Hypocentral Location:

Event ID	40195779
Origin Time	2007/04/18 08:42:22
Latitude	39.4645
Longitude	-123.1073
Depth (TT)	4.7 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Md	5.01 (not authoritative)
Ml	4.57 (not authoritative)
Mw	4.79 (authoritative)

Principal Axes:

Scale	1.0E+23 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.918	3.566	300.852
N	-0.089	77.151	46.708
P	-1.829	12.328	210.071

Source Composition:

Type	Percent
DC	91
CLVD	9
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.87e+23 Dyne-cm
Mxx	-8.072e+22 Dyne-cm
Mxy	-1.601e+23 Dyne-cm
Mxz	3.781e+22 Dyne-cm
Myy	9.676e+22 Dyne-cm
Myz	7.495e+21 Dyne-cm
Mzz	-1.604e+22 Dyne-cm
Variance Reduction	86%
Version number	6
Solution time	2012/02/08 21:11:10 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	255	-11	84
NP2	346	-174	79

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