Phase Data

Explanation of Parameters


     30 APR 2013  (120)

     ot  = 11:44:18.87   +/-   1.83              TONGA                           
     lat =     -19.089   +/-   15.6
     lon =    -175.347   +/-   11.5              MAGNITUDE 4.8 (GS)       
     dep =        10.0   +/-    1.9   

     152 km (94 miles) WSW of Neiafu, Tonga (pop 3,000)
     227 km (141 miles) N of NUKU`ALOFA, Tonga
     386 km (240 miles) SSW of Hihifo, Tonga
     2193 km (1362 miles) NNE of Auckland, New Zealand

     nph =   69 of  72    se = 0.90    FE=173                            A   

     error ellipse = (160.0,  0.0, 24.6; 70.0,  0.0, 16.5;283.0, 89.0,  2.8)

 mb = 4.8 ( 61)  ML = 5.5 (  2)  mblg = 4.4 (  1)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 NIUE ePn     11:45:41.42   5.7    5.1  91 L:6.0+0 .77 5.5  g:6.8-1 1.0 4.4  NIUE
 RAR  ePn     11:47:50.98   3.0   14.8 101                                   RAR 
 MARNCePn     11:48:04.52   3.3   15.8 259 b:8.4+1 1.1 4.8                   MARN
 OUZ  eP      11:48:39.14   0.4   18.8 209 b:6.0+0 .98 3.8                   OUZ 
 BFZ  eP      11:49:21.13   0.5   22.7 197 b:5.9+1 1.0 5.0                   BFZ 
 PPTF eP      11:49:38.48  -0.3   24.5  91                                   PPTF
 PPT  eP      11:49:38.54  -0.1   24.5  91                                   PPT 
 THZ  eP      11:49:38.81  -1.6   24.7 201                                   THZ 
 KHZ  eP      11:49:42.88  -0.8   25.1 200 b:1.9+1 .88 4.8                   KHZ 
 OXZ  eP      11:49:54.20  -1.3   26.4 201 b:1.6+1 .98 4.7                   OXZ 
 MQZ  eP      11:49:55.78  -1.0   26.5 200 b:2.8+1 1.1 4.8                   MQZ 
 RPZ  eP      11:50:01.59  -0.1   27.1 202 b:1.3+1 .46 4.9                   RPZ 
 FOZ  eP      11:50:04.96   0.6   27.4 204 b:3.9+1 1.1 5.1                   FOZ 
 LBZ  eP      11:50:10.07   0.4   28.0 202 b:6.9+0 .78 4.5                   LBZ 
 ODZ  eP      11:50:12.04  -1.3   28.4 201 b:1.8+1 1.2 4.7                   ODZ 
 WKZ  eP      11:50:17.30   0.4   28.8 204 b:3.9+1 1.1 5.1                   WKZ 
 MLZ  eP      11:50:26.45   2.4   29.6 204 b:1.5+1 1.0 4.7                   MLZ 
 WHZ  eP      11:50:28.50   0.0   30.1 204 b:2.7+1 1.1 5.0                   WHZ 
 EIDS eP      11:50:43.34   0.9   31.6 252 b:7.6+0 1.1 4.5                   EIDS
 ARMA eP      11:50:44.20  -0.8   31.9 243 b:3.1+0 1.0 4.2                   ARMA
 CAN  eP      11:51:13.08  -1.7   35.4 235 b:6.6+0 1.0 4.5                   CAN 
 CTAO eP      11:51:23.19   1.6   36.1 262 b:6.2+1 1.0 5.4                   CTAO
 TOO  eP      11:51:42.74  -0.7   38.7 233                                   TOO 
 COEN eP      11:51:57.10   2.7   40.0 271 b:1.8+1 1.0 4.7                   COEN
 STKA eP      11:51:59.70   0.3   40.6 243 b:9.0-1 1.0 3.4                   STKA
 BBOO eP      11:52:37.13  -0.9   45.4 242 b:1.1+1 1.0 4.8                   BBOO
 WB2  eP      11:52:52.84   0.0   47.3 260 b:2.1+1 1.0 5.2                   WB2 
 WRAB eP      11:52:53.16   0.4   47.3 260 b:1.8+1 1.0 5.1                   WRAB
 AS31 eP      11:52:53.37   0.5   47.3 255 b:5.8+0 .75 4.8                   AS31
 MTN  eP      11:53:27.00   0.6   51.7 269 b:2.7+1 .60 5.4                   MTN 
 FORT eP      11:53:28.45  -1.3   52.1 245 b:1.7+1 .80 5.0                   FORT
 FITZ eP      11:53:56.15   0.2   55.7 261 b:7.4+0 1.0 4.7                   FITZ
