Magnitude 7.6 SCOTIA SEA
2003 August 04 04:37:20 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
USGS Fast Moment Tensor Solution
03/08/04 04:37:19.99
SCOTIA SEA
Epicenter: -60.553 -43.494
MW 7.1
USGS MOMENT TENSOR SOLUTION
Depth 35 No. of sta: 12
Moment Tensor; Scale 10**19 Nm
Mrr=-5.48 Mtt= 3.66
Mff= 1.84 Mrt=-0.34
Mrf=-1.25 Mtf= 1.67
Principal axes:
T Val= 4.73 Plg= 5 Azm=148
N 0.96 8 57
P -5.69 81 273
Best Double Couple:Mo=5.2*10**19
NP1:Strike=247 Dip=40 Slip= -78
NP2: 51 51 -100
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Note: This is a large, complex,
shallow event. The scalar
moment and MW are probably
underestimated.
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

