2008 National Seismic Hazard Maps - Fault Parameters

2007 National Seismic Hazard Maps-Fault parameters
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Fault Name State
Aubrey fault zone Arizona
MODEL VALUES
Slip rate (vertical or horizontal in mm/yr) 0.018
Probability of activity 1
Minimum magnitude 6.5
Maximum magnitude 7.18
FAULT GEOMETRY
Dip (degrees) 50/40/60
Dip direction W
Sense of slip normal
Rupture top (km) 0
Rupture bottom (km) 15
Rake (degrees) -90
Length (km) 65
Assigned Dip Fault Parallel Slip Rate Width Characteristic Magnitude Characteristic Rate Weight
40 0.03 23.3 7.18 1.92E-05 0.2
50 0.02 19.6 7.18 1.35E-05 0.6
60 0.02 17.3 7.18 1.06E-05 0.2
Comments
A low preferred vertical slip rate is assigned based on about 5 m of displacement of an upper to middle Pleistocene alluvial fan (Menges and Pearthree, 1983). Dip of fault changed to 50° based on redefined regional default value (Lund, 2006).
Selected References
Menges, C.M., and Pearthree, P.A., 1983, Map of neotectonic (latest Pliocene-Quaternary) deformation in Arizona: Arizona Bureau of Geology Mineral Technology Open-File Report 83-22, 48 p., scale 1:500,000.
Lund, W.R., ed., 2006, Basin and Range Province Earthquake Working Group seismic-hazard recommendations to the U.S. Geological Survey National Seismic Hazard Mapping Program: Utah Geological Survey Open-File Report 477, 23 p.