Phase Data

Explanation of Parameters


     20 FEB 2013  ( 51)

     ot  = 15:20:27.67   +/-   0.80              TAIWAN                          
     lat =      23.221   +/-    6.7
     lon =     121.531   +/-    6.1              MAGNITUDE 4.0 (GS)       
     dep =        10.0  (geophysicist)

     65 km (40 miles) NE of Taitung, Taiwan (pop 110,000)
     84 km (52 miles) S of Hualien, Taiwan (pop 109,000)
     114 km (71 miles) ESE of Chiayi, Taiwan (pop 270,000)
     201 km (125 miles) S of TAIPEI, Taiwan

     nph =   12 of  12    se = 0.87    FE=244                            A   

     error ellipse = (141.4,  0.0, 10.1; 51.4,  0.0,  6.3;  0.0,  0.0,  0.0)

 mb = 4.0 (  1)  ML = 4.0 (  8)  mblg = 3.9 (  6)  md = 4.0 (  8)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 YULB ePg     15:20:34.24   1.0    0.3 308 d:2.9+2     4.2  L:2.5+2 .50 4.1  YULB
 TWG  ePg     15:20:38.54  -0.4    0.6 227 d:1.9+2     3.9  L:1.3+2 .70 4.8  TWG 
 SSLB ePg     15:20:42.08  -0.6    0.8 317 d:1.9+2     4.0  L:1.4+1 .70 4.0  SSLB
                                           g:4.2+0 1.1 4.2 
 TPUB ePg     15:20:43.24  -0.5    0.8 276 d:1.9+2     4.0  L:2.7+1 .55 4.4  TPUB
                                           g:3.7+0 .90 4.3 
 NACB ePg     15:20:44.75  -1.2    1.0   4 d:2.0+2     4.1  L:8.2+0 1.0 3.9  NACB
                                           g:1.4+0 .70 4.0 
 YHNB ePn     15:20:53.74  -0.3    1.4 354 d:1.8+2     4.2  L:4.3+0 .95 3.9  YHNB
                                           g:4.2-1 .85 3.6 
 TATO ePn     15:20:58.40   0.4    1.7 359 d:1.2+2     4.0  L:3.0+0 .77 4.0  TATO
                                           g:6.4-1 1.0 3.8 
 YOJ  ePn     15:21:00.29   1.0    1.8  47 d:7.9+1     3.6  L:1.9+0 .85 3.8  YOJ 
                                           g:4.8-1 .90 3.7 
 JOW  ePn     15:22:11.15  -0.4    7.1  58 L:1.5-1 4.2 4.4X                  JOW 
 SSE  ePn     15:22:21.57  -0.4    7.8 358 L:6.0-2 3.4 4.1X                  SSE 
 QIZ  ePn     15:23:14.51   0.1   11.7 251                                   QIZ 
 XAN  ePn     15:24:06.97   1.4   15.4 317 b:1.3+1 1.6 4.0                   XAN 



 Generated 2013 FEB 20 at 16:24 UTC

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