Hypocentral Location:

Event ID	71439771
Origin Time	2010/07/31 01:31:57
Latitude	39.3138
Longitude	-122.8145
Depth (TT)	9.9 km
Depth (MT; not authoritative)	8 km fixed

Magnitudes:

Md	2.84 (not authoritative)
Ml	2.8 (not authoritative)
Mw	3.01 (authoritative)

Principal Axes:

Scale	1.0E+20 Dyne-cm
Axis	Value	Plunge	Azimuth
T	4.120	16.445	133.790
N	-0.143	41.915	239.156
P	-3.976	43.487	27.532

Source Composition:

Type	Percent
DC	93
CLVD	7
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	4.05e+20 Dyne-cm
Mxx	1.480e+19 Dyne-cm
Mxy	-2.786e+20 Dyne-cm
Mxz	-2.498e+20 Dyne-cm
Myy	1.469e+20 Dyne-cm
Myz	-4.900e+18 Dyne-cm
Mzz	-1.617e+20 Dyne-cm
Variance Reduction	48%
Version number	1
Solution time	2010/07/31 04:27:47 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	75	-46	73
NP2	181	-157	47

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