Title :
Acoustic wave propagation in horizontally variable media
Author :
Clark, Cathy Ann
Author_Institution :
Naval Undersea Warfare Center, Newport, RI, USA
Abstract :
An overview of the multipath expansion method of solving the Helmholtz wave equation to describe the underwater sound field for a fixed point source in a plane multilayered medium is presented. The approach is then extended to account for horizontal variations in bottom depth, bottom type, and sound speed in the stationary phase approximation. Comparisons of model results to a limited number of measured data sets and standard propagation codes are presented.
Keywords :
Helmholtz equations; underwater acoustic propagation; Helmholtz wave equation; acoustic wave propagation; fixed point source; horizontally variable media; multipath expansion method; plane multilayered medium; standard propagation codes; stationary phase approximation; underwater sound field; underwater sound propagation; Acoustic propagation; Acoustic waves; Code standards; Frequency; Measurement standards; Oceans; Partial differential equations; Propagation losses; Sea measurements; Underwater acoustics; Acoustics; multipath expansion; stationary phase; underwater sound propagation; wave equation;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2004.834167
