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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     11 APR 2009  (101)

     ot  = 08:44:25.98   +/-   0.00        PUERTO RICO REGION              
     lat =      18.565   +/-    0.0
     lon =     -66.455   +/-    0.0                                       
     dep =         5.8   +/-    0.0   

     30 km (20 miles) ENE of Arecibo, Puerto Rico (pop 49,000)
     35 km (20 miles) WNW of SAN JUAN, Puerto Rico (pop 421,000)
     65 km (40 miles) NNE of Ponce, Puerto Rico (pop 155,000)
     160 km (100 miles) W of CHARLOTTE AMALIE, US Virgin Islands (pop 11,000)
 
     MD 2.7 (RSPR).

     nph =    7 of  15    se = 0.00    FE=090                            held

     error ellipse = (  0.0,  0.0,  0.0;  0.0,  0.0,  0.0;  0.0,  0.0,  0.0)

 mb = 0.0 (  0)  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
 AOPR ePd     08:44:33.21   0.3    0.4 233                                   AOPR
      eS      08:44:39.00  S res =   1.4X
 CELP ePd     08:44:35.92   0.3    0.5 194                                   CELP
      eS      08:44:43.15  S res =   1.0X
 OBIP ePc     08:44:36.46   0.1    0.5 195                                   OBIP
      eS      08:44:44.43  S res =   1.1X
 CBYP ePd     08:44:37.86  -0.4    0.6 117                                   CBYP
      eS      08:44:47.37  S res =   0.8X
 HUMP ePd     08:44:39.06  -0.6    0.7 126                                   HUMP
      eS      08:44:49.61  S res =   0.7X
 CRPR ePd     08:44:40.98  -1.0    0.8 228                                   CRPR
      eS      08:44:52.60  S res =  -0.2X
 MTP  ePd     08:44:43.10  -1.6    1.0 118                                   MTP 
      eS      08:44:56.14  S res =  -1.2X
      eS      08:44:56.45  S res =  -0.9X



 Generated 2009 APR 13 at 12:16 UTC

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


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