Hypocentral Location:

Event ID	21392238
Origin Time	2004/08/31 00:40:19
Latitude	35.6793
Longitude	-121.1042
Depth (TT)	4.4 km
Depth (MT; not authoritative)	5 km

Magnitudes:

Md	3.83 (not authoritative)
Mw	3.81 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	6.520	69.516	337.897
N	-0.337	15.961	117.860
P	-6.183	12.500	211.496

Source Composition:

Type	Percent
DC	90
CLVD	10
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	6.35e+21 Dyne-cm
Mxx	-3.667e+21 Dyne-cm
Mxy	-2.775e+21 Dyne-cm
Mxz	3.136e+21 Dyne-cm
Myy	-1.739e+21 Dyne-cm
Myz	-2.003e+20 Dyne-cm
Mzz	5.406e+21 Dyne-cm
Variance Reduction	74%
Version number	1
Solution time	2009/10/23 05:11:37 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	108	71	59
NP2	322	118	35

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