2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Los Osos California
GEOMETRY
Dip (degrees) 45
Dip direction SW
Sense of slip thrust
Rupture top (km) 0
Rupture bottom (km) 10
Rake (degrees) 90
Length (km) 44
MODEL VALUES
Slip Rate 0.5
Probability of activity 1
  ELLSWORTH HANKS
Minimum magnitude 6.5 6.5
Maximum magnitude 7.00 6.80
b-value 0.8 0.8
Fault Model Deformation
Model
Char Rate1 GR-a-value1 Weight
Stitched 2.1 2.39e-04 / 4.77e-04 1.443 / 1.742 0.50
UnStitched 2.1 2.39e-04 / 4.77e-04 1.443 / 1.742 0.50
Stitched 2.4 2.39e-04 / 4.77e-04 1.443 / 1.742 0.50
UnStitched 2.4 2.39e-04 / 4.77e-04 1.443 / 1.742 0.50
1 1st Value is based on Ellsworth relation and 2nd value is based on Hanks and Bakun relation
Comments
Poorly constrained late Quaternary slip rate based on uplift of marine terraces and assumed fault dip of 30-60 degrees (Lettis & Hall, 1994).