5 186                                   GO05
 GO04 ePn     03:48:45.51   0.5    2.5  16                                   GO04
 LCO  ePn     03:49:00.83   0.1    3.6  13                                   LCO 
 GO03 ePn     03:49:20.74   0.0    5.1  14                                   GO03
 GO06 ePn     03:49:47.21   0.1    7.0 179                                   GO06
 GO02 ePn     03:49:52.73  -2.4    7.6  14                                   GO02
 PLCA ePn     03:50:04.19   0.8    8.2 174                                   PLCA
 LVC  ePn     03:50:28.29  -2.7   10.2  14                                   LVC 
 LPAZ ePn     03:51:56.37   0.0   16.5  12 b:5.0+0 1.0 3.6                   LPAZ
 BDFB eP      03:53:47.79  -0.3   27.2  57                                   BDFB



 Generated 2013 FEB  2 at 07:59 UTC

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