NCSS Moment Tensor Solution

Solution reviewed by Li-Wei Chen

Moment Tensor Diagram
Hypocentral Location:
Event ID73618286
Origin Time2021/08/31 08:01:11
Latitude40.2815
Longitude-124.4012
Depth (TT)32.4 km
Depth (MT; not authoritative)33 km fixed

Magnitudes:
Md3.58 (not authoritative)
Mh3.4 (not authoritative)
Ml3.68 (not authoritative)
Mw4 (authoritative)

Principal Axes:
Scale1.0E+22 Dyne-cm
AxisValuePlungeAzimuth
T1.18719.823264.676
N0.14870.17186.057
P-1.3350.440354.835

Source Composition:
TypePercent
DC78
CLVD22
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo1.26e+22 Dyne-cm
Mxx-1.314e+22 Dyne-cm
Mxy2.178e+21 Dyne-cm
Mxz-4.210e+20 Dyne-cm
Myy1.047e+22 Dyne-cm
Myz-3.290e+21 Dyne-cm
Mzz2.672e+21 Dyne-cm
Variance Reduction74%
Version number3
Solution time2021/08/31 15:44:46 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP130816576
NP2421476

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