Phase Data

Explanation of Parameters


      3 FEB 2013  ( 34)

     ot  = 20:54:43.81   +/-   1.70              OFFSHORE VALPARAISO, CHILE      
     lat =     -32.377   +/-    9.2
     lon =     -71.598   +/-    5.0              MAGNITUDE 4.7 (GS)       
     dep =        37.9   +/-    7.9   

     74 km (46 miles) N of Valparaiso, Valparaiso, Chile (pop 263,000)
     92 km (57 miles) SSW of Illapel, Coquimbo, Chile (pop 21,000)
     107 km (66 miles) WNW of Los Andes, Valparaiso, Chile (pop 55,000)
     147 km (92 miles) NW of SANTIAGO, Region Metropolitana, Chile (pop 4,656,00

     nph =   31 of  31    se = 0.84    FE=135                            A   

     error ellipse = (172.0, 31.0, 15.3;338.0, 57.0, 10.6; 78.0,  6.0,  7.3)

 mb = 4.7 ( 12)  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 ePn     20:54:58.78   0.3    0.8 141                                   ROC1
      eSn     20:55:10.00  S res =   1.0 
 PEL  ePn     20:55:03.37   0.7    1.1 135                                   PEL 
 GO04 ePn     20:55:20.33   0.8    2.3  18                                   GO04
 LCO  ePn     20:55:35.31   0.1    3.4  13                                   LCO 
 GO03 ePn     20:55:54.99  -0.2    4.9  14                                   GO03
 GO06 ePn     20:56:25.51  -1.1    7.2 179                                   GO06
 GO02 ePn     20:56:28.20  -1.4    7.4  14                                   GO02
 PLCA ePn     20:56:43.25   0.4    8.4 175                                   PLCA
 LPAZ ePn     20:58:31.27   0.4   16.3  12 b:1.6+1 1.5 3.9                   LPAZ
 TX31 eP      21:05:42.40  -0.1   68.5 330                                   TX31
      eP      21:05:42.51   0.1 
 WVT  eP      21:05:49.52  -0.8   69.8 346 b:1.3+1 .70 5.1                   WVT 
 W39A eP      21:05:52.63  -1.0   70.4 341 b:8.7+0 .75 4.9                   W39A
 CCM  eP      21:06:05.61  -0.4   72.4 344 b:7.7+0 .75 4.8                   CCM 
 ACSO eP      21:06:08.80  -0.6   73.0 351 b:1.5+1 .65 5.1                   ACSO
 SDCO eP      21:06:30.87   0.3   76.6 333 b:6.9+0 1.7 4.4                   SDCO
 ISCO eP      21:06:39.72  -1.1   78.4 334 b:2.8+0 .85 4.3                   ISCO
 ECSD eP      21:06:44.05  -0.1   79.1 342 b:1.2+1 .80 4.9                   ECSD
 DAC  eP      21:06:52.72  -0.6   80.7 324 b:3.0+0 .80 4.3                   DAC 
 HWUT eP      21:07:01.07  -0.4   82.3 331 b:2.3+0 .65 4.4                   HWUT
 NV01 eP      21:07:04.62   0.6   82.8 325                                   NV01
 TOA0 eP      21:07:05.44  -1.6   83.3  70                                   TOA0
 MCMT eP      21:07:18.76   0.9   85.5 332                                   MCMT
 J08A eP      21:07:24.70   1.1   86.7 328 b:5.4+0 .60 4.9                   J08A
 NIL  ePKPbc  21:14:31.46  -0.4  150.6  79                                   NIL 
 ARSB ePKPbc  21:14:31.95   0.7  150.4  63                                   ARSB
 KURK ePKPbc  21:14:33.33   0.2  151.4  42                                   KURK
 AAK  ePKPbc  21:14:34.16   0.6  151.4  60                                   AAK 
 ZALV ePKPbc  21:14:35.27  -0.5  152.7  31                                   ZALV
 ZAA0 ePKPbc  21:14:35.80   0.0  152.7  31                                   ZAA0



 Generated 2013 FEB  3 at 22:48 UTC

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