Frequency dependence and intensity fluctuations due to shallow water internal waves

Mohsen Badiey, Boris G. Katsnelson, James F. Lynch, Serguey Pereselkov

Research output: Contribution to journalArticlepeer-review


A theory and experimental results for sound propagation through an anisotropic shallow water environment are presented to examine the frequency dependence of the scintillation index in the presence of internal waves. The theory of horizontal rays and vertical modes is used to establish the azimutal and frequency behavior of the sound intensity fluctuations, specifically for shallow water broadband acoustic signals propagating through internal waves. This theory is then used to examine the frequency dependent, anisotropic acoustic field measured during the SWARM'95 experiment. The frequency dependent modal scintillation index is described for the frequency range of 30-200 Hz on the New Jersey continental shelf.

Original languageEnglish
Pages (from-to)747-760
Number of pages14
JournalJournal of the Acoustical Society of America
Issue number2
StatePublished - 2007
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the Ocean Acoustics Program (321 OA) of the Office of Naval Research (ONR Grant No. N00014-01-1-0114 to UD and N00014-04-10146 to WHOI) and by the Russian Foundation for Basic Research (RFBR Grant No. 06-05-64853-a). Funding from Delaware Sea Grant program was provided to support graduate students at the University of Delaware.

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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