An investigation was undertaken to establish frequency-of-occurrence curves for tsunami-wave elevations near the shoreline for the Hawaiian Islands. A hybrid finite element numerical model was used to supplement historical data in determining the ten largest tsunami elevations from 1837 to 1976 at locations along the coastline of the islands. The numerical model was verified by comparing tide gage recordings at various locations in the Hawaiian Islands during the 1960 and 1964 tsunamis with numerical model calculations. Frequency-of-occurrence curves were established using data from the ten largest tsunami-wave elevations along the Hawaiian coastline. Figures and the table presented in the report can be used to calculate tsunami elevations 200 ft shoreward of the coastline for frequencies of occurrence as high as 1-in-10 years for the entire coastline of the Hawaiian Islands (except the coast of the uninhabited U. S. Navy target island of Kahoolawe) . Runup nearly equals tsunami elevation at the shoreline for some of the coastline of the islands, but not for areas where flooding is substantial. A recommendation is given for development of a method to calculate land flooding during a tsunami.
Tsunami-Wave Elevation Frequency of Occurrence for the Hawaiian Islands
Technical Report ; H-77-16
1977
11533805
Report
Electronic Resource
English
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