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Geomorphological and Geotechnical Issues Affecting the Seismic Slope Stability of the Duwamish River Delta, Port of Seattle, Washington

Robert E. Kayen1, Walter A. Barnhardt1 and Stephen P. Palmer2

1US Geological Survey, 345 Middlefield Rd., Menlo Park, CA, 94025
2Wash. Dept. of Natural Resources, Olympia, WA 98504

Reprinted from:
Optimizing Post-Earthquake Lifeline System Reliability
Proceedings of the Conference
American Society of Civil Engineers
Held August 12-14, 1999, Seattle, Washington
This abstract is reproduced by permission of the publisher, ASCE

ABSTRACT

Young Holocene deposits of the Duwamish River valley underlie a highly developed transportation-industrial corridor, extending from the City of Kent to the Elliott Bay Harbor Island marine terminal facilities. The deposits have been shaped by relative sea-level rise, but also by episodic volcanism and seismicity. A geologic and geotechnical investigation of these river-mouth deposits indicates high initial liquefaction susceptibility during earthquakes, and possibly the potential for unlimited-strain disintegrative flow failure of the delta front.

For more information about this paper or to view the entire article please contact Robert Kayen. To purchase the article please visit the ASCE Publications site.


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