Hypocentral Location:

Event ID	21392076
Origin Time	2004/08/30 04:30:57
Latitude	36.5765
Longitude	-121.1782
Depth (TT)	8.5 km
Depth (MT; not authoritative)	11 km

Magnitudes:

Md	3.96 (not authoritative)
Mw	3.91 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	8.927	8.193	90.696
N	0.155	81.367	289.212
P	-9.082	2.704	181.086

Source Composition:

Type	Percent
DC	97
CLVD	3
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	9.00e+21 Dyne-cm
Mxx	-9.057e+21 Dyne-cm
Mxy	-2.791e+20 Dyne-cm
Mxz	4.202e+20 Dyne-cm
Myy	8.744e+21 Dyne-cm
Myz	1.246e+21 Dyne-cm
Mzz	3.123e+20 Dyne-cm
Variance Reduction	91%
Version number	1
Solution time	2009/10/23 05:00:02 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	136	172	86
NP2	226	4	82

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