Index Catalog // ScholarsArchive@OSU

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: Acoustic backscattering strength is often used as an index of biomass; however, the relationship between these variables has not been directly validated. Relationships were investigated between acoustic cross section at 200 kHz, measured as part of a previous study, and measured values of length, biovolume, dry weight, ash-free dry weight,...
Resource Type:: Article
Full Text:: distribution of the populations being studied. ©2002 Acoustical Society of America. @DOI: 10.1121/1.1470505

Creator:: Benoit-Bird, Kelly J., Au, Whitlow W. L., and Kastelein, Ronald A.
Abstract:: The hypothesis that sounds produced by odontocetes can debilitate fish was examined. The effects of simulated odontocete pulsed signals on three species of fish commonly preyed on by odontocetes were examined, exposing three individuals of each species as well as groups of four fish to a high-frequency click of a...
Resource Type:: Article
Full Text:: can disorient or “stun” prey cannot be supported. © 2006 Acoustical Society of America. �DOI: 10.1121

Creator:: Au, Whitlow W. L., Benoit-Bird, Kelly J., and Kastelein, Ronald A.
Abstract:: The target strength as a function of aspect angle were measured for four species of fish using dolphin-like and porpoise-like echolocation signals. The polar diagram of target strength values measured from an energy flux density perspective showed considerably less fluctuation with azimuth than would a pure tone pulse. Using detection...
Resource Type:: Article
Full Text:: dolphin echolocation signals. © 2007 Acoustical Society of America. �DOI: 10.1121/1.2734487� PACS number

Creator:: Au, Whitlow W. L., Giorli, Giacomo, Chen, Jessica, Copeland, Adrienne, Lammers, Marc, Richlen, Michael, Jarvis, Susan, Morrissey, Ronald, Moretti, David, and Klinck, Holger
Abstract:: Remote autonomous ecological acoustic recorders (EARs) were deployed in deep waters at five locations around the island of Kauai and one in waters off Ni'ihau in the main Hawaiian island chain. The EARs were moored to the bottom at depths between 400 and 800 m. The data acquisition sampling rate...
Resource Type:: Article
Full Text:: 2013 Acoustical Society of America. [http://dx.doi.org/10.1121/1.4798360] PACS number(s): 43.80.Ka

Creator:: Au, Whitlow W. L., Branstetter, Brian K., Benoit-Bird, Kelly, and Kastelein, Ronald A.
Abstract:: The biosonar system of dolphins and porpoises has been studied for about 5 decades and much has been learned [Au,W.W. L. )1993). The Sonar of Dolphins (Springer, New York)]. Most experiments have involved human-made targets; little is known about odontocetes’ echolocation of prey. To address this issue, acoustic backscatter from...
Resource Type:: Article
Full Text:: aspect angle. © 2009 Acoustical Society of America. �DOI: 10.1121/1.3147497� PACS number�s�: 43.80.Ka

Creator:: Au, Whitlow W. L. and Benoit-Bird, Kelly J.
Abstract:: The characteristics of acoustic echoes from six species of deep-dwelling (up to 400 m) Hawaiian Lujanid snappers were determined by backscatter measurements at the surface. A broadband linear frequency-modulated signal and a short dolphinlike sonar signal were used as the incident signals. The fish were anesthetized and attached to a...
Resource Type:: Article
Full Text:: distinguishable between species. ©2003 Acoustical Society of America. @DOI: 10.1121/1.1614257# PACS numbers

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: Sonar techniques were used to quantitatively observe foraging predators and their prey simultaneously in three dimensions. Spinner dolphins foraged at night in highly coordinated groups of 16–28 individuals using strict four-dimensional patterns to increase prey density by up to 200 times. Herding exploited the prey’s own avoidance behavior to achieve...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: A 200-kHz echosounder modified to digitize the envelope of the received echoes directly into a computer was used to measure the ex situ target strength (TS) of live animals from the Hawaiian mesopelagic boundary community as a function of animal size, tilt and roll angle, and biological classification. Dorsal aspect...
Resource Type:: Article
Full Text:: . @DOI: 10.1121/1.1382620# PACS numbers: 43.30.Sf, 43.30.Ft, 43.20.Fn@DLB# a c p e d- i h t ity o an

Creator:: Benoit-Bird, Kelly J. and Au, Whitlow W. L.
Abstract:: A broadband sonar system and digital camera with strobe lights were mounted on a vertically profiling frame with a depth sensor. The echo strengths and densities of animals within individual mesopelagic boundary community patches were investigated as a function of depth. Time and distance from shore were also investigated. Simultaneous...
Resource Type:: Article
Full Text:: America. @DOI: 10.1121/1.1612484# PACS numbers: 43.30.Sf, 43.30.Ft, 43.30.Vh@WMC# a e m he m b at d

Creator:: Benoit-Bird, Kelly J., Gilly, William F., and Au, Whitlow W. L.
Abstract:: This study presents the first target strength measurements of Dosidicus gigas, a large squid that is a key predator, a significant prey, and the target of an important fishery. Target strength of live, tethered squid was related to mantle length with values standardized to the length squared of −62.0, −67.4,...
Resource Type:: Article
Full Text:: America. �DOI: 10.1121/1.2832327� PACS number�s�: 43.30.Sf, 43.30.Ft, 43.20.Fn �KF� Pages: 1318–1328 I

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