Accession Number:

ADA094984

Title:

Propagation of Sound in a Fast Bottom Underlying a Wedge-Shaped Medium.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1980-09-01

Pagination or Media Count:

83.0

Abstract:

The pressure and phase distribution of sound in a fast fluid medium underlying a tapered fluid medium was modeled using a Greens function approach. The model predicted well-defined beams in the bottom, with apparent interference effects strongly evident for cases at a distance from the wedge interface. The effects of attenuation on the patterns were studied. A simple expression for determining the beam depression angle as a function of the wedge angle, the sound speed ratio, and the density ratio was derived. Comparisons with laboratory measurements were made.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE