Fault Information and Seismicity for the Portland Basin Deep Direct-Use Feasibility Study EQ_Magnitudes_12042018 (1).xlsx

Included in this dataset is a spreadsheet with the primary fault information used in the basin model, a spreadsheet with earthquake magnitude estimates, and a figure showing location of faults and microseismicity in the Portland Basin Included in this table is all of the faults in the Portland and Tualatin Basins with lengths from the Quaternary Fold and Fault Database, and depths calculated from focal mechanisms, obtained from the Pacific Northwest Seismic Network. Regressions from Wells and Coppersmith (1994) are used to estimate the maximum magnitude earthquake (for strike-slip and reverse faults) that would be generated if a rupture were to occur along the entire length of the fault. Minimum fault depths calculated from focal mechanisms are used to calculate fault area and a regression from Hanks and Bakken (2002) for all fault types is used to calculate another magnitude estimate.

Data and Resources

Metadata Source

Additional Info

Field Value
Citation Date 2018-05-10T00:00:00-06:00

Harvest Information

Original ID f0000002-58cc-4372-a567-000000001106
Index Date 2019-02-21T13:48:36-07:00
Original Format ISO-USGIN
Original Version 1.2


Name John Bershaw
Position primary contact
Organization Portland State University
Email bershaw@pdx.edu

Geographic Extent

North Bound 46.129796490417
South Bound 44.88720992512
East Bound -121.9028890625
West Bound -123.1222703125