Hypocentral Location:

Event ID	51221777
Origin Time	2009/05/18 11:40:34
Latitude	38.8187
Longitude	-122.8180
Depth (TT)	1.5 km
Depth (MT; not authoritative)	5 km fixed

Magnitudes:

Md	3.07 (not authoritative)
Ml	3.11 (not authoritative)
Mw	3.37 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.414	12.127	131.918
N	-0.012	77.542	325.354
P	-1.402	2.809	222.522

Source Composition:

Type	Percent
DC	98
CLVD	2
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.41e+21 Dyne-cm
Mxx	-1.568e+20 Dyne-cm
Mxy	-1.368e+21 Dyne-cm
Mxz	-1.456e+20 Dyne-cm
Myy	1.094e+20 Dyne-cm
Myz	2.640e+20 Dyne-cm
Mzz	4.740e+19 Dyne-cm
Variance Reduction	69%
Version number	1
Solution time	2009/05/18 19:46:11 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	177	169	83
NP2	268	7	79

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