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Tsunami damage at Seward, Alaska

1964 (approx.)

Detailed Description

Damage from seismic sea wave aka Tsunami in Seward, Alaska. The waves came in from the sea via Resurrection Bay in the background. A series of large tsunami waves were generated by sudden uplift of the sea floor beneath the continental shelf off south-central Alaska during the earthquake. The uplift "mounded" the overlying water, initiating a vertical oscillation of the water surface that dissipated as a series of radiating surface waves that struck the Alaskan coast at intervals of about 3/4 to 1 1/2 hours for about 10 hours after the earthquake.


Public Domain.