2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Spruce Mountain Ridge fault zone Nevada
GEOMETRY
Dip (degrees) 40/50/60
Dip direction W
Sense of slip normal
Rupture top (km) 0
Rupture bottom (km) 15
Rake (degrees) -90
Length (km) 33
MODEL VALUES
Probability of activity 1
Minimum magnitude 6.5
Maximum magnitude 6.83
b-value 0.8
Assigned Dip Fault-Parallel Slip Rate Width Annual Rate a-value Branch Weight
40 0.16 23.3 1.80e-04 1.227 0.2
50 0.13 19.6 1.27e-04 1.075 0.6
60 0.12 17.3 9.91e-05 0.969 0.2