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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     26 JUL 2007  (207)

     ot  = 04:12:13.84   +/-   0.32              NEAR COAST OF NORTHERN PERU     
     lat =      -6.142   +/-    5.6
     lon =     -80.226   +/-    9.6              MAGNITUDE 4.3 (GS)       
     dep =        65.9  (depth phases)

     85 km (55 miles) NW of Chiclayo, Peru (pop 469,000)
     110 km (65 miles) SSE of Piura, Peru (pop 308,000)
     680 km (425 miles) SSW of QUITO, Ecuador
     745 km (465 miles) NNW of LIMA, Peru

     nph =   29 of  40    se = 0.87    FE=109                            A   

     error ellipse = ( 67.3,  0.0, 13.4;157.3,  0.0,  5.7;  0.0,  0.0,  0.0)

 mb = 4.3 ( 23)  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
 OTAV ePn     04:13:47.94  -0.5    6.6  16                                   OTAV
      eSn     04:15:04.76  S res =   2.4X
 NNA  ePn     04:13:49.59  -0.1    6.7 150 d:2.3+2     6.4X L:1.6-1 .70 4.4X NNA 
                                           g:1.8-1 1.1 3.9X b:2.8+1 .55 5.1X
 BCIP eP      04:15:46.76   1.9   15.2   1 b:1.1+1 .62 4.2                   BCIP
 LPAZ eP      04:15:51.87   1.9   15.6 131 g:5.4-3 1.0 3.0X b:5.4+0 1.0 3.7  LPAZ
 SDV  ePn     04:16:15.59  -1.0   17.7  33 g:9.1-3 1.0 3.3X b:6.1+0 .75 3.9  SDV 
 LVC  eP      04:16:37.63  -0.4   19.7 147 b:7.2+0 1.0 3.9                   LVC 
 PLCA eP      04:19:04.98   0.5   35.5 167 b:5.2+0 1.0 4.4                   PLCA
 TRQA eP      04:19:06.83  -0.4   35.8 155 b:4.6+0 .99 4.4                   TRQA
 HKT  eP      04:19:32.77  -0.3   38.9 338 b:2.6+0 .95 4.1                   HKT 
 ANMO eP      04:20:45.33   0.5   47.8 331 b:2.6+0 1.1 4.2                   ANMO
      epP     04:21:02.53  depth =  68.1 
 TUC  eP      04:20:46.98   0.1   48.0 325 b:1.5+0 .80 4.0                   TUC 
 SDCO eP      04:20:59.69   0.7   49.6 334 b:1.7+0 .70 4.1                   SDCO
      epP     04:21:16.90  depth =  67.6 
 ECSD eP      04:21:13.73  -1.4   51.8 345 b:2.5+0 .73 4.3                   ECSD
      epP     04:21:31.83  depth =  71.3 
 RSSD eP      04:21:34.25  -0.5   54.4 339 b:1.6+0 .57 4.2                   RSSD
 DUG  eP      04:21:39.41   0.6   55.0 330 b:2.8+0 .84 4.3                   DUG 
 BW06 eP      04:21:42.13  -0.3   55.5 334 b:6.4-1 .63 3.8                   BW06
 AGMN eP      04:21:44.27  -0.8   55.9 347 b:3.4+0 .60 4.6                   AGMN
      epP     04:21:59.86  depth =  58.4 
 ELK  eP      04:21:51.42   0.7   56.7 329 b:2.2+0 .80 4.3                   ELK 
 RRI2 eP      04:21:51.62   0.3   56.7 333 b:2.7+0 .68 4.4                   RRI2
      epP     04:22:09.04  depth =  66.8 
 LOHW eP      04:21:51.97   1.5   56.6 334 b:1.3+0 .70 4.1                   LOHW
 ULM  eP      04:21:57.70  -0.4   57.8 348 b:3.2+0 .76 4.5                   ULM 
 HLID eP      04:22:02.82   0.4   58.3 331 b:2.9+0 .83 4.4                   HLID
      epP     04:22:20.43  depth =  67.3 
 BOZ  eP      04:22:04.40  -0.4   58.7 335 b:2.2+0 1.0 4.2                   BOZ 
      epP     04:22:21.74  depth =  66.0 
 DBIC eP      04:23:56.88   0.7   76.3  82 b:3.1+1 1.4 5.0                   DBIC
 SNAA eP      04:24:16.72  -0.4   80.2 162 b:3.4+0 .79 4.3                   SNAA
      epP     04:24:33.33  depth =  59.4 
 INK  eP      04:24:30.80  -0.6   83.0 343                                   INK 
      epP     04:24:49.54  depth =  68.0 
 TOA0 eP      04:24:34.88  -1.0   83.6  76                                   TOA0
 FITZ ePKPdf  04:31:43.78  -0.7  144.9 226                                   FITZ
      epPKPdf 04:32:01.03  -2.5X
 MBWA ePKPbc  04:31:47.82  -0.9  146.5 215                                   MBWA



 Generated 2007 JUL 26 at 05:25 UTC

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

 


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