The intensity coherence function of time for partially saturated acoustic propagation through ocean internal waves

J. S. Gerber, S. M. Flatté

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

The intensity coherence function of time for partially saturated acoustic propagation through internal waves is calculated with a method that is improved over previous treatments. Two specific improvements are introduced: The usual expansion in (1/ΛΦ2) is carried out to a higher order, and then the terms of that expansion are calculated with a new perturbative method. The method is applied to propagation without a sound channel, for both phase-screen and continuous-medium cases. The validity of the new perturbative method is estimated by calculating the next order error terms. Accuracies at the few-percent level are found. The new analytic formulas are also corroborated with numerical integration. Finally, the method is applied to a specific ocean-acoustic experiment [Azores Fixed Acoustic Range (AFAR)]. In order to achieve good agreement with experiment it will be necessary to add an accurate treatment of the sound channel to the present perturbation method.

Original languageEnglish (US)
Pages (from-to)528-537
Number of pages10
JournalJournal of the Acoustical Society of America
Volume109
Issue number2
DOIs
StatePublished - Feb 21 2001

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