Hypocentral Location:

Event ID	21400474
Origin Time	2004/09/28 19:31:28
Latitude	35.8385
Longitude	-120.3880
Depth (TT)	8.7 km
Depth (MT; not authoritative)	8 km fixed

Magnitudes:

Md	4.03 (not authoritative)
Ml	4.02 (not authoritative)
Mw	4.03 (authoritative)

Principal Axes:

Scale	1.0E+22 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.407	5.529	101.435
N	-0.030	82.513	238.875
P	-1.377	5.032	10.947

Source Composition:

Type	Percent
DC	96
CLVD	4
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.39e+22 Dyne-cm
Mxx	-1.263e+22 Dyne-cm
Mxy	-5.260e+21 Dyne-cm
Mxz	-1.429e+21 Dyne-cm
Myy	1.290e+22 Dyne-cm
Myz	1.128e+21 Dyne-cm
Mzz	-2.721e+20 Dyne-cm
Variance Reduction	72%
Version number	1
Solution time	2009/10/22 16:19:06 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	236	7	90
NP2	146	180	83

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