GREEN-FUNCTION ANALYSIS OF A WAVE FIELD OVER ARBITRARY BATHYMETRY

Hitoshi Nishimura, Moon-Su Kwak

Abstract


A parabolic approximation of the mild slope equation was derived in terms of polar coordinates to describe waves diverging from a point source. Numerical solutions of the equation were used to extend the application of Green-function method to a wave field over arbitrary bathymetry. Validity of the equation obtained and usefulness of the numerical model were demon-strated through trial computations of wave diffraction, refraction and multiple reflection in model basins and in an actual harbor.

Keywords


bathymetry; Green-function; wave field



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