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dc.contributor.authorFoote, Kenneth G.
dc.contributor.authorFrancis, David T. I.
dc.date.accessioned2008-10-09T14:40:57Z
dc.date.available2008-10-09T14:40:57Z
dc.date.issued2002-04
dc.identifier.citationJournal of the Acoustical Society of America 111 (2002): 1644-1654en
dc.identifier.urihttp://hdl.handle.net/1912/2475
dc.descriptionAuthor Posting. © Acoustical Society of America , 2008. 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 111 (2002): 1644-1654, doi:10.1121/1.1458939.en
dc.description.abstractTo establish the validity of the boundary-element method (BEM) for modeling scattering by swimbladder-bearing fish, the BEM is exercised in several ways. In a computation of backscattering by a 50-mm-diam spherical void in sea water at the four frequencies 38.1, 49.6, 68.4, and 120.4 kHz, agreement with the analytical solution is excellent. In computations of target strength as a function of tilt angle for each of 15 surface-adapted gadoids for which the swimbladders were earlier mapped, BEM results are in close agreement with Kirchhoff-approximation-model results at each of the same four frequencies. When averaged with respect to various tilt angle distributions and combined by regression analysis, the two models yield similar results. Comparisons with corresponding values derived from measured target strength functions of the same 15 gadoid specimens are fair, especially for the tilt angle distribution with the greatest standard deviation, namely 16°.en
dc.description.sponsorshipThis work began with sponsorship by the European Commission through its RTD-program, Contract No. MAS3-CT95-0031 (BASS).en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.relation.urihttps://doi.org/10.1121/1.1458939
dc.subjectUnderwater sounden
dc.subjectUltrasonic scatteringen
dc.subjectBackscatteren
dc.subjectBioacousticsen
dc.subjectBoundary-elements methodsen
dc.subjectAcoustic intensity measurementen
dc.subjectAcoustic fielden
dc.subjectSeawateren
dc.titleComparing Kirchhoff-approximation and boundary-element models for computing gadoid target strengthsen
dc.typeArticleen
dc.identifier.doi10.1121/1.1458939


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