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Intensity fluctuations of midfrequency sound signals passing through moving nonlinear internal waves.

Authors
  • Katsnelson, Boris
  • Grigorev, Valery
  • Lynch, James F
Type
Published Article
Journal
The Journal of the Acoustical Society of America
Publication Date
Sep 01, 2008
Volume
124
Issue
3
Identifiers
DOI: 10.1121/1.2968294
PMID: 19045566
Source
Medline
License
Unknown

Abstract

The fluctuations of intensity of broadband pulses in the midfrequency range (2-4.5 kHz) propagating in shallow water in the presence of intense internal waves moving approximately along the acoustic track are considered. These pulses were received by two separate single hydrophones placed at different distances from the source (approximately 4 and approximately 12 km) and in different directions. It is shown that the frequency spectra of the fluctuations for these hydrophones have different predominating frequencies corresponding with the directions of the acoustic track. Comparisons of experimental results with theoretical estimates demonstrate good consistency.

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