USGS Fast Moment Tensor Solution
Because of the size (M 8.7) of this earthquake, point-source methods that use only the body-wave portion of the seismogram are inadequate for measuring the true magnitude.
05/03/28 16:09:37.06
NORTHERN SUMATRA, INDONESIA
Epicenter: 2.093 97.016
MW 8.1
USGS MOMENT TENSOR SOLUTION
Depth 21 No. of sta: 17
Moment Tensor; Scale 10**21 Nm
Mrr= 0.26 Mtt=-0.20
Mff=-0.07 Mrt= 1.12
Mrf=-1.04 Mtf=-0.20
Principal axes:
T Val= 1.70 Plg=47 Azm= 45
N -0.33 3 312
P -1.37 43 219
Best Double Couple:Mo=1.5*10**21
NP1:Strike=251 Dip= 4 Slip= 29
NP2: 132 88 93
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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
