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dc.contributor.authorLee, Wu-Jung
dc.contributor.authorLavery, Andone C.
dc.contributor.authorStanton, Timothy K.
dc.date.accessioned2012-06-26T18:40:45Z
dc.date.available2012-06-26T18:40:45Z
dc.date.issued2012-06
dc.identifier.citationJournal of the Acoustical Society of America 131 (2012): 4461-4475en_US
dc.identifier.urihttp://hdl.handle.net/1912/5244
dc.descriptionAuthor Posting. © Acoustical Society of America, 2012. 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 131 (2012): 4461-4475, doi:10.1121/1.3701876.en_US
dc.description.abstractA controlled laboratory experiment of broadband acoustic backscattering from live squid (Loligo pealeii) was conducted using linear chirp signals (60–103 kHz) with data collected over the full 360° of orientation in the lateral plane, in <1° increments. The acoustic measurements were compared with an analytical prolate spheroid model and a three-dimensional numerical model with randomized squid shape, both based on the distorted-wave Born approximation formulation. The data were consistent with the hypothesized fluid-like scattering properties of squid. The contributions from the front and back interfaces of the squid were found to dominate the scattering at normal incidence, while the arms had a significant effect at other angles. The three-dimensional numerical model predictions out-performed the prolate spheroid model over a wide range of orientations. The predictions were found to be sensitive to the shape parameters, including the arms and the fins. Accurate predictions require setting these shape parameters to best describe the most probable squid shape for different applications. The understanding developed here serves as a basis for the accurate interpretation of in situ acoustic scattering measurements of squid.en_US
dc.description.sponsorshipFunding for this research was provided by the Taiwan Merit Scholarship (NSC-095-SAF-I-564-021-TMS) and the Academic Program Office at WHOI.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAcoustical Society of Americaen_US
dc.relation.urihttps://doi.org/10.1121/1.3701876
dc.subjectAcoustic signal processingen_US
dc.subjectAcoustic variables measurementen_US
dc.subjectAcoustic wave scatteringen_US
dc.subjectBackscatteren_US
dc.subjectNumerical analysisen_US
dc.titleOrientation dependence of broadband acoustic backscattering from live squiden_US
dc.typeArticleen_US
dc.identifier.doi10.1121/1.3701876


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