Phase Data

Explanation of Parameters


     18 FEB 2013  ( 49)

     ot  = 10:59:36.72   +/-   1.41              IZU ISLANDS, JAPAN REGION       
     lat =      32.144   +/-   10.7
     lon =     138.664   +/-   10.7              MAGNITUDE 4.6 (GS)       
     dep =        10.3   +/-    4.0   

     151 km (94 miles) SW of Hachijo-jima, Izu Islands, Japan (pop 8,000)
     296 km (184 miles) SSE of Hamamatsu, Honshu, Japan
     314 km (195 miles) S of Shizuoka, Honshu, Japan
     405 km (252 miles) SSW of TOKYO, Japan

     nph =   71 of  71    se = 0.70    FE=211                            A   

     error ellipse = (136.0,  4.0, 18.7;227.0,  3.0, 13.6;351.0, 84.0,  5.9)

 mb = 4.6 ( 44)  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
 JHJ2 ePn     10:59:59.03  -2.8    1.4  45                                   JHJ2
      eSn     11:00:17.89  S res =  -2.2 
 INU  ePn     11:00:28.76  -2.1    3.5 337                                   INU 
 MAJO ePn     11:00:42.98  -0.7    4.4 355                                   MAJO
 MJB9 ePn     11:00:43.78   0.1    4.4 355                                   MJB9
 JNU  ePn     11:01:16.66   2.3    6.6 281                                   JNU 
 ERM  ePn     11:02:07.69   0.7   10.5  19                                   ERM 
 JOW  ePn     11:02:12.21   5.1   10.5 242                                   JOW 
 YSS  ePn     11:03:07.21  -3.1   15.1  11 b:3.7+1 1.0 4.8                   YSS 
 SONA1eP      11:05:37.54   0.8   29.0 312                                   SONA
 CHTO eP      11:06:55.80   0.5   38.0 259 b:9.3+0 .80 4.6                   CHTO
 CM01 eP      11:06:56.39  -0.3   38.2 259                                   CM01
 CM31 eP      11:06:57.07   0.4   38.2 259                                   CM31
 BILL epwP    11:07:11.78   0.2   39.4  16                                   BILL
 ZALV eP      11:07:40.97  -0.7   43.7 316                                   ZALV
 MK01 eP      11:07:51.79  -0.2   45.0 306                                   MK01
 MK31 eP      11:07:51.88  -0.1   45.0 306                                   MK31
 MKAR eP      11:07:51.98   0.0   45.0 306 b:2.6+1 .75 5.2                   MKAR
 MTN  eP      11:07:53.77  -1.1   45.3 190 b:1.5+1 .95 4.9                   MTN 
 MAKZ eP      11:07:54.03   0.3   45.2 306 b:3.8+0 .85 4.4                   MAKZ
 KURK eP      11:08:09.89  -0.4   47.3 312 b:1.1+1 .95 4.9                   KURK
 ANM  eP      11:08:11.82   4.5   47.0  29 b:5.2+0 1.0 4.6                   ANM 
 NRN  eP      11:08:32.25   0.2   50.1 300 b:3.9+0 1.0 4.3                   NRN 
 AAK  eP      11:08:38.35  -0.1   50.9 301 b:5.8+0 1.1 4.4                   AAK 
 FITZ eP      11:08:41.93  -0.6   51.5 196 b:4.1+0 .80 4.4                   FITZ
 WB2  eP      11:08:44.20  -1.8   52.0 185                                   WB2 
      eP      11:08:44.85  -1.1 
 WRAB eP      11:08:44.40  -1.5   52.0 185 b:6.3+0 .80 4.6                   WRAB
 ARSB eP      11:08:49.40   0.7   52.3 300 b:9.5+0 1.0 4.7                   ARSB
 KKAR eP      11:08:58.70  -0.2   53.7 303                                   KKAR
 KK31 eP      11:08:58.70  -0.2   53.7 303                                   KK31
 TOLK eP      11:09:01.19   1.7   53.8  26 b:4.7+0 1.0 4.4                   TOLK
