Hypotheses on the exploitation of bubble acoustics by cetaceans
Leighton, Timothy, Finfer, Daniel and White, Paul (2007) Hypotheses on the exploitation of bubble acoustics by cetaceans. Journal of the Acoustical Society of America, 121, (5), p.3039. (doi:10.1121/1.2932973 ).
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Man-made sonar does not operate well in bubbly water, and yet cetaceans not only function effectively in shallow coastal waters,
but also at times generate large bubble fields to assist with catching prey. This paper outlines the challenges faced by cetaceans in
using acoustics in such environments, and proposes acoustical techniques which would work. The validity of such proposed acoustical
solutions is explored through theory, simulation, and experimentation. The scenarios in question relate to the circular and spiral bubble
nets generated to trap prey by humpback whales, and solutions to difficulties associated with echolocation by dolphins and porpoises
in bubbly water. Whether the solutions are exploited by cetaceans is uncertain, but their efficacy in test tanks and implications for
man-made sonar are demonstrated.
|Additional Information:||Program abstract of the 153rd meeting of the acoustical society of America - invited paper|
|Subjects:||Q Science > QC Physics
Q Science > QH Natural history
T Technology > TA Engineering (General). Civil engineering (General)
|Divisions:||University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Fluid Dynamics and Acoustics
|Date Deposited:||06 Jul 2007|
|Last Modified:||28 Sep 2015 08:28|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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