Hypocentral Location:

Event ID	21038803
Origin Time	1999/07/29 04:52:27
Latitude	38.7965
Longitude	-122.7338
Depth (TT)	2.9 km
Depth (MT; not authoritative)	3.5 km fixed

Magnitudes:

Ma	3.54 (not authoritative)
Md	3.51 (not authoritative)
Ml	3.6 (not authoritative)
Mw	3.66 (authoritative)

Principal Axes:

Scale	1.0E+21 Dyne-cm
Axis	Value	Plunge	Azimuth
T	4.668	9.455	96.560
N	-1.670	10.412	188.314
P	-2.998	75.865	325.166

Source Composition:

Type	Percent
DC	28
CLVD	72
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	3.83e+21 Dyne-cm
Mxx	-1.643e+21 Dyne-cm
Mxy	-6.628e+20 Dyne-cm
Mxz	-3.754e+20 Dyne-cm
Myy	4.390e+21 Dyne-cm
Myz	1.200e+21 Dyne-cm
Mzz	-2.748e+21 Dyne-cm
Variance Reduction	64%
Version number	3
Solution time	2011/07/18 23:11:17 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	16	-77	55
NP2	174	-108	37

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