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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     11 JUL 2007  (192)

     ot  = 17:10:18.20   +/-   0.52              NEAR WEST COAST OF HONSHU, JAPAN
     lat =      37.097   +/-    4.1
     lon =     137.519   +/-    6.8              MAGNITUDE 4.5 (GS)       
     dep =       251.1   +/-    5.2   

     75 km (45 miles) NW of Nagano, Honshu, Japan (pop 358,000)
     95 km (60 miles) NE of Kanazawa, Honshu, Japan (pop 453,000)
     160 km (100 miles) WNW of Maebashi, Honshu, Japan (pop 284,000)
     255 km (160 miles) NW of TOKYO, Japan

     nph =   38 of  42    se = 0.75    FE=226                            A   

     error ellipse = (264.0,  0.1, 10.4;173.0, 85.8,  8.0;354.0,  4.2,  6.2)

 mb = 4.4 ( 18)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 4.0 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 MAJO ePn     17:10:45.78  -6.6X   0.8 135 d:2.0+2     4.0  L:3.1-1 .30 2.4X MAJO
      eS      17:11:12.59  S res =  -6.5X  g:3.4-1 1.0 3.2X
 MJAR P       17:10:52.76   0.4    0.8 135                                   MJAR
      S       17:11:19.95  S res =   0.9X
 JNU  P       17:11:55.95   0.3    6.7 236                                   JNU 
 MDJ  eP      17:12:32.97   1.2    9.6 324 d:1.2+1     5.0X L:2.5-2 .50 4.1X MDJ 
                                           g:2.7-2 1.0 3.4X b:1.3+1 .50 4.3 
 YSS  iPnc    17:12:42.26  -1.7   10.6  20 g:2.0-2 1.0 3.3X b:1.0+2 .40 5.3  YSS 
 JOW  P       17:13:12.40  -0.4   12.9 220                                   JOW 
 BJT  eP      17:14:00.18   0.9   16.9 286 g:1.7-2 .90 3.6X b:1.3+1 .50 4.6  BJT 
 HIA  eP      17:14:06.16  -1.4   17.7 319 g:8.4-3 .80 3.4X b:7.6+0 .75 4.3  HIA 
 SONM P       17:15:20.22  -0.7   25.2 305                                   SONM
 YAK  eP      17:15:22.86   0.1   25.4 351 g:2.5-2 .95 4.1X b:1.7+1 .70 4.7  YAK 
 TLY  qP      17:15:45.23  -0.3   28.0 312 g:4.7-3 .90 3.4X b:4.7+0 .90 4.1  TLY 
 TIXI eP      17:16:45.56  -0.1   34.9 355 b:8.5+0 .76 4.4                   TIXI
 CM31 eP      17:17:15.66  -1.1   38.5 252 b:4.2+0 .89 4.0                   CM31
 CMAR P       17:17:16.65  -0.2   38.5 252                                   CMAR
 ZALV P       17:17:24.77  -0.2   39.6 312                                   ZALV
 ZAA0 eP      17:17:25.03   0.1   39.6 312                                   ZAA0
 MKAR P       17:17:40.30  -0.1   41.4 301                                   MKAR
 KURK eP      17:17:55.63  -0.6   43.4 308 b:2.9+1 .55 4.8                   KURK
 KAPI P       17:18:08.69  -0.8   45.1 205                                   KAPI
 TKM2 iPd     17:18:24.32   0.9   46.8 297 b:1.3+1 .73 4.3                   TKM2
 BRVK eP      17:18:34.26   0.4   48.3 312 b:6.2+0 .40 4.3                   BRVK
 AML  iPd     17:18:36.57   0.9   48.4 297 b:2.1+1 .73 4.6                   AML 
 ARU  eP      17:19:17.90   0.0   54.2 318 b:9.3+0 .65 4.5                   ARU 
 FITZ iPc     17:19:31.60   0.5   56.0 194 b:1.0+1 .70 4.5                   FITZ
 AKTK P       17:19:33.13   0.4   56.3 311                                   AKTK
 WRAB eP      17:19:36.00  -0.5   56.8 184 b:3.3+0 .55 4.2                   WRAB
 WB2  eP      17:19:36.27  -0.3   56.8 184                                   WB2 
 WRA  P       17:19:36.51  -0.1   56.8 184                                   WRA 
 MBWA eP      17:20:00.15  -0.6   60.3 199 b:8.6+0 .63 4.5                   MBWA
 ASAR P       17:20:02.40   0.2   60.5 184                                   ASAR
 ARCESP       17:20:17.55   0.7   62.8 338                                   ARCE
 FORT eP      17:20:51.30   0.4   68.1 189 b:1.1+1 .70 4.7                   FORT
 STKA eP      17:20:55.18   0.5   68.7 176                                   STKA
 AKASGP       17:21:15.00  -1.3   72.3 321                                   AKAS
 HFS  P       17:21:18.58   0.1   72.7 334                                   HFS 
 NOA  P       17:21:19.40  -0.2   72.9 336                                   NOA 
 CLL  eP      17:21:57.00   0.5   79.4 328 b:5.0+0 .70 4.4                   CLL 
      eSg     17:47:23.00
 GERESP       17:22:05.26   0.4   81.0 326                                   GERE
 TXAR P       17:23:02.85   1.6   92.5  50                                   TXAR



 Generated 2007 JUL 26 at 16:07 UTC

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

 


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