### ASA 124th Meeting New Orleans 1992 October

## 4aPA7. Sound field in a horizontally stratified, moving medium.

**D. Keith Wilson
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*Dept. of Appl. Ocean Phys. and Eng., Woods Hole Oceanogr. Inst., Woods
Hole, MA 02543
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A numerical method for computing the sound field in a stratified, moving
medium is described. The method also applies to moving sources. As suggested by
Raspet et al. [J. Acoust. Soc. Am. 91, 498--500 (1992)], the wave equation is
Fourier transformed in both horizontal coordinates, and the solution in the
transformed space then is found using vertical finite elements. It is more
convenient to formulate the solution in terms of the velocity potential rather
than the acoustic pressure or velocity. The finite elements are determined
using a global matrix method similar to the well known SAFARI program.
Computational resources limit the maximal range of the solutions.