NCSS Moment Tensor Solution

Solution reviewed by Sierra

Moment Tensor Diagram

Variance Reduction vs Depth plot
Hypocentral Location:
Event ID73552000
Origin Time2021/04/20 09:48:34
Latitude40.1930
Longitude-123.5927
Depth (TT)31.2 km
Depth (MT; not authoritative)36 km

Magnitudes:
Md3.99 (not authoritative)
Ml3.83 (not authoritative)
Mw4.03 (authoritative)

Principal Axes:
Scale1.0E+22 Dyne-cm
AxisValuePlungeAzimuth
T1.3431.212285.232
N0.10083.469184.584
P-1.4436.41615.369

Source Composition:
TypePercent
DC86
CLVD14
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo1.39e+22 Dyne-cm
Mxx-1.231e+22 Dyne-cm
Mxy-7.041e+21 Dyne-cm
Mxz-1.583e+21 Dyne-cm
Myy1.149e+22 Dyne-cm
Myz-7.075e+20 Dyne-cm
Mzz8.133e+20 Dyne-cm
Variance Reduction88%
Version number2
Solution time2021/04/20 10:43:05 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP1150-17586
NP260-485

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