2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Point Reyes California
GEOMETRY
Dip (degrees) 50
Dip direction NE
Sense of slip reverse
Rupture top (km) 0
Rupture bottom (km) 9
Rake (degrees) 90
Length (km) 47
MODEL VALUES
Slip Rate 0.3
Probability of activity 1
  ELLSWORTH HANKS
Minimum magnitude 6.5 6.5
Maximum magnitude 6.90 6.70
b-value 0.8 0.8
Fault Model Deformation
Model
Char Rate1 GR-a-value1 Weight
Stitched 2.1 1.80e-04 / 3.58e-04 1.305 / 1.682 0.50
UnStitched 2.1 1.80e-04 / 3.58e-04 1.305 / 1.682 0.50
Stitched 2.4 1.80e-04 / 3.58e-04 1.305 / 1.682 0.50
UnStitched 2.4 1.80e-04 / 3.58e-04 1.305 / 1.682 0.50
1 1st Value is based on Ellsworth relation and 2nd value is based on Hanks and Bakun relation
Comments
Poorly constrained long term (post-Miocene) slip rate based on vertical offset of crystalline basement (McCulloch, 1987).