Airborne hunt for faults in the Portland-Vancouver area

Richard J. Blakely; Ray E. Wells; Thomas S. Yelin; Peter H. Stauffer; James W. Hendley

doi:10.3133/fs10596

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Airborne hunt for faults in the Portland-Vancouver area

Richard J. Blakely·Ray E. Wells·Thomas S. Yelin·Peter H. Stauffer·James W. Hendley

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Abstract

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.

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Richard J. Blakely, Ray E. Wells, Thomas S. Yelin, Peter H. Stauffer, James W. Hendley. 1996. Airborne hunt for faults in the Portland-Vancouver area. https://doi.org/10.3133/fs10596

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