NCSS Moment Tensor Solution

Solution reviewed by Jennifer Taggart

Moment Tensor Diagram
Hypocentral Location:
Event ID73504795
Origin Time2020/12/31 04:22:03
Latitude38.8393
Longitude-122.8227
Depth (TT)2.1 km
Depth (MT; not authoritative)3.5 km fixed

Magnitudes:
Md3.47 (not authoritative)
Ml3.64 (not authoritative)
Mw3.63 (authoritative)

Principal Axes:
Scale1.0E+21 Dyne-cm
AxisValuePlungeAzimuth
T4.2672.875119.704
N-1.6289.34629.231
P-2.63880.214226.634

Source Composition:
TypePercent
DC24
CLVD76
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo3.45e+21 Dyne-cm
Mxx-1.983e+20 Dyne-cm
Mxy-2.546e+21 Dyne-cm
Mxz-3.020e+19 Dyne-cm
Myy2.793e+21 Dyne-cm
Myz3.795e+20 Dyne-cm
Mzz-2.594e+21 Dyne-cm
Variance Reduction58%
Version number1
Solution time2020/12/31 05:05:41 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP121-10349
NP2219-7643

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