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Explanation of Parameters

     15 JUL 2007  (196)

     ot  = 04:57:46.20   +/-   0.00         COQUIMBO, CHILE                 
     lat =     -30.709   +/-    0.0
     lon =     -71.541   +/-    0.0                                       
     dep =        24.3   +/-    0.0   

     85 km (55 miles) SSW of Coquimbo, Chile (pop 148,000)
     110 km (65 miles) NNW of Illapel, Chile (pop 21,000)
     250 km (155 miles) SSW of Vallenar, Chile
     315 km (195 miles) NNW of SANTIAGO, Chile
 
     ML 2.6 (GUC).

     nph =    4 of   8    se = 0.00    FE=135                            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 = 2.5 (  1)  mblg = 2.9 (  1)  md = 3.7 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 LSCH iPd     04:58:00.93  -1.2    0.8  18                                   LSCH
      iS      04:58:12.84  S res =  -0.1X
 TLL  iPd     04:58:02.15   0.0    0.8  50                                   TLL 
      iS      04:58:13.49  S res =   0.4X
 LCO  ePn     04:58:15.20  -1.4    1.8  24 d:8.8+1     3.7  L:8.5-2 .45 2.5  LCO 
      eSn     04:58:39.01  S res =  -0.2X  g:5.6-2 .65 2.9 
 LMEL eP      04:58:38.57   1.7    3.3 160                                   LMEL
      iS      04:59:17.68  S res =   1.9X



 Generated 2007 JUL 27 at 00:20 UTC

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