Hypocentral Location:

Event ID	30180424
Origin Time	1998/06/18 23:24:40
Latitude	38.7942
Longitude	-122.7400
Depth (TT)	2.8 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Ma	3.63 (not authoritative)
Md	3.55 (not authoritative)
Mw	3.75 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	5.695	12.348	119.872
N	-0.860	33.103	218.077
P	-4.836	54.089	12.276

Source Composition:

Type	Percent
DC	70
CLVD	30
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	5.27e+21 Dyne-cm
Mxx	-6.139e+20 Dyne-cm
Mxy	-2.986e+21 Dyne-cm
Mxz	-2.528e+21 Dyne-cm
Myy	3.782e+21 Dyne-cm
Myz	7.858e+20 Dyne-cm
Mzz	-3.168e+21 Dyne-cm
Variance Reduction	67%
Version number	126
Solution time	2011/07/19 22:39:56 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	56	-53	65
NP2	175	-142	44

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