Nonlinear scattering of acoustic waves by natural and artificially generated subsurface bubble layers in sea

Lev A. Ostrovsky, Alexander M. Sutin, Irina A. Soustova, Alexander L. Matveyev, Andrey I. Potapov, Zigmund Kluzek

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The paper describes nonlinear effects due to a biharmonic acoustic signal scattering from air bubbles in the sea. The results of field experiments in a shallow sea are presented. Two waves radiated at frequencies 30 and 31-37 kHz generated backscattered signals at sum and difference frequencies in a bubble layer. A motorboat propeller was used to generate bubbles with different concentrations at different times, up to the return to the natural subsurface layer. Theoretical consideration is given for these effects. The experimental data are in a reasonably good agreement with theoretical predictions.

Original languageEnglish
Pages (from-to)741-749
Number of pages9
JournalJournal of the Acoustical Society of America
Volume113
Issue number2
DOIs
StatePublished - 1 Feb 2003

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