Calculations of run up due to seismic sea waves (tsunamis) of distant origin are made for 15 coastal communities within the State of California and 3 coastal communities within the State of Alaska. The values given are interpreted as being equaled or exceeded on the average of once per 100 or once per 500 years, whichever is indicated. The combined effects of astronomical tides and tsunamis are incorporated into the analysis as well as local resonance effects where judged significant. A complete discussion of the methodology is presented in Appendix A. Analysis of the error attributed to each of the various steps in the procedure results in an estimated maximum average error of about ±40 percent for the southern California communities and ±75 percent for the Alaskan communities. It is essential that these runup predictions be reviewed approximately every five years in the light of advancements in the theory of tsunami generation, propagation, and runup. Significant future developments should be incorporated into the predictions performed and flood insurance rates adjusted accordingly. _x000D_ _x000D_ NOTE: This file is large. Allow your browser several minutes to download the file.


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    Title :

    Type 16 Flood Insurance Study: Tsunami Predictions for Pacific Coastal Communities



    Published in:

    Publication date :

    1974


    Size :

    16142839


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :


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