Phase Data

Explanation of Parameters


     20 AUG 2011  (232)

     ot  = 16:55:02.50   +/-   2.62              VANUATU                         
     lat =     -18.260   +/-    8.7
     lon =     168.069   +/-    9.9              MAGNITUDE 7.5 (GS)       
     dep =        40.6   +/-    5.2   

     64 km (40 miles) SSW of PORT-VILA, Efate, Vanuatu (pop 30,000)
     190 km (118 miles) NW of Isangel, Tanna, Vanuatu
     316 km (196 miles) SSE of Luganville, Espiritu Santo, Vanuatu
     1849 km (1148 miles) ENE of BRISBANE, Queensland, Australia

     nph =   63 of  63    se = 1.29    FE=186                            A   

     error ellipse = ( 42.0, 26.0, 15.4;305.0, 14.0, 15.1;190.0, 59.0,  1.1)

 mb = 6.2 ( 52)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 DZM  ePn     16:55:58.65  -3.9    4.1 202                                   DZM 
 MSVF ePn     16:57:19.76   2.7    9.5  89                                   MSVF
 HNR  ePn     16:57:47.82  -0.3   11.8 317                                   HNR 
 FUNA ePn     16:58:26.44   1.1   14.5  50                                   FUNA
 LHI  ePn     16:58:38.19  -0.2   15.5 210 b:1.1+3 1.2 5.9                   LHI 
 RAO  ePn     16:58:54.18  -1.0   16.8 133                                   RAO 
 EIDS ePn     16:59:01.91   1.1   17.3 243 b:3.1+3 1.9 6.1                   EIDS
 OUZ  eP      16:59:05.59   0.3   17.6 165 b:3.0+3 1.5 6.2                   OUZ 
 ARMA eP      16:59:26.92   3.5   19.2 228 b:6.3+2 1.1 5.8                   ARMA
 AFI  eP      16:59:29.44  -0.7   19.8  80 b:2.2+3 1.4 6.3                   AFI 
 TARA eP      16:59:31.46  -1.1   20.1  14 b:4.6+3 1.5 6.6                   TARA
 HIZ  eP      16:59:41.68  -1.1   21.0 165 b:3.0+3 1.2 6.5                   HIZ 
 RABL eP      16:59:42.43   0.6   20.9 310 b:1.7+3 1.1 6.3                   RABL
 CTAO eP      16:59:42.99   3.7   20.7 261 b:6.9+2 1.0 6.0                   CTAO
 MXZ  eP      16:59:45.37   0.5   21.2 157 b:7.1+2 1.0 6.0                   MXZ 
 URZ  eP      16:59:48.27   1.1   21.4 160 b:1.7+3 1.0 6.4                   URZ 
 BKZ  eP      16:59:54.90   0.8   22.1 162 b:8.9+2 1.0 6.1                   BKZ 
 PMG  eP      16:59:55.94   1.4   22.1 291 b:3.5+3 1.9 6.5                   PMG 
 BFZ  eP      17:00:07.27  -0.9   23.4 164 b:8.3+2 1.1 6.1                   BFZ 
 SNZO eP      17:00:10.14  -0.2   23.7 168 b:2.0+3 1.4 6.4                   SNZO
 THZ  eP      17:00:12.35   0.8   23.8 171 b:5.5+2 .82 6.1                   THZ 
 CAN  eP      17:00:14.81   1.5   24.0 221 b:1.1+3 1.3 6.2                   CAN 
 KHZ  eP      17:00:15.44  -2.7   24.5 170 b:7.0+2 1.1 6.1                   KHZ 
 COEN eP      17:00:18.35   2.1   24.3 277 b:9.8+2 1.4 6.1                   COEN
 LTZ  eP      17:00:20.29   0.4   24.7 173 b:6.7+2 .82 6.2                   LTZ 
 OXZ  eP      17:00:24.64   0.2   25.2 173 b:1.0+3 1.0 6.3                   OXZ 
 FOZ  eP      17:00:24.71   0.1   25.2 177 b:5.0+2 .82 6.1                   FOZ 
