Phase Data

Explanation of Parameters


      4 FEB 2013  ( 35)

     ot  = 08:08:30.50   +/-   3.15              BABUYAN ISL REGION, PHILIPPINES 
     lat =      19.024   +/-   11.0
     lon =     121.052   +/-   13.8              MAGNITUDE 4.6 (GS)       
     dep =        48.9   +/-    8.4   

     103 km (64 miles) NNE of Laoag, Luzon, Philippines (pop 94,000)
     183 km (114 miles) SSW of Basco, Batan Islands, Philippines
     489 km (304 miles) N of MANILA, Philippines
     667 km (414 miles) S of TAIPEI, Taiwan

     nph =   36 of  36    se = 1.55    FE=248                            A   

     error ellipse = ( 87.0, 14.0, 21.6;181.0, 15.0, 17.1;316.0, 68.0, 11.5)

 mb = 4.6 ( 12)  ML = 4.3 ( 20)  mblg = 3.5 (  7)  md = 4.3 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 TWG  ePn     08:09:24.06  -2.1    3.8   0 L:2.3+0 .45 4.7  g:3.1-1 .90 3.9  TWG 
 TPUB ePn     08:09:31.26  -1.8    4.3 355 L:3.4-1 1.0 4.0                   TPUB
 YULB ePn     08:09:32.74  -1.4    4.4   3 L:2.1-1 .40 3.8  g:5.0-2 .95 3.2  YULB
 SSLB ePn     08:09:38.16  -1.3    4.7 359 L:2.6-1 .80 4.0  g:9.0-2 1.0 3.5  SSLB
 NACB ePn     08:09:43.74  -1.3    5.2   6 L:1.3-1 .50 3.9  g:5.0-2 .95 3.3  NACB
 YOJ  ePn     08:09:52.81   0.0    5.7  18 L:3.6-1 3.1 4.5                   YOJ 
 TATO ePn     08:09:56.22   0.4    5.9   4 L:1.8-1 1.6 4.2                   TATO
 JOW  ePn     08:10:53.02  -1.7   10.2  39                                   JOW 
 QIZ  ePn     08:10:57.45  -2.4   10.6 272                                   QIZ 
      eSn     08:12:53.88  S res =  -3.3 
 KS15 eP      08:12:50.23  -1.7   19.3  17                                   KS15
 KS01 eP      08:12:50.65  -1.1   19.3  17                                   KS01
 CM01 eP      08:13:09.59   0.3   20.9 272                                   CM01
 CHTO eP      08:13:10.22   1.1   20.9 273 b:1.4+1 .85 4.3                   CHTO
 BJT  eP      08:13:15.38   1.9   21.3 350 b:2.7+1 .80 4.7                   BJT 
 MK01 eP      08:16:18.12   0.7   42.1 320                                   MK01
      ePcP    08:18:10.87  -0.7 
 MK31 eP      08:16:18.52   0.9   42.1 320                                   MK31
 MKAR eP      08:16:18.63   1.0   42.1 320 b:1.4+1 .50 5.0                   MKAR
 AS31 eP      08:16:34.93  -0.4   44.2 163 b:9.0-1 .45 3.8                   AS31
 ZALV eP      08:16:37.44  -0.1   44.6 330                                   ZALV
 NRN  eP      08:16:37.77   2.1   44.3 310 b:1.3+1 .80 4.7                   NRN 
 NIL  eP      08:16:40.92   0.8   44.8 299 b:2.9+1 .75 5.2                   NIL 
 KURK eP      08:16:50.08   0.8   46.0 324 b:4.8+0 .95 4.4                   KURK
 GAR  eP      08:17:05.32   0.7   48.0 306 b:1.6+1 .68 5.2                   GAR 
 BTK  eP      08:17:05.45   2.4   47.8 307 b:3.1+0 .70 4.4                   BTK 
 KKAR eP      08:17:10.60   1.1   48.6 311                                   KKAR
 KK31 eP      08:17:10.60   1.1   48.6 311                                   KK31
      ePcP    08:18:34.00  -0.5 
 CHGR eP      08:17:11.71   0.7   48.8 305 b:1.1+1 .64 5.0                   CHGR
 BRVK eP      08:17:33.78   1.0   51.7 324 b:4.3+0 .65 4.6                   BRVK
 ABKAReP      08:18:11.70   0.3   57.0 317                                   ABKA
 BUR04eP      08:20:34.27  -0.7   80.0 317                                   BUR0
 YKB5 eP      08:21:12.94  -1.0   87.8  23                                   YKB5
 MOD  epP     08:22:11.97   0.4   97.1  41                                   MOD 
 WRAB eS      08:22:13.27  -2.5   40.9 161                                   WRAB



 Generated 2013 FEB  4 at 11:15 UTC

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