2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
North Frontal (West) California
GEOMETRY
Dip (degrees) 49
Dip direction S
Sense of slip reverse
Rupture top (km) 0
Rupture bottom (km) 16
Rake (degrees) 90
Length (km) 50
MODEL VALUES
Slip Rate 1
Probability of activity 1
  ELLSWORTH HANKS
Minimum magnitude 6.5 6.5
Maximum magnitude 7.20 7.10
b-value 0.8 0.8
Fault Model Deformation
Model
Char Rate1 GR-a-value1 Weight
Stitched 2.1 3.98e-04 / 5.62e-04 1.737 / 1.845 0.50
UnStitched 2.1 3.98e-04 / 5.62e-04 1.737 / 1.845 0.50
Stitched 2.4 3.98e-04 / 5.62e-04 1.737 / 1.845 0.50
UnStitched 2.4 3.98e-04 / 5.62e-04 1.737 / 1.845 0.50
1 1st Value is based on Ellsworth relation and 2nd value is based on Hanks and Bakun relation
Comments
Reported slip rate of 1.2 mm/yr for Sky High Ranch fault, a RLSS segment of fault zone (Meisling, 1984). Other reported slip rates range between 0.1 and 1.3 mm/yr.