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Airborne hunt for faults in the Portland-Vancouver area

October 1, 1996

Geologic hazards in the Portland-Vancouver area include faults entirely hidden by river sediments, vegetation, and urban development. A recent aerial geophysical survey revealed patterns in the Earth's magnetic field that confirm the existence of a previously suspected fault running through Portland. It also indicated that this fault may pose a significant seismic threat. This discovery has enabled the residents of the populous area to better prepare for future earthquakes.

Publication Year 1996
Title Airborne hunt for faults in the Portland-Vancouver area
DOI 10.3133/fs10596
Authors Richard J. Blakely, Ray E. Wells, Thomas S. Yelin, Peter H. Stauffer, James W. Hendley
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 105-96
Index ID fs10596
Record Source USGS Publications Warehouse
USGS Organization Earthquake Science Center