Magnitude 8.3 HOKKAIDO, JAPAN REGION
2003 September 25 19:50:06 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
USGS Fast Moment Tensor Solution
03/09/25 19:50: 8.93
HOKKAIDO, JAPAN REGION
Epicenter: 42.171 143.719
MW 8.1
USGS MOMENT TENSOR SOLUTION
Depth 13 No. of sta: 55
Moment Tensor; Scale 10**21 Nm
Mrr= 0.35 Mtt=-0.18
Mff=-0.17 Mrt= 1.01
Mrf= 1.18 Mtf=-0.26
Principal axes:
T Val= 1.56 Plg=52 Azm=309
N 0.08 2 41
P -1.64 38 132
Best Double Couple:Mo=1.6*10**21
NP1:Strike=234 Dip= 7 Slip= 103
NP2: 41 83 88
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Explanation of Parameters
Current USGS Fast Moment Tensor Solutions
USGS E-mail Notification Services
Source Parameter Search
For more information, contact Stuart Sipkin sipkin@usgs.gov

