Phase Data

Explanation of Parameters


      7 FEB 2013  ( 38)

     ot  = 13:07:11.25   +/-   2.08              NEAR COAST OF NICARAGUA         
     lat =      12.814   +/-   10.6
     lon =     -87.771   +/-   10.8              MAGNITUDE 4.5 (GS)       
     dep =        98.2   +/-   18.2   

     71 km (44 miles) WNW of Chinandega, Nicaragua (pop 126,000)
     82 km (51 miles) SW of Choluteca, Honduras (pop 75,000)
     179 km (111 miles) WNW of MANAGUA, Nicaragua
     1419 km (881 miles) ESE of MEXICO CITY, D.F., Mexico
 
     MD 4.1 (SNET). Felt (II) at Usulutan.

     nph =   18 of  18    se = 1.02    FE=074                            B   

     error ellipse = ( 71.0, 59.0, 32.1;165.0,  2.0, 16.0;256.0, 30.0,  5.0)

 mb = 4.5 (  8)  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
 TGUH ePn     13:07:35.23  -0.2    1.3  21                                   TGUH
      eSn     13:07:57.37  S res =   3.6 
 ESTN ePn     13:07:36.64   0.4    1.4  78                                   ESTN
      eSn     13:07:59.72  S res =   4.5 
 BOAB ePn     13:07:44.89   0.0    2.1 100                                   BOAB
      eSn     13:08:05.14  S res =  -5.5 
 JTS  ePn     13:08:07.06   0.3    3.7 132                                   JTS 
 OTAV ePn     13:10:45.66   0.2   15.5 143 b:2.2+0 .80 3.5                   OTAV
 250A eP      13:11:25.77  -0.8   19.1   4 b:6.2+1 .45 5.2                   250A
 TX31 eP      13:11:56.87  -2.0   22.1 321                                   TX31
      eP      13:11:57.22  -1.5 
 MIAR eP      13:12:01.26   1.0   22.3 347 b:4.6+0 .80 3.9                   MIAR
 MSTX eP      13:12:25.87  -1.1   25.1 330 b:7.7+0 .80 4.2                   MSTX
 O20A eP      13:13:33.95  -0.1   32.6 330 b:1.4+1 1.5 4.5                   O20A
 REDW eP      13:14:06.26   0.0   36.4 331 b:7.6+0 .50 4.9                   REDW
 LOHW eP      13:14:06.42  -0.4   36.4 332 b:7.8+0 1.5 4.4                   LOHW
 SNOW eP      13:14:06.68   0.2   36.4 331 b:7.7+0 .60 4.8                   SNOW
 MCMT eP      13:14:24.38   0.9   38.4 331                                   MCMT



 Generated 2013 FEB  9 at 20:15 UTC

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