mirage

Measurement and modeling of three-dimensional sound intensity variations due to shallow-water internal waves

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dc.contributor.author Badiey, Mohsen
dc.contributor.author Katsnelson, Boris G.
dc.contributor.author Lynch, James F.
dc.contributor.author Pereselkov, Serguey
dc.contributor.author Siegmann, William L.
dc.date.accessioned 2008-10-09T15:02:45Z
dc.date.available 2008-10-09T15:02:45Z
dc.date.issued 2005-02
dc.identifier.citation Journal of the Acoustical Society of America 117 (2005): 613-625 en
dc.identifier.uri http://hdl.handle.net/1912/2476
dc.description Author Posting. © Acoustical Society of America, 2005. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 117 (2005): 613-625, doi:10.1121/1.1828571. en
dc.description.abstract Broadband acoustic data (30–160 Hz) from the SWARM'95 experiment are analyzed to investigate acoustic signal variability in the presence of ocean internal waves. Temporal variations in the intensity of the received signals were observed over periods of 10 to 15 min. These fluctuations are synchronous in depth and are dependent upon the water column variability. They can be explained by significant horizontal refraction taking place when the orientation of the acoustic track is nearly parallel to the fronts of the internal waves. Analyses based on the equations of vertical modes and horizontal rays and on a parabolic equation in the horizontal plane are carried out and show interesting frequency-dependent behavior of the intensity. Good agreement is obtained between theoretical calculations and experimental data. en
dc.description.sponsorship This work was supported by the Ocean Acoustics Program at the Office of Naval Research (ONR Grants N00014-01-1-0114 to U.D., and N00014-04-1-0016 to R.P.I.) and by the Russian Foundation For Basic Research (RFBR Grant 03-05-64568-a). en
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Acoustical Society of America en
dc.relation.uri http://dx.doi.org/10.1121/1.1828571
dc.subject Ocean waves en
dc.subject Underwater sound en
dc.subject Parabolic equations en
dc.subject Acoustic intensity en
dc.subject Acoustic wave refraction en
dc.title Measurement and modeling of three-dimensional sound intensity variations due to shallow-water internal waves en
dc.type Article en
dc.identifier.doi 10.1121/1.1828571


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