Phase Data

Explanation of Parameters


      4 FEB 2013  ( 35)

     ot  = 15:27:14.02   +/-   3.82              XIZANG-QINGHAI BORDER REGION    
     lat =      32.900   +/-    6.6
     lon =      94.897   +/-    7.1              MAGNITUDE 4.1 (GS)       
     dep =        27.5   +/-   36.4   

     197 km (123 miles) W of Gyegu (Yushu), Qinghai, China
     271 km (168 miles) ESE of Tanggulashan, Qinghai, China
     290 km (180 miles) NW of Qamdo, Xizang (Tibet), China
     2073 km (1287 miles) WSW of BEIJING, Beijing, China

     nph =   20 of  20    se = 1.19    FE=306                            C   

     error ellipse = (127.0, 85.1, 56.4;235.8,  1.6, 10.8;325.9,  4.6,  9.2)

 mb = 4.1 ( 10)  ML = 3.9 (  1)  mblg = 3.1 (  3)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 LSA  ePn     15:28:23.05   1.9    4.5 226 L:1.5-1 1.2 3.9  g:7.0-2 1.2 3.2  LSA 
 SHL  ePn     15:29:03.68  -1.8    7.8 201 L:4.7-1 .03 5.0X g:3.0-2 1.3 3.1  SHL 
 XAN  ePn     15:30:00.15   0.0   11.8  81                                   XAN 
 WMQ  ePn     15:30:05.59  -1.4   12.3 335                                   WMQ 
 ENH  eP      15:30:15.26   2.2   12.7  98 g:8.1-3 .85 3.1  b:8.1+0 .85 4.9X ENH 
 KDJ  ePn     15:31:06.93  -0.3   16.8 308 b:1.1+1 1.0 3.9                   KDJ 
 MK01 ePn     15:31:08.72   0.6   16.9 329                                   MK01
 MKAR ePn     15:31:09.06   0.7   16.9 329 b:9.7+0 .70 4.0                   MKAR
 MK31 ePn     15:31:09.18   0.8   16.9 329                                   MK31
 MAKZ ePn     15:31:10.09  -0.1   17.0 328 b:4.2+0 1.2 3.4                   MAKZ
 PBKT ePn     15:31:10.70  -1.2   17.2 160                                   PBKT
 SONA1ePn     15:31:12.37  -1.0   17.3  27                                   SONA
 ULN  ePn     15:31:15.60  -1.1   17.6  28 b:2.7+0 .80 3.4                   ULN 
 AAK  eP      15:31:31.94   0.6   18.8 307 b:4.9+0 1.0 3.7                   AAK 
 BTK  eP      15:31:51.75   0.7   20.6 297 b:3.9+1 1.7 4.5                   BTK 
 KURK eP      15:31:59.49  -0.6   21.5 331 b:6.6+0 .65 4.2                   KURK
 KBL  eP      15:32:00.24  -1.3   21.6 281 b:4.4+1 1.3 4.7                   KBL 
 ZALV eP      15:32:09.09   0.8   22.2 344                                   ZALV
 BRVK eP      15:32:51.43  -0.1   26.8 326 b:8.2+0 1.6 4.1                   BRVK
 MLR  eP      15:36:31.60   0.5   53.4 305 b:7.7+0 .90 4.7                   MLR 



 Generated 2013 FEB  6 at 21:05 UTC

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