Phase Data

Explanation of Parameters


     18 FEB 2013  ( 49)

     ot  = 16:19:48.21   +/-   0.88              SOUTHERN PERU                   
     lat =     -15.658   +/-    7.1
     lon =     -72.218   +/-   10.6              MAGNITUDE 4.5 (GS)       
     dep =       111.2   +/-    9.8   

     110 km (68 miles) NW of Arequipa, Peru (pop 710,000)
     218 km (136 miles) NW of Moquegua, Peru
     224 km (139 miles) W of Juliaca, Peru
     657 km (408 miles) SE of LIMA, Peru

     nph =   25 of  26    se = 1.32    FE=117                            B   

     error ellipse = ( 97.5, 38.8, 17.2;226.9, 38.3, 15.9;342.0, 28.2,  7.8)

 mb = 4.5 (  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
 LPAZ ePn     16:20:50.87   2.9    4.0 100                                   LPAZ
 MNMC ePn     16:20:51.77   0.3    4.3 144 L:4.5+0 .25 5.3X                  MNMC
 PB11 ePn     16:20:57.46  -0.5    4.8 149 L:2.1+0 .45 5.1X                  PB11
 PB01 ePn     16:21:12.63  -1.4    6.0 155 L:1.1+0 .80 5.1X                  PB01
 NNA  ePn     16:21:13.13   1.3    5.8 309 L:5.4-1 1.0 4.7X                  NNA 
 PB04 ePn     16:21:25.77  -1.5    6.9 164 L:1.6+0 .80 5.4X                  PB04
 LVC  ePn     16:21:36.22  -0.2    7.6 156 L:7.5-1 1.3 5.2X                  LVC 
 PB10 ePn     16:21:39.83  -1.5    8.0 169 L:5.4-1 1.1 5.1X                  PB10
 GO02 ePn     16:22:04.65  -1.4    9.8 166                                   GO02
 GO03 ePn     16:22:36.15   0.2   12.0 172                                   GO03
 GO04 ePn     16:23:09.36   0.9   14.5 175                                   GO04
 ROC1 eP      16:23:42.94   0.4   17.3 177 b:3.1+1 1.2 4.4                   ROC1
 CPUP eP      16:23:45.43   0.9   17.5 130                                   CPUP
 PTGA eP      16:24:02.04  -0.8   19.1  40 b:2.6+1 1.2 4.4                   PTGA
 BDFB eP      16:24:46.18  -0.4   23.3  93 b:1.6+1 1.5 4.2                   BDFB
 GO06 eP      16:24:53.46   2.2   23.8 179 b:3.8+1 .90 4.8                   GO06
 SDV  eP      16:24:57.30   0.4   24.4   4 b:9.6+0 1.0 4.2                   SDV 
 PLCA eP      16:25:03.60   1.6   25.0 177 b:1.7+1 .90 4.5                   PLCA
 HHAR eP      16:29:10.66  -1.7   55.6 339 b:6.2+1 1.7 5.3                   HHAR
 WMOK eP      16:29:15.39  -0.8   56.1 334                                   WMOK
      ePcP    16:30:12.57  -0.3X
 X48A ePcP    16:29:57.00   0.7   51.8 344                                   X48A
 QSPA eP      16:31:14.87   0.4   74.5 180 b:1.2+1 1.1 4.6                   QSPA
 TOA0 eP      16:31:36.01  -1.7   78.5  73                                   TOA0
 EPYK eP      16:32:55.12  -0.4   94.5 339 b:2.5+1 1.5 5.4                   EPYK
 WB2  ePKPdf  16:38:57.20   0.1  136.0 217                                   WB2 



 Generated 2013 FEB 18 at 17:26 UTC

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