Hypocentral Location:

Event ID	71784801
Origin Time	2012/05/13 12:38:52
Latitude	38.7873
Longitude	-122.7757
Depth (TT)	2.8 km
Depth (MT; not authoritative)	8 km fixed

Magnitudes:

Md	3.35 (not authoritative)
Ml	3.47 (not authoritative)
Mw	3.9 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	8.965	17.029	124.516
N	-0.211	72.088	323.143
P	-8.754	5.390	216.172

Source Composition:

Type	Percent
DC	95
CLVD	5
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	8.86e+21 Dyne-cm
Mxx	-3.036e+21 Dyne-cm
Mxy	-7.952e+21 Dyne-cm
Mxz	-8.111e+20 Dyne-cm
Myy	2.535e+21 Dyne-cm
Myz	2.589e+21 Dyne-cm
Mzz	5.005e+20 Dyne-cm
Variance Reduction	79%
Version number	3
Solution time	2012/05/13 13:28:47 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	169	164	82
NP2	262	8	74

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