Observation of sound focusing and defocusing due to propagating nonlinear internal waves

J. Luo, M. Badiey, E. A. Karjadi, B. Katsnelson, A. Tskhoidze, J. F. Lynch, J. N. Moum

Research output: Contribution to journalArticlepeer-review


Fluctuations of the low frequency sound field in the presence of an internal solitary wave packet during the Shallow Water '06 experiment are analyzed. Acoustic, environmental, and on-board ship radar image data were collected simultaneously before, during, and after a strong internal solitary wave packet passed through the acoustic track. Preliminary analysis of the acoustic wave temporal intensity fluctuations agrees with previously observed phenomena and the existing theory of the horizontal refraction mechanism, which causes focusing and defocusing when the acoustic track is nearly parallel to the front of the internal waves [J. Acoust. Soc. Am., 122(2), pp. 747-760 (2007)].

Original languageEnglish
Pages (from-to)EL66-EL72
JournalJournal of the Acoustical Society of America
Issue number3
StatePublished - 2008
Externally publishedYes

Bibliographical note

Funding Information:
The authors wish to thank all participants of the SW06 experiment, especially the scientific and ship personnel aboard the R/V S HARP and R/V O CEANUS . This research was supported by the Ocean Acoustic Program (321OA) of the Office of Naval Research through Grant No. N00014-07-1-0546.

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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