Hypocentral Location:

Event ID	21544051
Origin Time	2006/10/20 23:31:40
Latitude	38.8650
Longitude	-122.7830
Depth (TT)	2.0 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Md	3.53 (not authoritative)
Mw	3.86 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	9.964	6.269	312.013
N	-4.532	14.417	43.631
P	-5.432	74.225	199.131

Source Composition:

Type	Percent
DC	9
CLVD	91
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	7.70e+21 Dyne-cm
Mxx	1.825e+21 Dyne-cm
Mxy	-7.144e+21 Dyne-cm
Mxz	1.275e+21 Dyne-cm
Myy	3.368e+21 Dyne-cm
Myz	-1.092e+21 Dyne-cm
Mzz	-5.192e+21 Dyne-cm
Variance Reduction	73%
Version number	3
Solution time	2013/01/30 06:36:56 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	235	-72	53
NP2	26	-112	41

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