Three-dimensional scattering from the ocean surface using finite elements

Scattering from the ocean surface is a major parameter in propagation, reverberation, and coherence length models for shallow water waveguides. However, there are few models that quantify the effects of out-of-plane scattering at the ocean surface. In this work, a finite element model is used to qua...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2010-10, Vol.128 (4_Supplement), p.2326-2326
Main Authors: Joshi, Sumedh M., Isakson, Marcia J.
Format: Article
Language:English
Online Access:Get full text
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Summary:Scattering from the ocean surface is a major parameter in propagation, reverberation, and coherence length models for shallow water waveguides. However, there are few models that quantify the effects of out-of-plane scattering at the ocean surface. In this work, a finite element model is used to quantify the effects of out of plane scattering by comparing 2-D models to those in three dimensions for given realizations of the ocean surface. The ocean surface roughness is described by an ocean surface spatial spectrum and the scattering of a Gaussian tapered plane wave is considered. Results for several different ocean surfaces are compared to the Kirchhoff approximation to determine its range of validity. [Work sponsored by the Office of Naval Research, Ocean Acoustics.]
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3508211