ABSTRACT

Tsunami Hazard Assessment in Oregon   [open pdf - 2MB]

"Tsunami hazard assessment in Oregon has proceeded by first completing a detailed inundation simulation of the Siletz Bay area where various model parameters were tested against estimates of inundation and run-up from prehistoric tsunami deposits. Reconnaissance-level inundation maps for the entire coastline were then produced to implement Senate Bill 379, which limits construction of critical and essential facilities in tsunami inundation zones. Detailed simulation based on three standardized Cascadia subduction zone earthquake sources have since been completed a Astoria, Warrenton, Gearhart, Seaside, Newport, Coos Bay, and Gold Beach. If funding is available, detailed inundation mapping will be accomplished for (in priority order, highest to lowest): (1) Alsea Bay (Waldport); (2) Rockaway Beach; (3) Sisuslaw estuary (Florence); (4) Nestucca Bay (Pacific City); (5) Coquille estuary (Bandon); and (6) Umpqua estuary (Winchester Bay- Reed sport). Each mapping project is done in close collaboration with the affected local governments. Maps of worst-case inundation are being completed for production of evacuation brochures in most communities, whether detailed inundation maps are available or not. The design and degree of conservatism employed in these evacuation maps is, again, worked out in close collaboration with local governments."

Author:
Publisher:
Date:
2001-08-07
Copyright:
Public Domain
Retrieved From:
Historical Archive Site for The National Tsunami Hazard Mitigation Program: http://nthmp-history.pmel.noaa.gov/
Format:
pdf
Media Type:
application/pdf
Source:
ITS 2001 Proceedings, Session 1, Number R-3
URL:
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