2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Trinidad California
GEOMETRY
Dip (degrees) 35
Dip direction NE
Sense of slip thrust
Rupture top (km) 0
Rupture bottom (km) 13
Rake (degrees) 90
Length (km) 88
MODEL VALUES
Slip Rate 0.7
Probability of activity 1
  ELLSWORTH HANKS
Minimum magnitude 6.5 6.5
Maximum magnitude 7.50 7.50
b-value 0.8 0.8
Fault Model Deformation
Model
Char Rate1 GR-a-value1 Weight
Stitched 2.1 1.90e-04 / 1.90e-04 1.583 / 1.583 0.50
UnStitched 2.1 1.90e-04 / 1.90e-04 1.583 / 1.583 0.50
Stitched 2.4 1.90e-04 / 1.90e-04 1.583 / 1.583 0.50
UnStitched 2.4 1.90e-04 / 1.90e-04 1.583 / 1.583 0.50
1 1st Value is based on Ellsworth relation and 2nd value is based on Hanks and Bakun relation
Comments
Slip rate based on recalulation of slip rate reported by Carver and Burke (1992), with assumption that lowest terrace age is 80 ka. Dip slip rate includes horizontal shortening rate from Trinidad anticline, resolved for 35 degree dipping fault (P. McCrory, personal comm., 1996).