Hypocentral Location:

Event ID	71872550
Origin Time	2012/10/31 15:29:53
Latitude	40.9737
Longitude	-123.6997
Depth (TT)	11.5 km
Depth (MT; not authoritative)	11 km fixed

Magnitudes:

Md	3.09 (not authoritative)
Ml	3.18 (not authoritative)
Mw	3.21 (authoritative)

Principal Axes:

Scale	1.0E+20 Dyne-cm
Axis	Value	Plunge	Azimuth
T	7.895	67.385	274.436
N	0.243	16.000	140.937
P	-8.138	15.554	46.360

Source Composition:

Type	Percent
DC	94
CLVD	6
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	8.02e+20 Dyne-cm
Mxx	-3.455e+20 Dyne-cm
Mxy	-3.972e+20 Dyne-cm
Mxz	-1.284e+20 Dyne-cm
Myy	-2.706e+20 Dyne-cm
Myz	-4.275e+20 Dyne-cm
Mzz	6.161e+20 Dyne-cm
Variance Reduction	62%
Version number	1
Solution time	2012/11/01 05:03:19 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	330	108	62
NP2	114	59	33

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