Fault Information and Seismicity for the Portland Basin Deep Direct-Use Feasibility Study

Description

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

Resources

Name Format Description Link
EQ Magnitudes.xlsx XLS 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. Open resource
Fault Information.xlsx XLS Included in this table is all faults in the study area with information on dip, sense of motion, length, and depth with sources for this information. Open resource
Faulting and Microseismic Locations.pdf PDF This file is a figure of the Portland and Tualatin Basins with faults included in this study as well as microseismicity. Open resource

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