 RPZ  eP      17:00:25.64  -1.4   25.5 175 b:1.7+3 1.3 6.4                   RPZ 
 CRLZ eP      17:00:25.91  -1.3   25.5 172 b:2.0+3 1.4 6.5                   CRLZ
 MQZ  eP      17:00:26.72  -1.7   25.7 172                                   MQZ 
 LBZ  eP      17:00:32.07  -0.5   26.1 177 b:4.7+2 1.3 5.9                   LBZ 
 MANU eP      17:00:33.07   1.9   25.9 306 b:1.1+3 1.6 6.2                   MANU
 WKZ  eP      17:00:36.55   0.4   26.5 179 b:5.6+2 1.1 6.1                   WKZ 
 ODZ  eP      17:00:38.27  -0.4   26.8 176 b:3.5+2 1.2 5.8                   ODZ 
 KWAJ eP      17:00:39.81   0.0   26.9 359 b:2.7+2 1.0 5.8                   KWAJ
 DCZ  eP      17:00:40.12  -1.6   27.1 181 b:4.4+2 1.1 6.0                   DCZ 
 PATS eP      17:00:40.13   1.8   26.7 338 b:9.9+2 1.2 6.3                   PATS
 WHZ  eP      17:00:44.38  -1.1   27.6 180 b:5.4+2 1.5 6.0                   WHZ 
 STKA eP      17:00:44.49  -0.3   27.5 235 b:1.9+2 1.0 5.7                   STKA
 PYZ  eP      17:00:46.91  -1.3   27.8 182 b:7.0+2 1.8 6.0                   PYZ 
 RAR  eP      17:01:11.73   0.8   30.4 101 b:7.1+2 1.8 6.1                   RAR 
 TAU  eP      17:01:13.11   4.0   30.2 211 b:4.3+2 1.4 6.0                   TAU 
 WRAB eP      17:01:22.78  -1.3   31.9 261 b:2.5+2 1.2 5.9                   WRAB
 WB2  eP      17:01:23.67  -0.5   31.9 261                                   WB2 
      eP      17:01:23.81  -0.3 
 BBOO eP      17:01:26.88   0.4   32.2 237 b:5.7+2 1.1 6.3                   BBOO
 AS31 eP      17:01:27.07  -0.8   32.3 254 b:1.3+2 .75 5.9                   AS31
 AS01 eP      17:01:27.64   0.1   32.3 254                                   AS01
 MTN  eP      17:01:59.83   0.3   35.9 273 b:3.6+2 1.2 6.2                   MTN 
 SAUI eP      17:02:09.66  -0.2   37.2 281 b:3.7+2 .90 6.3                   SAUI
 FAKI eP      17:02:17.71  -1.4   38.3 289 b:3.5+2 .90 6.2                   FAKI
 FORT eP      17:02:18.27  -0.9   38.3 243 b:3.9+3 .75 7.3                   FORT
 GUMO eP      17:02:25.10  -0.6   39.0 323 b:1.1+3 1.5 6.4                   GUMO
 XMAS eP      17:02:27.41  -2.0   39.5  63 b:4.5+2 1.1 6.2                   XMAS
 PPT  eP      17:02:36.71   1.0   40.2  96                                   PPT 
 JOHN eP      17:02:41.75  -1.5   41.2  34 b:8.5+2 1.4 6.3                   JOHN
 SOEI eP      17:03:00.24  -0.2   43.2 275 b:9.1+2 1.3 6.3                   SOEI
 MMRI eP      17:03:18.17   0.0   45.5 276 b:5.1+2 1.1 6.3                   MMRI
 MBWA eP      17:03:18.39   0.4   45.5 258                                   MBWA
 NWAO eP      17:03:34.97  -0.3   47.7 242 b:4.6+2 .95 6.5                   NWAO
 LUWI eP      17:03:34.98   0.0   47.6 286 b:7.8+2 1.0 6.7                   LUWI
 SBA  eP      17:05:03.97   2.0   59.6 180                                   SBA 
 JOW  eP      17:05:04.08   4.6   59.2 318                                   JOW 



 Generated 2011 AUG 20 at 17:07 UTC

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