Further analysis of target strength measurements of Antarctic krill at 38 and 120 kHz : comparison with deformed cylinder model and inference of orientation distribution
MetadataShow full item record
KeywordBackscattering; Sound waves; Khz range; Acoustic measurements; Orientation; Zooplankton; Crustaceans
Data collected during the krill target strength experiment [J. Acoust. Soc. Am. 87, 16–24 (1990)] are examined in the light of a recent zooplankton scattering model where the elongated animals are modeled as deformed finite cylinders [J. Acoust. Soc. Am. 86, 691–705 (1989)]. Exercise of the model under assumption of an orientation distribution allows absolute predictions of target strength to be made at each frequency. By requiring that the difference between predicted and measured target strengths be a minimum in a least-squares sense, it is possible to infer the orientation distribution. This useful biological quantity was not obtainable in the previous analysis which involved the sphere scattering model.
Author Posting. © Acoustical Society of America, 1993. 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 93 (1993): 2985-2988, doi:10.1121/1.405818.
Showing items related by title, author, creator and subject.
Lee, Wu-Jung; Lavery, Andone C.; Stanton, Timothy K. (Acoustical Society of America, 2012-06)A 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 ...
Nickolaisen, Niel R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-09)In order to provide an accurate and efficient method of docking, station keeping, and navigation for the JASON remotely operated vehicle, an optical tracking method is investigated. The method needs to be accurate enough ...
Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba : implications for inverting zooplankton spectral Martin Traykovski, Linda V.; O'Driscoll, R. L.; McGehee, Duncan E. (Acoustical Society of America, 1998-10)Acoustic scattering experiments involving simultaneous acquisition of broadband echoes and video footage from several Antarctic krill were carried out to determine the effect of animal orientation on echo spectral structure. ...