NCSS Moment Tensor Solution

Solution reviewed by Nam Maneerat

Moment Tensor Diagram

Variance Reduction vs Depth plot
Hypocentral Location:
Event ID73666831
Origin Time2021/12/21 04:34:20
Latitude40.4475
Longitude-124.2842
Depth (TT)27.5 km
Depth (MT; not authoritative)27 km

Magnitudes:
Md3.49 (not authoritative)
Ml3.47 (not authoritative)
Mw3.76 (authoritative)

Principal Axes:
Scale1.0E+21 Dyne-cm
AxisValuePlungeAzimuth
T5.2757.310290.315
N0.24779.00461.626
P-5.5228.170199.260

Source Composition:
TypePercent
DC91
CLVD9
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo5.40e+21 Dyne-cm
Mxx-4.194e+21 Dyne-cm
Mxy-3.371e+21 Dyne-cm
Mxz9.864e+20 Dyne-cm
Myy3.982e+21 Dyne-cm
Myz-3.273e+20 Dyne-cm
Mzz2.121e+20 Dyne-cm
Variance Reduction72%
Version number1
Solution time2021/12/21 16:30:53 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP1245-1189
NP2335-17979

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