NCSS Moment Tensor Solution

Solution reviewed by Claire Doody

Moment Tensor Diagram

Variance Reduction vs Depth plot
Hypocentral Location:
Event ID73667866
Origin Time2021/12/23 03:28:52
Latitude40.3752
Longitude-124.2925
Depth (TT)21.0 km
Depth (MT; not authoritative)21 km

Magnitudes:
Md3.8 (not authoritative)
Ml3.49 (not authoritative)
Mw3.87 (authoritative)

Principal Axes:
Scale1.0E+21 Dyne-cm
AxisValuePlungeAzimuth
T7.7795.706271.942
N0.47381.61844.641
P-8.2536.119181.329

Source Composition:
TypePercent
DC89
CLVD11
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo8.02e+21 Dyne-cm
Mxx-8.140e+21 Dyne-cm
Mxy-4.450e+20 Dyne-cm
Mxz9.491e+20 Dyne-cm
Myy7.694e+21 Dyne-cm
Myz-7.009e+20 Dyne-cm
Mzz4.464e+20 Dyne-cm
Variance Reduction73%
Version number2
Solution time2021/12/23 19:21:17 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP1227-890
NP2317-18082

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