Magnitude 7.2 SOUTH ISLAND OF NEW ZEALAND
2003 August 21 12:12:50 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
USGS Fast Moment Tensor Solution
03/08/21 12:12:50.90
SOUTH ISLAND OF NEW ZEALAND
Epicenter: -45.183 167.121
MW 7.1
USGS MOMENT TENSOR SOLUTION
Depth 28 No. of sta: 20
Moment Tensor; Scale 10**19 Nm
Mrr= 2.55 Mtt= 0.34
Mff=-2.89 Mrt=-1.97
Mrf=-2.34 Mtf=-2.65
Principal axes:
T Val= 3.82 Plg=65 Azm=157
N 1.68 13 36
P -5.50 21 301
Best Double Couple:Mo=4.7*10**19
NP1:Strike= 8 Dip=27 Slip= 59
NP2: 222 67 105
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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

