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dc.contributor.authorFrank, Scott D.  Concept link
dc.contributor.authorBadiey, Mohsen  Concept link
dc.contributor.authorLynch, James F.  Concept link
dc.contributor.authorSiegmann, William L.  Concept link
dc.date.accessioned2008-10-09T16:49:43Z
dc.date.available2008-10-09T16:49:43Z
dc.date.issued2005-08
dc.identifier.citationJournal of the Acoustical Society of America 118 (2005): 723-734en
dc.identifier.urihttps://hdl.handle.net/1912/2482
dc.descriptionAuthor 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 118 (2005): 723-734, doi:10.1121/1.1942428.en
dc.description.abstractThe 1995 SWARM experiment collected high quality environmental and acoustic data. One goal was to investigate nonlinear internal wave effects on acoustic signals. This study continues an investigation of broadband airgun data from the two southwest propagation tracks. One notable feature of the experiment is that a packet of nonlinear internal waves crossed these tracks at two different incidence angles. Observed variations for the lower angle track were modeled using two-dimensional parabolic equation calculations in a previous study. The higher incidence angle is close to critical for total internal reflection, suggesting that acoustic horizontal refraction occurs as nonlinear internal waves traverse this track. Three-dimensional adiabatic mode parabolic equation calculations reproduce principal features of observed acoustic intensity variations. The correspondence between data and simulation results provides strong evidence of the actual occurrence of horizontal refraction due to nonlinear internal waves.en
dc.description.sponsorshipThis work was supported by an ONR Ocean Acoustics Graduate Traineeship Award and by ONR grants to Rensselaer, the University of Delaware, and the Woods Hole Oceanographic Institution.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.relation.urihttps://doi.org/10.1121/1.1942428
dc.subjectAcoustic wave propagationen
dc.subjectAcoustic wave refractionen
dc.subjectAcoustic intensityen
dc.subjectNonlinear acousticsen
dc.subjectUnderwater sounden
dc.titleExperimental evidence of three-dimensional acoustic propagation caused by nonlinear internal wavesen
dc.typeArticleen
dc.identifier.doi10.1121/1.1942428


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