Hypocentral Location:

Event ID	21339029
Origin Time	2004/01/31 02:11:23
Latitude	37.0988
Longitude	-121.5643
Depth (TT)	6.5 km
Depth (MT; not authoritative)	8 km fixed

Magnitudes:

Md	3.64 (not authoritative)
Ml	3.74 (not authoritative)
Mw	3.58 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	2.733	19.259	85.603
N	0.271	53.867	327.011
P	-3.004	29.260	186.892

Source Composition:

Type	Percent
DC	82
CLVD	18
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	2.87e+21 Dyne-cm
Mxx	-2.173e+21 Dyne-cm
Mxy	-1.292e+20 Dyne-cm
Mxz	1.445e+21 Dyne-cm
Myy	2.417e+21 Dyne-cm
Myz	9.321e+20 Dyne-cm
Mzz	-2.436e+20 Dyne-cm
Variance Reduction	64%
Version number	1
Solution time	2009/10/20 02:37:22 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	318	-144	84
NP2	223	-8	55

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