NCSS Moment Tensor Solution

Solution reviewed by Sierra

Moment Tensor Diagram
Hypocentral Location:
Event ID21344222
Origin Time2004/02/18 20:37:46
Latitude38.8338
Longitude-122.7680
Depth (TT)1.9 km
Depth (MT; not authoritative)1.5 km fixed

Magnitudes:
Md4.07 (not authoritative)
Mw4.31 (authoritative)

Principal Axes:
Scale1.0e+22 Dyne-cm
AxisValuePlungeAzimuth
T4.31410.158115.928
N-1.32734.77418.782
P-2.98753.346219.860

Source Composition:
TypePercent
DC38
CLVD62
Iso(null)
Moment Tensor:
Mo3.65e+22 Dyne-cm
Mxx-6.310e+21 Dyne-cm
Mxy-2.436e+22 Dyne-cm
Mxz1.817e+21 Dyne-cm
Myy2.854e+22 Dyne-cm
Myz1.388e+22 Dyne-cm
Mzz-2.223e+22 Dyne-cm
Variance Reduction59%
Version number4
Solution time2011/07/27 00:01:29 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP1359-12964
NP2240-3846

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