Phase Data

Explanation of Parameters


     17 MAR 2013  ( 76)

     ot  = 23:41:24.21   +/-   1.56              NORTHERN TEXAS                  
     lat =      32.516   +/-    7.7
     lon =     -96.893   +/-    9.2              MAGNITUDE 2.6 (GS)       
     dep =         4.9   +/-    2.0   

     15 km (9 miles) NNW of Waxahachie, Texas (pop 18,000)
     31 km (19 miles) SSW of Dallas, Texas (pop 1,188,000)
     46 km (29 miles) ESE of Fort Worth, Texas (pop 534,000)
     262 km (163 miles) NNE of AUSTIN, Texas
 
     Felt at Cedar Hill.

     nph =   12 of  15    se = 0.77    FE=500                            A   

     error ellipse = (302.0,  0.0, 15.7; 32.0,  0.0, 10.2;189.0, 89.0,  3.1)

 mb = 0.0 (  0)  ML = 0.0 (  0)  mblg = 2.6 (  9)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 WHTX ePg     23:41:37.26  -0.5    0.7 223                                   WHTX
 435B ePn     23:41:56.27   0.0    1.8 199                                   435B
      eSn     23:42:23.07  S res =   3.3 
 X37A ePn     23:42:04.03  -0.5    2.4  31 g:1.0-2 .82 2.3                   X37A
 ABTX ePn     23:42:04.23   1.1    2.3 273 g:6.0-2 1.1 3.0                   ABTX
      eSn     23:42:34.93  S res =   2.8X
 WMOK ePn     23:42:09.39   0.8    2.7 325 g:1.0-2 .85 2.3                   WMOK
 JCT  ePn     23:42:14.66  -0.7    3.2 232 g:3.0-2 .80 2.8                   JCT 
      ePg     23:42:24.32   2.6X
 WLAR ePn     23:42:16.71  -1.0    3.4  69 g:1.0-2 .71 2.2                   WLAR
 MIAR ePn     23:42:17.95  -0.4    3.4  53                                   MIAR
 Z41A ePn     23:42:20.05   0.5    3.5  77 g:2.0-2 1.2 2.8                   Z41A
 833A ePg     23:42:54.24   7.1X   4.7 208 g:1.0-2 .77 2.5                   833A
 TX31 ePn     23:43:02.55  -0.2    6.7 243                                   TX31
      ePn     23:43:02.74   0.4 



 Generated 2013 MAR 20 at 06:24 UTC

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