Show simple item record

dc.contributor.authorStanton, Timothy K.
dc.date.accessioned2008-10-21T14:40:51Z
dc.date.available2008-10-21T14:40:51Z
dc.date.issued2000-08
dc.identifier.citationJournal of the Acoustical Society of America 108 (2000): 551-555en
dc.identifier.urihttp://hdl.handle.net/1912/2516
dc.descriptionAuthor Posting. © Acoustical Society of America, 2000. 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 108 (2000): 551-555, doi:10.1121/1.429585.en
dc.description.abstractAcoustic scattering by the seafloor is sometimes influenced, if not dominated, by the presence of discrete volumetric objects such as shells. A series of measurements of target strength of a type of benthic shelled animal and associated scattering modeling have recently been completed (Stanton et al., "Acoustic scattering by benthic and planktonic shelled animals," J. Acoust. Soc. Am., this issue). The results of that study are used herein to estimate the scattering by the seafloor with a covering of shells at high acoustic frequencies. A simple formulation is derived that expresses the area scattering strength of the seafloor in terms of the average reduced target strength or material properties of the discrete scatterers and their packing factor (where the reduced target strength is the target strength normalized by the geometric cross section of the scatterers and the averaging is done over orientation and/or a narrow range of size or frequency). The formula shows that, to first order, the backscattering at high acoustic frequencies by a layer of shells (or other discrete bodies such as rocks) depends principally upon material properties of the objects and packing factor and is independent of size and acoustic frequency. Estimates of area scattering strength using this formula and measured values of the target strength of shelled bodies from Stanton et al. (this issue) are close to or consistent with observed area scattering strengths due to shell-covered seafloors published in other papers.en
dc.description.sponsorshipThis research was supported by the U.S. Office of Naval Research Grant No. N00014-95-1-0287.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.relation.urihttps://doi.org/10.1121/1.429585
dc.subjectUnderwater sounden
dc.subjectOceanographyen
dc.subjectAcoustic wave scatteringen
dc.subjectBackscatteren
dc.titleOn acoustic scattering by a shell-covered seaflooren
dc.typeArticleen
dc.identifier.doi10.1121/1.429585


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record