Phase Data

Explanation of Parameters


      3 APR 2013  ( 93)

     ot  = 21:09:28.14   +/-   2.07              TARAPACA, CHILE                 
     lat =     -18.356   +/-   10.2
     lon =     -69.378   +/-   19.9              MAGNITUDE 4.7 (GS)       
     dep =       104.5   +/-    5.0   

     100 km (62 miles) ESE of Tacna, Peru (pop 215,000)
     102 km (63 miles) E of Arica, Tarapaca, Chile (pop 175,000)
     209 km (130 miles) SE of Moquegua, Peru
     1079 km (670 miles) SE of LIMA, Peru

     nph =   21 of  22    se = 1.02    FE=123                            A   

     error ellipse = (274.0,  0.0, 30.8;  4.0,  7.0, 15.7;178.0, 82.0,  7.3)

 mb = 4.6 ( 12)  ML = 4.4 (  4)  mblg = 0.0 (  0)  md = 4.7 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 GO01 ePn     21:09:54.05   1.1    1.3 172 d:3.4+2     4.7  L:1.1+1 .25 4.5  GO01
 LPAZ ePn     21:10:10.50   4.1    2.4  30                                   LPAZ
      eSn     21:10:23.84  S res = -11.7 
 LVC  ePn     21:10:31.72   0.5    4.3 174 L:7.8-1 .91 4.4                   LVC 
      eSn     21:11:04.28  S res = -15.9 
 GO02 ePn     21:11:03.07  -2.3    6.8 182                                   GO02
      eSn     21:12:13.76  S res =  -7.5 
 PTGA eP      21:13:49.44  -1.1   19.8  29 b:2.7+1 .55 4.8                   PTGA
 BDFB eP      21:14:00.16   0.9   20.6  86 b:1.8+1 .54 4.6                   BDFB
 GO06 eP      21:14:06.00   0.2   21.2 185 b:7.6+0 .75 4.1                   GO06
 PLCA eP      21:14:16.96  -0.3   22.3 182 b:1.5+1 1.0 4.3                   PLCA
 PBMO eP      21:19:12.09  -0.1   58.3 340 b:1.3+1 .55 5.2                   PBMO
 FVM  eP      21:19:19.20  -0.6   59.4 341 b:1.2+1 .70 5.1                   FVM 
 CCM  eP      21:19:22.14   0.1   59.8 340 b:6.7+0 .55 5.0                   CCM 
 319A eP      21:19:41.15  -0.1   62.5 322 b:3.8+0 .85 4.4                   319A
 CCUT eP      21:20:25.43   0.8   69.3 324 b:2.3+0 .88 4.0                   CCUT
 HLID eP      21:20:53.10  -0.4   74.2 328 b:9.0-1 .75 3.7                   HLID
 TOA0 eP      21:21:07.80  -0.8   76.7  71 b:1.3+1 .75 4.8                   TOA0
 ES06 eP      21:21:47.45   0.8   83.9  45                                   ES06
 YKB5 eP      21:22:06.61   0.1   88.1 341                                   YKB5
      epP     21:22:35.39  depth =   0.2 
 W13A eS      21:29:03.47  -3.0X  67.9 322                                   W13A



 Generated 2013 APR  3 at 21:38 UTC

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