Two methods for the numerical calculation of acoustic normal modes in the ocean.
Evans, Kirk Eden.
Jung, Glenn H.
Coppens, Alan B.
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Three computer programs were written to find the eigenvalues and eigenfunctions of acoustic normal modes in the ocean. The programs used two different methods: an iterative finite difference scheme, and a method based upon the WKB approximation of quantum mechanics. The methods assume a flat fluid bottom and are designed for any arbitrary sound speed profile. While the results of both the finite difference and the WKB methods agreed, the WKB method proved faster.
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