2008 National Seismic Hazard Maps

2008 National Seismic Hazard Maps-Fault parameters

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Fault Name	State
Great Valley 12	California

GEOMETRY
Dip (degrees)	15
Dip direction	W
Sense of slip	thrust
Rupture top (km)	7
Rupture bottom (km)	10
Rake (degrees)	90
Length (km)	17

MODEL VALUES
Slip Rate	1.5
Probability of activity	1
	ELLSWORTH	HANKS
Minimum magnitude	n/a	n/a
Maximum magnitude	6.40	6.20
b-value	n/a	n/a

Fault Model	Deformation Model	Char Rate¹	GR-a-value¹	Weight
Stitched	2.1	1.59e-03 / 3.17e-03	NA / NA	0.50
UnStitched	2.1	1.59e-03 / 3.17e-03	NA / NA	0.50
Stitched	2.4	1.59e-03 / 3.17e-03	NA / NA	0.50
UnStitched	2.4	1.59e-03 / 3.17e-03	NA / NA	0.50

¹ 1^st Value is based on Ellsworth relation and 2^nd value is based on Hanks and Bakun relation

Comments
Slip rate and sections from WGNCEP (1996) and Wakabayshi and Smith (1994).

Selected References
Working Group on Northern California Earthquake Potential (WGNCEP), 1996, Database of potential sources for earthquakes larger than magnitude 6 in northern California: U.S. Geological Survey Open-File Report 96-705, 40 p. Wakabayashi, J., and Smith, D.L., 1994, Evaluation of recurrence intervals, characteristic earthquakes, and slip rates associated with thrusting along the Coast Range-Central Valley geomorphic boundary, California: Bulletin of the Seismological Society of America, v. 84, p. 1960–1970.

Selected References

Working Group on Northern California Earthquake Potential (WGNCEP), 1996, Database of potential sources for earthquakes larger than magnitude 6 in northern California: U.S. Geological Survey Open-File Report 96-705, 40 p.
Wakabayashi, J., and Smith, D.L., 1994, Evaluation of recurrence intervals, characteristic earthquakes, and slip rates associated with thrusting along the Coast Range-Central Valley geomorphic boundary, California: Bulletin of the Seismological Society of America, v. 84, p. 1960–1970.