NCSS Moment Tensor Solution

Solution reviewed by Nam Maneerat

Moment Tensor Diagram

Variance Reduction vs Depth plot
Hypocentral Location:
Event ID73666511
Origin Time2021/12/20 21:53:47
Latitude40.3762
Longitude-124.2162
Depth (TT)25.0 km
Depth (MT; not authoritative)36 km

Magnitudes:
Md3.7 (not authoritative)
Ml3.8 (not authoritative)
Mw3.93 (authoritative)

Principal Axes:
Scale1.0E+22 Dyne-cm
AxisValuePlungeAzimuth
T0.7729.695266.657
N0.42879.71866.998
P-1.2003.393176.077

Source Composition:
TypePercent
DC29
CLVD71
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo9.86e+21 Dyne-cm
Mxx-1.185e+22 Dyne-cm
Mxy1.302e+21 Dyne-cm
Mxz9.260e+20 Dyne-cm
Myy7.536e+21 Dyne-cm
Myz-6.365e+20 Dyne-cm
Mzz4.317e+21 Dyne-cm
Variance Reduction51%
Version number1
Solution time2021/12/20 23:07:19 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP142986
NP231117681

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