 SOEI eP      11:54:19.13  -0.2   59.0 270 b:5.0+1 .70 5.8                   SOEI
 VNDA eP      11:54:22.30   0.3   59.5 186                                   VNDA
 SBA  eP      11:54:22.81   1.4   59.5 184                                   SBA 
 PSA00eP      11:54:28.15  -0.9   60.4 256 b:9.9+0 .85 5.0                   PSA0
 NWAO eP      11:54:33.66  -0.7   61.2 242 b:9.1+0 1.1 4.8                   NWAO
 MMRI eP      11:54:34.71   0.2   61.2 270 b:2.0+1 .80 5.3                   MMRI
      eS      12:02:53.06  S res =  -1.7X
 MORW eP      11:54:42.25  -1.9   62.7 247 b:5.0+0 .75 4.8                   MORW
 GIRL eP      11:55:02.45   0.7   65.3 253 b:5.4+1 1.0 5.7                   GIRL
 CASY eP      11:55:05.91  -1.2   66.3 205 b:5.4+0 .90 4.7                   CASY
 JAGI eP      11:55:23.58  -1.0   68.9 268 b:3.1+1 .90 5.5                   JAGI
 KSM  eP      11:56:05.39   0.1   75.7 277 b:8.3+0 .90 4.8                   KSM 
 CCUT eP      11:56:35.36   0.9   81.0  45 b:2.2+0 .88 4.2                   CCUT
 U15A eP      11:56:36.07   0.8X  81.2  47 b:2.9+0 .95 4.3                   U15A
 G08A eP      11:56:39.35   0.1   82.0  37 b:3.4+0 .85 4.5                   G08A
 F10A eP      11:56:46.07  -0.3   83.4  37 b:5.5+0 1.0 4.7                   F10A
 SRU  eP      11:56:47.27  -1.3   83.8  45 b:4.7+0 .68 4.8                   SRU 
 TMUT eP      11:56:47.60   0.7   83.4  45 b:5.5+0 .64 4.9                   TMUT
 HLID eP      11:56:48.06   0.2   83.6  40 b:3.2+0 .70 4.6                   HLID
 TCUT eP      11:56:50.95   0.0   84.2  43 b:1.2+1 .78 5.2                   TCUT
 TRF  eP      11:56:51.08  -1.1   84.6  11 b:6.0+0 .92 4.8                   TRF 
 PV05 eP      11:56:51.28  -0.3   84.3  47 b:2.5+0 .78 4.5                   PV05
 SCRK eP      11:56:51.91  -8.8   86.3  13 b:3.6+0 1.0 4.5                   SCRK
 PV09 eP      11:56:52.23   0.2   84.4  46                                   PV09
 ANMO eP      11:56:52.31  -0.6   84.6  50 b:2.2+0 .80 4.4                   ANMO
 RND  eP      11:56:53.16   0.0   84.8  12 b:6.9+0 .72 5.0                   RND 
 MCK  eP      11:56:54.26  -0.3   85.1  12 b:1.2+1 1.0 5.0                   MCK 
 MCMT eP      11:56:56.52   0.3   85.3  39                                   MCMT
 IPM  eP      11:56:57.61   0.1   85.4 276 b:1.4+1 .70 5.3                   IPM 
 WRH  eP      11:56:58.07  -0.5   85.9  12 b:8.1+0 .96 4.9                   WRH 
 HDA  eP      11:56:58.60  -0.8   86.1  12 b:5.0+0 .80 4.7                   HDA 
 CCB  eP      11:56:58.72  -0.9   86.1  12 b:8.9+0 1.1 4.8                   CCB 
 DOT  eP      11:56:58.85  -0.2   86.0  14 b:4.4+0 .72 4.7                   DOT 
 MDM  eP      11:56:59.42  -1.3   86.3  11 b:4.2+0 .92 4.6                   MDM 
 ILB  eP      11:57:00.18  -0.9   86.4  12 b:2.0+0 .90 4.3                   ILB 
 DAWY eP      11:57:06.21   0.0   87.4  15 b:2.9+0 .85 4.6                   DAWY
 EGAK eP      11:57:06.63  -0.3   87.6  14 b:5.8+0 1.1 4.8                   EGAK
 INK  eP      11:57:28.06  -0.6   92.3  14 b:3.7+0 1.1 4.7                   INK 
 BUR08ePKPbc  12:04:02.74   0.9  147.0 334                                   BUR0
 CLNB eS      12:07:27.71   0.3X  85.3  54                                   CLNB



 Generated 2013 APR 30 at 12:11 UTC

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