Hypocentral Location:

Event ID	30188256
Origin Time	1998/08/01 06:01:44
Latitude	37.5698
Longitude	-118.7913
Depth (TT)	1.8 km
Depth (MT; not authoritative)	5 km fixed

Magnitudes:

Ma	4.6 (not authoritative)
Md	4.13 (not authoritative)
Ml	4.32 (not authoritative)
Mw	4.06 (authoritative)

Principal Axes:

Scale	1.0E+22 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.812	11.383	254.224
N	-0.523	78.574	69.218
P	-1.289	0.971	164.029

Source Composition:

Type	Percent
DC	42
CLVD	58
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.55e+22 Dyne-cm
Mxx	-1.065e+22 Dyne-cm
Mxy	7.897e+21 Dyne-cm
Mxz	-1.104e+21 Dyne-cm
Myy	1.497e+22 Dyne-cm
Myz	-4.384e+21 Dyne-cm
Mzz	-4.323e+21 Dyne-cm
Variance Reduction	90%
Version number	2
Solution time	2012/04/11 17:37:08 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	30	9	83
NP2	299	173	81

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