| Beaked whale and dolphin tracking using a multichannel autonomous acoustic recorder. | |
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MedLine Citation:
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PMID: 22280580 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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To track highly directional echolocation clicks from odontocetes, passive hydrophone arrays with small apertures can be used to receive the same high frequency click on each sensor. A four-hydrophone small-aperture array was coupled to an autonomous acoustic recorder and used for long-term tracking of high-frequency odontocete sounds. The instrument was deployed in the spring of 2009 offshore of southern California in a known beaked whale and dolphin habitat at about 1000 m depth. The array was configured as a tetrahedron with approximately 0.5 m sensor spacing. Time difference of arrival measurements between the six sensor-pairs were used to estimate three-dimensional bearings to sources. Both near-seafloor beaked whales and near-sea surface dolphins were tracked. The tracks observed using this technique provide swimming and diving behavioral information for free-ranging animals using a single instrument. Furthermore, animal detection ranges were derived, allowing for estimation of detection probability functions. |
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Authors:
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Sean M Wiggins; Mark A McDonald; John A Hildebrand |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 131 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-01-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 156 Citation Subset: IM |
Affiliation:
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Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, California 92093-0205. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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