2008 National Seismic Hazard Maps

2008 National Seismic Hazard Maps-Fault parameters

New Search

Fault Name	State
Western Toiyabe Range fault zone	Nevada

GEOMETRY
Dip (degrees)	50/40/60
Dip direction	NW
Sense of slip	normal
Rupture top (km)	0
Rupture bottom (km)	15
Rake (degrees)	-90
Length (km)	139

MODEL VALUES
Probability of activity	1
Minimum magnitude	n/a
Maximum magnitude	n/a
b-value	n/a

Assigned Dip	Fault-Parallel Slip Rate	Width	a-value	Branch Weight
40	0.31	23.3	n/a	0.2
50	0.26	19.6	n/a	0.6
60	0.23	17.3	n/a	0.2

Comments
The Quaternary fault and fold database for the U.S. shows that this fault was assigned to the 0.2-1.0 mm/yr slip-rate category, based on the magnitude of the slip rate assigned by dePolo (1998) of 0.488 mm/yr. Thus the assigned slip rate used here is appropriately increased. The characteristic magnitude for this fault is fixed at M7.5 even though the length of the fault would permit a larger earthquake.

Comments

The Quaternary fault and fold database for the U.S. shows that this fault was assigned to the 0.2-1.0 mm/yr slip-rate category, based on the magnitude of the slip rate assigned by dePolo (1998) of 0.488 mm/yr. Thus the assigned slip rate used here is appropriately increased. The characteristic magnitude for this fault is fixed at M7.5 even though the length of the fault would permit a larger earthquake.