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Confirmation and calibration of computer modeling of tsunamis produced by Augustine volcano, Alaska

Science of Tsunami Hazards
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Abstract

Numerical modeling has been used to calculate the characteristics of a tsunami generated by a landslide into Cook Inlet from Augustine Volcano. The modeling predicts travel times of ca. 50-75 minutes to the nearest populated areas, and indicates that significant wave amplification occurs near Mt. Iliamna on the western side of Cook Inlet, and near the Nanwelak and the Homer-Anchor Point areas on the east side of Cook Inlet. Augustine volcano last produced a tsunami during an eruption in 1883, and field evidence of the extent and height of the 1883 tsunamis can be used to test and constrain the results of the computer modeling. Tsunami deposits on Augustine Island indicate waves near the landslide source were more than 19 m high, while 1883 tsunami deposits in distal sites record waves 6-8 m high. Paleotsunami deposits were found at sites along the coast near Mt. Iliamna, Nanwelak, and Homer, consistent with numerical modeling indicating significant tsunami wave amplification occurs in these areas. 

Suggested Citation

Beget, J.E., Kowalik, Z., 2006, Confirmation and calibration of computer modeling of tsunamis produced by Augustine volcano, Alaska: Science of Tsunami Hazards, v. 24, no. 4, p. 257-266.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Confirmation and calibration of computer modeling of tsunamis produced by Augustine volcano, Alaska
Series title Science of Tsunami Hazards
Volume 24
Issue 4
Year Published 2006
Language English
Publisher Tsunami Society International
Contributing office(s) Volcano Hazards Program
Description 10 p.
First page 257
Last page 266
Country United States
State Alaska
Other Geospatial Augustine volcano
Online Only (Y/N) N
Additional Online Files (Y/N) N
Additional publication details