Phase Data

Explanation of Parameters


      5 FEB 2013  ( 36)

     ot  = 17:30:49.52   +/-   2.79              ANTOFAGASTA, CHILE              
     lat =     -22.682   +/-    9.1
     lon =     -68.968   +/-   13.0              MAGNITUDE 4.5 (GS)       
     dep =        84.1   +/-    7.9   

     24 km (15 miles) S of Calama, Antofagasta, Chile (pop 126,000)
     143 km (89 miles) ESE of Tocopilla, Antofagasta, Chile (pop 23,000)
     182 km (113 miles) NE of Antofagasta, Antofagasta, Chile
     1204 km (748 miles) N of SANTIAGO, Region Metropolitana, Chile

     nph =   27 of  36    se = 1.37    FE=123                            A   

     error ellipse = (281.0,  6.0, 20.3; 14.0, 26.0, 14.2;178.0, 62.0, 11.1)

 mb = 4.4 (  9)  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
 LVC  ePn     17:31:04.55   2.6    0.1  38                                   LVC 
      eSn     17:31:14.93  S res =   3.8X
 PB04 ePn     17:31:11.81   1.0    1.1 287                                   PB04
      eSn     17:31:28.37  S res =   1.7X
 PB10 ePn     17:31:17.50   0.1    1.7 240                                   PB10
      eSn     17:31:37.73  S res =  -0.7X
 PB01 ePn     17:31:19.41   1.7    1.7 343                                   PB01
      eSn     17:31:41.14  S res =   2.1X
 GO02 ePn     17:31:30.02   1.0    2.5 193                                   GO02
      eSn     17:31:56.85  S res =  -2.4X
 PB11 ePn     17:31:34.93   0.2    3.0 347                                   PB11
 MNMC ePn     17:31:43.03   0.0    3.6 351                                   MNMC
 LCO  ePn     17:32:19.57  -3.2    6.5 194                                   LCO 
      eSn     17:33:29.94  S res =  -5.6X
 LPAZ ePn     17:32:24.10   2.2    6.4   7                                   LPAZ
 GO04 ePn     17:32:34.98  -3.3    7.6 192                                   GO04
      eSn     17:33:56.96  S res =  -6.5X
 ROC1 ePn     17:33:11.31  -4.8   10.4 190                                   ROC1
      eSn     17:35:02.04  S res =  -9.1X
 PEL  ePn     17:33:14.73  -2.8   10.5 188                                   PEL 
 CPUP ePn     17:33:27.33   0.7   11.2 111                                   CPUP
 NNA  ePn     17:33:50.40  -0.9X  13.0 324                                   NNA 
 GO06 ePn     17:34:40.34  -1.5   17.0 187 b:5.0+1 1.4 4.6                   GO06
 PLCA eP      17:34:54.11   0.0   18.0 184 b:2.0+1 1.2 4.2                   PLCA
 SPB  eP      17:35:12.81  -0.9   19.8  97 b:2.3+1 .80 4.6                   SPB 
 BDFB eP      17:35:26.00  -0.3   21.0  74 b:8.8+0 .66 4.2                   BDFB
 PTGA eP      17:35:50.04  -2.1   23.5  23 b:1.4+1 1.2 4.2                   PTGA
 EFI  eP      17:36:51.26  -0.1   30.1 166 b:1.0+2 1.3 5.4                   EFI 
 GO10 eP      17:36:52.66  -1.5   30.5 183 b:1.2+2 1.3 5.4                   GO10
 SNAA eP      17:40:55.16   0.1   61.2 161 b:2.3+1 1.7 5.0                   SNAA
 QSPA eP      17:41:37.40   0.9   67.5 180 b:6.8+0 .60 4.8                   QSPA
 MKAR ePKPdf  17:50:19.75   0.0  146.6  37                                   MKAR
 MK01 ePKPdf  17:50:19.78   0.0  146.6  37                                   MK01
 MAKZ ePKPdf  17:50:19.85   0.4  146.4  37                                   MAKZ
 MK31 ePKPdf  17:50:20.02   0.3  146.6  37                                   MK31
 RES  eS      17:55:41.07   1.7   98.6 353                                   RES 



 Generated 2013 FEB  5 at 18:00 UTC

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