Accession Number:

ADA254716

Title:

Nonreciprocity of Long-range Reverberation in Wedged Continental Shelf

Descriptive Note:

Corporate Author:

GEORGIA INST OF TECH ATLANTA SCHOOL OF MECHANICAL ENGINEERING

Report Date:

1992-08-25

Pagination or Media Count:

35.0

Abstract:

First we talk about the background of current research on long-range reverberation in shallow water. The problem seems to fall into a dilemmaendless loop with no way out. Second, we introduced an averaged angular power spectrum method for long-range reverberation in the Pekeris model to show how we could bypass such dilemma. Based on a resulted transformation relation between arbitrary angle dependence of bottom scattering and the range dependence of reverberation in shallow water, some experimental data on bottom scattering at small grazing angles and low frequencies will be given in the third part. In the last part, using the WKB approximation to the adiabatic normal mode theory, we extend the problem into wedged homogeneous shallow water. The result shows that the monostatic reverberation intensities, obtained at two terminals with different depths, would not be reciprocal.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE