NCSS Moment Tensor Solution

Solution reviewed by Kathryn Materna

Moment Tensor Diagram

Variance Reduction vs Depth plot
Hypocentral Location:
Event ID72974586
Origin Time2018/02/23 13:28:40
Latitude37.8293
Longitude-121.9793
Depth (TT)7.4 km
Depth (MT; not authoritative)1.5 km

Magnitudes:
Md3.45 (not authoritative)
Ml3.5 (not authoritative)
Mw3.31 (authoritative)

Principal Axes:
Scale1.0E+21 Dyne-cm
AxisValuePlungeAzimuth
T1.13421.626140.377
N0.00666.622343.871
P-1.1408.456233.756

Source Composition:
TypePercent
DC99
CLVD1
Iso(null)
Moment Tensor (Aki & Richards Convention):
Mo1.14e+21 Dyne-cm
Mxx1.925e+20 Dyne-cm
Mxy-1.013e+21 Dyne-cm
Mxz-1.993e+20 Dyne-cm
Myy-3.266e+20 Dyne-cm
Myz3.809e+20 Dyne-cm
Mzz1.341e+20 Dyne-cm
Variance Reduction57%
Version number1
Solution time2018/02/23 14:17:27 UTC

Best-fit Double Couple Solution
PlaneStrikeRakeDip
NP118515881
NP22791069

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