Phase Data

Explanation of Parameters


     30 APR 2013  (120)

     ot  = 18:29:07.95   +/-   1.71              ANTOFAGASTA, CHILE              
     lat =     -22.829   +/-   10.0
     lon =     -69.190   +/-    7.5              MAGNITUDE 4.3 (GS)       
     dep =        84.0   +/-   13.7   

     48 km (30 miles) SSW of Calama, Antofagasta, Chile (pop 126,000)
     133 km (82 miles) SE of Tocopilla, Antofagasta, Chile (pop 23,000)
     154 km (95 miles) NE of Antofagasta, Antofagasta, Chile (pop 285,000)
     1185 km (736 miles) N of SANTIAGO, Region Metropolitana, Chile

     nph =   19 of  19    se = 0.85    FE=123                            A   

     error ellipse = ( 52.0, 60.0, 23.2;179.0, 18.0, 14.3;277.0, 22.0,  7.7)

 mb = 4.1 (  3)  ML = 4.3 ( 18)  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     18:29:21.54   0.2    0.3  50 L:2.5+1 .20 4.3                   LVC 
      eSn     18:29:31.53  S res =   0.3 
 PB04 ePn     18:29:27.56  -0.1    1.0 299 L:1.7+1 .25 4.5                   PB04
      eSn     18:29:43.38  S res =   1.1 
 PB10 ePn     18:29:32.35  -0.2    1.4 241 L:4.7+0 .40 4.1                   PB10
 PB01 ePn     18:29:38.17   0.8    1.8 351 L:5.9+0 .30 4.4                   PB01
 GO02 ePn     18:29:44.77  -0.2    2.3 189 L:2.9+0 .30 4.3                   GO02
 PB11 ePn     18:29:54.18  -0.5    3.1 352 L:1.6+0 .50 4.3                   PB11
 GO01 ePn     18:29:55.76   0.0    3.1 360 L:1.6+0 .15 4.3                   GO01
 MNMC ePn     18:30:02.58  -0.5    3.7 354 L:2.0+0 .45 4.6                   MNMC
 GO03 ePn     18:30:17.24  -1.2    4.8 191 L:5.1-1 .60 4.4                   GO03
 LCO  ePn     18:30:40.25   1.7    6.3 192                                   LCO 
 LPAZ ePn     18:30:42.77   0.1    6.6   9                                   LPAZ
 GO04 ePn     18:30:50.84  -3.4    7.5 191                                   GO04
 ROC1 ePn     18:31:31.50  -0.7   10.2 189                                   ROC1
 CPUP ePn     18:31:47.54   0.6   11.3 110                                   CPUP
 TRQA ePn     18:32:53.85   1.0   16.4 160 b:1.7+1 1.4 4.1                   TRQA
 GO06 ePn     18:32:59.08   0.9   16.8 186 b:1.1+1 1.2 3.9                   GO06
 PLCA eP      18:33:09.86  -0.9   17.9 183 b:3.0+1 1.8 4.2                   PLCA



 Generated 2013 MAY  1 at 16:08 UTC

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