Phase Data

Explanation of Parameters


     22 JAN 2013  ( 22)

     ot  = 21:29:33.90   +/-   1.58              COSTA RICA                      
     lat =       9.488   +/-    8.5
     lon =     -84.034   +/-   10.8              MAGNITUDE 4.2 (GS)       
     dep =        10.0   +/-    3.2   

     49 km (31 miles) S of SAN JOSE, Costa Rica (pop 336,000)
     102 km (64 miles) ESE of Puntarenas, Costa Rica (pop 36,000)
     123 km (77 miles) WSW of Limon, Costa Rica (pop 61,000)
     134 km (83 miles) NW of Golfito, Costa Rica (pop 10,000)

     nph =   11 of  11    se = 0.78    FE=078                            A   

     error ellipse = (242.0,  0.0, 18.0;152.0,  2.0, 11.6;340.0, 87.0,  4.9)

 mb = 4.1 (  3)  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
 HDC  ePg     21:29:43.29  -0.7    0.5 352                                   HDC 
 JTS  ePn     21:29:57.01   0.1    1.2 312                                   JTS 
      eSn     21:30:13.25  S res =  -0.1 
 ESPN ePn     21:30:13.36  -4.1    2.7 355                                   ESPN
      eSn     21:30:50.83  S res =   0.6 
 BOAB ePn     21:30:26.55   0.2    3.3 332                                   BOAB
 BCIP ePn     21:30:37.65   0.2    4.2  94                                   BCIP
 MTDJ ePn     21:32:08.41   0.5   10.7  35                                   MTDJ
 060A ePn     21:33:41.80   0.0   17.8  11 b:2.6+2 1.1 5.3                   060A
 SJG  eP      21:33:58.50  -1.3   19.3  62 b:1.7+1 1.0 4.3                   SJG 
 X37A eP      21:35:15.06  -1.5   27.1 339 b:3.2+0 .85 4.0                   X37A



 Generated 2013 JAN 24 at 06:39 UTC

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