2008 National Seismic Hazard Maps

2008 National Seismic Hazard Maps-Fault parameters

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Fault Name	State
Goose Lake	Oregon

GEOMETRY
Dip (degrees)	50/40/60
Dip direction	W
Sense of slip	normal
Rupture top (km)	0
Rupture bottom (km)	9.5
Rake (degrees)	-90
Length (km)	60

MODEL VALUES
Probability of activity	1
Minimum magnitude	6.5
Maximum magnitude	7.02
b-value	0.8

Assigned Dip	Fault-Parallel Slip Rate	Width	Annual Rate	a-value	Branch Weight
40	0.16	14.8	1.13e-04	1.194	0.2
50	0.13	12.4	6.25e-01	0.625	0.6
60	0.12	11.0	6.25e-05	0.935	0.2

Comments
Assigned vertical slip rate based an estimate of 100 m of uplift and an estimated age of 1-2 Ma of possibly offset lacustrine features identified by Peterson and others (1980), Pezzopane (1993) and Pezzopane and Weldon (1993). Dip of fault changed to 50? based on redefined regional default value (Lund, 2006).

Selected References
Pezzopane, S.K., and Weldon, R.J., II, 1993, Tectonic role of active faulting in central Oregon: Tectonics, v. 12, p. 1140-1169. Pezzopane, S.K., 1993, Active faults and earthquake ground motions in Oregon: Eugene, Oregon, University of Oregon, unpublished Ph.D. dissertation, 208 p. Peterson, N.V., Brown, D.E., and McLean, G.D., 1980, Preliminary geology and geothermal resource potential of the Lakeview Area, Oregon: State of Oregon, Department of Geology and Mineral Industries Open-File Report O-80-9, 108 p., 2 pls., scale 1:62,500. 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, ugspub.nr.utah.gov/publications/open_file_reports/OFR-477.pdf.

Selected References

Pezzopane, S.K., and Weldon, R.J., II, 1993, Tectonic role of active faulting in central Oregon: Tectonics, v. 12, p. 1140-1169.
Pezzopane, S.K., 1993, Active faults and earthquake ground motions in Oregon: Eugene, Oregon, University of Oregon, unpublished Ph.D. dissertation, 208 p.
Peterson, N.V., Brown, D.E., and McLean, G.D., 1980, Preliminary geology and geothermal resource potential of the Lakeview Area, Oregon: State of Oregon, Department of Geology and Mineral Industries Open-File Report O-80-9, 108 p., 2 pls., scale 1:62,500.
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, ugspub.nr.utah.gov/publications/open_file_reports/OFR-477.pdf.