 MDM  eP      11:09:03.18   0.6   54.3  30 b:7.2+0 1.0 4.6                   MDM 
 GAR  eP      11:09:05.96  -1.4   54.8 298 b:1.4+1 .86 5.0                   GAR 
 ILB  eP      11:09:08.95   2.2   54.8  30                                   ILB 
 AS01 eP      11:09:11.64  -1.5   55.7 185                                   AS01
 AS31 eP      11:09:11.92  -1.3   55.7 185 b:1.1+0 .60 4.1                   AS31
 CHGR eP      11:09:14.35   0.1   55.8 298 b:2.5+1 .82 5.3                   CHGR
 EPYK eP      11:09:35.95   0.5   58.9  28 b:1.1+1 .70 5.1                   EPYK
 ABKAReP      11:09:38.95  -0.4   59.4 312                                   ABKA
 INK  eP      11:09:41.03  -0.3   59.8  25 b:3.2+0 .80 4.5                   INK 
 RES  eP      11:10:34.63  -0.1   67.9  13 b:5.5+0 1.0 4.7                   RES 
 FIA1 eP      11:11:00.07  -0.6   72.1 332                                   FIA1
 PINE eP      11:11:20.51   0.4   75.3  47 b:9.9+0 .90 4.8                   PINE
 J08A eP      11:11:29.09  -0.9   77.0  47 b:5.8+0 .95 4.6                   J08A
 BMO  eP      11:11:29.55   0.0   76.9  45 b:3.7+0 1.0 4.4                   BMO 
 NC204eP      11:11:33.48  -0.3   77.8 337                                   NC20
 LRM  eP      11:11:42.41   3.1   78.7  41                                   LRM 
 DLMT eP      11:11:43.46   0.1   79.4  43 b:5.1+0 .95 4.5                   DLMT
 NV01 eP      11:11:44.92  -0.5   79.8  51                                   NV01
 BOZ  eP      11:11:45.50   0.0   79.8  42 b:4.3+0 1.1 4.3                   BOZ 
 BR131eP      11:11:48.80   0.3   80.4 311                                   BR13
 ELK  eP      11:11:49.42   0.2   80.5  48 b:2.8+0 .95 4.2                   ELK 
 BUR04eP      11:11:49.95  -0.2   80.7 321                                   BUR0
 YHB  eP      11:11:51.25   1.5   80.6  43 b:4.0+0 .90 4.4                   YHB 
 IMW  eP      11:11:54.27   0.9   81.3  43 b:2.6+0 .90 4.3                   IMW 
 HVU  eP      11:11:54.46   0.4   81.4  46 b:2.5+0 .82 4.3                   HVU 
 TPNV eP      11:11:56.80  -0.2   82.0  51 b:5.0+0 .85 4.6                   TPNV
 DUG  eP      11:11:59.01   0.2   82.3  47 b:4.7+0 .80 4.7                   DUG 
 PDAR eP      11:11:59.94  -1.2   82.7  44                                   PDAR
 NLU  eP      11:12:02.13   0.1   82.9  47 b:2.5+0 .82 4.4                   NLU 
 MPU  eP      11:12:03.36   0.1   83.1  47 b:4.3+0 1.0 4.6                   MPU 
 P17A eP      11:12:07.99   0.3   84.0  47 b:5.0+0 .86 4.8                   P17A
 MTPU eP      11:12:08.53   0.8   84.0  49 b:2.3+0 .86 4.4                   MTPU
 Q16A eP      11:12:08.65   0.6   84.1  47 b:2.9+0 .88 4.5                   Q16A
 KNB  eP      11:12:08.84   0.4   84.2  50 b:5.8+0 1.0 4.8                   KNB 
 SRU  eP      11:12:09.40  -0.1   84.4  47 b:5.1+0 .64 4.9                   SRU 
 GLA  eP      11:12:13.27   0.0   85.1  54 b:6.0+0 1.0 4.8                   GLA 
 WUAZ eP      11:12:17.67   0.0   86.0  50 b:4.7+0 1.0 4.6                   WUAZ
 BLO  eP      11:13:10.57  -0.8   97.6  34 b:1.6+1 .40 6.0                   BLO 
 MMRI eS      11:14:07.96  -1.0   43.5 204                                   MMRI



 Generated 2013 FEB 18 at 11:16 UTC

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