Tsunami Predictions for the Coast of Alaska

by Peter L. Crawford, US Army Engineer Waterways, Experiment Station, Vicksburg, MS, USA,

Document Type: Proceeding Paper

Part of: Coastal Zone '87


The 100- and 500-year combined tsunami and tide elevations are predicted along the southern coast of Alaska. Because there is little historical data of tsunami occurrence in the area, a history of tsunami activity was synthesized. A record of tsunami elevation time-histories was produced for sites along the coast. The probability of occurrence of each tsunami in the synthetic record was determined by considering historical data of tsunami occurrence along the Aleutian trench. Numerical methods were used to combine the effects of astronomical tides and tsunamis in order to determine the combined tsunami and tide elevations of the 100- and 500-year events.

Subject Headings: Tsunamis | Tides | Numerical methods | Numerical models | Water waves | Ocean waves | Mathematical models | Light rail transit | Alaska | United States

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