2008 National Seismic Hazard Maps-Fault parameters
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Fault Name State
North Tahoe California
GEOMETRY
Dip (degrees) 50
Dip direction E
Sense of slip normal
Rupture top (km) 0
Rupture bottom (km) 13
Rake (degrees) -90
Length (km) 20
MODEL VALUES
Slip Rate 0.4
Probability of activity 1
  ELLSWORTH HANKS
Minimum magnitude 6.5 6.5
Maximum magnitude 6.70 6.50
b-value 0.8 0.8
Fault Model Deformation
Model
Char Rate1 GR-a-value1 Weight
Stitched 2.1 3.06e-04 / 6.11e-04 1.614 / NA 0.50
UnStitched 2.1 3.06e-04 / 6.11e-04 1.614 / NA 0.50
Stitched 2.4 3.06e-04 / 6.11e-04 1.614 / NA 0.50
UnStitched 2.4 3.06e-04 / 6.11e-04 1.614 / NA 0.50
1 1st Value is based on Ellsworth relation and 2nd value is based on Hanks and Bakun relation
Comments
Minimum dip slip rate based on 21-25 m vertical offset of McKinney Bay debris complex thought to be 60 ka, and assumption of 60? fault dip (Kent and others, 2005). Dip changed to 50 degrees in 2007 based on recommendation of WSSPC for Basin and Range faults.