Hypocentral Location:

Event ID	21386701
Origin Time	2004/08/07 07:32:08
Latitude	40.3105
Longitude	-124.5732
Depth (TT)	19.1 km
Depth (MT; not authoritative)	24 km fixed

Magnitudes:

Md	3.79 (not authoritative)
Mw	4.1 (authoritative)

Principal Axes:

Scale	1.0E+22 Dyne-cm
Axis	Value	Plunge	Azimuth
T	1.756	8.182	48.691
N	0.013	80.571	198.657
P	-1.769	4.656	318.020

Source Composition:

Type	Percent
DC	98
CLVD	2
Iso	(null)

Moment Tensor (Aki & Richards Convention):

Mo	1.76e+22 Dyne-cm
Mxx	-2.213e+21 Dyne-cm
Mxy	1.727e+22 Dyne-cm
Mxz	5.480e+20 Dyne-cm
Myy	1.843e+21 Dyne-cm
Myz	2.808e+21 Dyne-cm
Mzz	3.700e+20 Dyne-cm
Variance Reduction	61%
Version number	1
Solution time	2009/10/23 04:29:15 UTC

Best-fit Double Couple Solution

Plane	Strike	Rake	Dip
NP1	184	9	88
NP2	93	177	81

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