NCSS Moment Tensor Solution

Solution reviewed by Jennifer

Moment Tensor Diagram
Hypocentral Location:
Event ID21221952
Origin Time2002/04/18 11:35:41
Latitude38.7908
Longitude-122.7742
Depth (TT)3.1 km
Depth (MT; not authoritative)5 km fixed

Magnitudes:
Ma3.59 (not authoritative)
Md3.52 (not authoritative)
Ml3.54 (not authoritative)
Mw3.97 (authoritative)

Principal Axes:
Scale1.0e+21 Dyne-cm
AxisValuePlungeAzimuth
T11.0230.690297.633
N0.05163.506206.249
P-11.07326.48427.977

Source Composition:
TypePercent
DC99
CLVD1
Iso(null)
Moment Tensor:
Mo1.10e+22 Dyne-cm
Mxx-4.538e+21 Dyne-cm
Mxy-8.200e+21 Dyne-cm
Mxz-3.861e+21 Dyne-cm
Myy6.696e+21 Dyne-cm
Myz-2.208e+21 Dyne-cm
Mzz-2.157e+21 Dyne-cm
Variance Reduction78%
Version number1
Solution time2011/07/13 23:39:57 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP1166-16072
NP270-1971

Waveform data (solid line) and synthetic data (dashed line) from the moment tensor inversion: