TSUNAMIS SOME LABORATORY AND FIELD OBSERVATIONS

Frederick Raichlen

Abstract


A unique laboratory facility to generate waves by impulsive movements of the bottom of a wave tank is described and examples of the wave forms which result are shown An analytical model is presented for the case of rapid bottom movements which describes, in a qualitative way, certain features of the experiments Marigrams from various field stations for the tsunamis from the Chilean earthquake of I960 and the Alaskan earthquake of 1964 have been analyzed using spectral analysis techniques to determine the harmonic components of these records Comparisons are made between the spectra of the two tsunamis at each of several locations.

Keywords


tsunami; field observation

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