Phase Data

Explanation of Parameters


      5 FEB 2013  ( 36)

     ot  = 13:13:48.92   +/-   3.83              NORTHERN QINGHAI, CHINA         
     lat =      38.916   +/-    4.5
     lon =      99.914   +/-    6.0              MAGNITUDE 4.1 (GS)       
     dep =         6.4   +/-   29.0   

     47 km (29 miles) W of Zhangye, Gansu, China (pop 114,000)
     202 km (126 miles) WNW of Jinchang, Gansu, China
     226 km (140 miles) ESE of Yumen, Gansu, China
     1422 km (883 miles) W of BEIJING, Beijing, China

     nph =   22 of  22    se = 0.76    FE=325                            B   

     error ellipse = ( 78.7, 85.1, 44.9;242.8,  4.7,  9.0;332.9,  1.3,  6.2)

 mb = 4.1 ( 12)  ML = 0.0 (  0)  mblg = 3.2 (  1)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 XAN  ePn     13:15:54.72  -1.0    8.7 121 L:4.0-2 1.4 4.1X g:3.0-2 1.2 3.2  XAN 
 SONA1ePn     13:16:15.55   1.1   10.1  26                                   SONA
 ULN  ePn     13:16:17.27  -0.5   10.3  28                                   ULN 
 KMI  ePn     13:17:08.60   1.2   14.0 169                                   KMI 
 SHL  ePn     13:17:20.26  -0.4   14.9 209                                   SHL 
 MK01 ePn     13:17:21.87  -0.8   15.1 307                                   MK01
 MKAR ePn     13:17:22.26  -0.6   15.1 307 b:1.6+1 .65 4.6                   MKAR
 MK31 ePn     13:17:22.38  -0.5   15.1 307                                   MK31
 MAKZ ePn     13:17:25.44  -0.1   15.3 307 b:3.5+0 .70 3.8                   MAKZ
 KDJ  ePn     13:17:54.76   0.3   17.6 288 b:8.0+0 1.0 3.8                   KDJ 
 ZALV eP      13:18:02.59   0.3   18.2 331                                   ZALV
 ZAA0 ePn     13:18:03.23   1.0   18.2 331 b:6.1+0 1.4 3.6                   ZAA0
 KURK eP      13:18:11.85  -0.2   19.1 315 b:6.0+0 .80 3.9                   KURK
 FRU1 eP      13:18:16.03  -0.6   19.5 290 b:1.5+1 .40 4.6                   FRU1
 AAK  eP      13:18:19.38   1.7   19.6 289 b:4.1+0 1.1 3.6                   AAK 
 CHTO eP      13:18:22.97   0.2   20.0 183 b:1.2+1 1.2 4.1                   CHTO
 CM01 eP      13:18:26.76  -0.2   20.4 183                                   CM01
 ARSB eP      13:18:30.44   0.5   20.7 285 b:3.4+1 1.4 4.5                   ARSB
 CHGR eP      13:19:03.53  -0.2   23.9 279 b:8.7+0 .92 4.3                   CHGR
 BRVK eP      13:19:10.92  -0.1   24.8 315 b:4.4+0 .70 4.2                   BRVK
 ABKAReP      13:19:59.57  -0.2   30.2 303                                   ABKA
 ARU  eP      13:20:17.31  -0.7   32.3 317 b:8.6+0 1.1 4.6                   ARU 



 Generated 2013 FEB  5 at 14:56 UTC

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