Phase Data

Explanation of Parameters


     25 JAN 2013  ( 25)

     ot  = 17:38:58.50   +/-   0.00          NORTHERN CALIFORNIA             
     lat =      38.242   +/-    0.0
     lon =    -122.052   +/-    0.0              MAGNITUDE 3.1 (NC)       
     dep =        12.9   +/-    0.0   

     21 km (13 miles) ESE of Napa, California (pop 72,000)
     29 km (18 miles) N of Concord, California (pop 121,000)
     34 km (21 miles) NW of Antioch, California (pop 90,000)
     62 km (38 miles) SW of SACRAMENTO, California (pop 407,000)
 
     ML 3.1 (NC).

     nph =   28 of  28    se = 0.00    FE=036                            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
 MCCM ePg     17:39:10.80  -0.5    0.7 262                                   MCCM
      eSg     17:39:21.22  S res =   1.2 
 GDXM ePg     17:39:13.87  -0.4    0.8 314                                   GDXM
      eSn     17:39:26.71  S res =  -1.0 
 AFDM ePg     17:39:17.68  -1.8    1.1  50                                   AFDM
      eSg     17:39:32.47  S res =  -1.3 
 HOPS ePg     17:39:19.19  -0.1    1.1 314                                   HOPS
 CMB  ePn     17:39:21.37  -1.4    1.3  99                                   CMB 
 ORV  ePn     17:39:21.59  -1.9    1.4  18                                   ORV 
 SAO  ePn     17:39:24.79  -1.0    1.5 162                                   SAO 
 RUBR ePn     17:39:27.90  -0.1    1.7  61                                   RUBR
      eSn     17:39:50.79  S res =   1.2 
 KCPM ePn     17:39:29.55  -0.8    1.9 321                                   KCPM
 BEKR ePn     17:39:33.95   0.5    2.1  39                                   BEKR
 PNTR ePn     17:39:34.83   1.3    2.1  66                                   PNTR
 VCNR ePn     17:39:35.12   0.8    2.1  60                                   VCNR
 MDPB ePn     17:39:36.29  -1.8    2.4 104                                   MDPB
 WDC  ePn     17:39:36.87  -0.1    2.4 351                                   WDC 
 KMRM ePn     17:39:37.88   1.1    2.3 327                                   KMRM
 YERR ePn     17:39:37.96   1.3    2.3  71                                   YERR
 OMMB ePn     17:39:38.64  -0.4    2.5 104                                   OMMB
 PAHR ePn     17:39:39.51  -0.1    2.5  54                                   PAHR
 RYN  ePn     17:39:42.38  -0.8    2.8  81                                   RYN 
 NV01 ePn     17:39:43.43  -1.9    3.0  85                                   NV01
 KVN  ePn     17:39:48.81   0.2    3.2  74                                   KVN 
 DAC  ePn     17:39:59.96  -0.6    4.1 118                                   DAC 
      eSg     17:40:58.37  S res =  -0.7 
 TPNV ePn     17:40:09.78  -0.7    4.8 104                                   TPNV



 Generated 2013 JAN 25 at 17:51 UTC

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