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Separating underwater ambient noise from flow noise recorded on stereo acoustic tags attached to marine mammals

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Miller_2016_JEB_AmbientNoise_FinalPublishedVersion.pdf (7.390Mb)
Date
03/08/2016
Author
von Benda-Beckmann, Alexander M.
Wensveen, Paul Jacobus
Samarra, Filipa I. P.
Beerens, S. Peter
Miller, Patrick J. O.
Funder
Office of Naval Research
Grant ID
N00014 08 1 0984
Keywords
DTAG
Megaptera novaeangliae
Orcinus orca
QH301 Biology
Ecology, Evolution, Behavior and Systematics
Physiology
Medicine(all)
Aquatic Science
Animal Science and Zoology
Molecular Biology
Insect Science
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Abstract
Sound-recording acoustic tags attached to marine animals are commonly used in behavioural studies. Measuring ambient noise is of interest to efforts to understand responses of marine mammals to anthropogenic underwater sound, or to assess their communication space. Noise of water flowing around the tag reflects the speed of the animal, but hinders ambient noise measurement. Here, we describe a correlation-based method for stereo acoustic tags to separate the relative contributions of flow and ambient noise. The uncorrelated part of the noise measured in digital acoustic recording tag (DTAG) recordings related well to swim speed of a humpback whale (Megaptera novaeangliae), thus providing a robust measure of flow noise over a wide frequency bandwidth. By removing measurements affected by flow noise, consistent ambient noise estimates were made for two killer whales (Orcinus orca) with DTAGs attached simultaneously. The method is applicable to any multi-channel acoustic tag, enabling application to a wide range of marine species.
Citation
von Benda-Beckmann , A M , Wensveen , P J , Samarra , F I P , Beerens , S P & Miller , P J O 2016 , ' Separating underwater ambient noise from flow noise recorded on stereo acoustic tags attached to marine mammals ' , Journal of Experimental Biology , vol. 219 , no. 15 , pp. 2271-2275 . https://doi.org/10.1242/jeb.133116
Publication
Journal of Experimental Biology
Status
Peer reviewed
DOI
https://doi.org/10.1242/jeb.133116
ISSN
0022-0949
Type
Journal article
Rights
© 2016, the Author(s). This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at jeb.biologists.org / https://dx.doi.org/10.1242/jeb.133116
Description
A.M.v.B.B. and P.B. were funded by The Netherlands Ministry of Defence. Fieldwork efforts and support for P.M. and F.S. was provided by the US Office of Naval Research [award numbers N00014-08-1-0984 and N00014-10-1-0355]. P.W. received a PhD studentship with matched funding from The Netherlands Ministry of Defence (administered by The Netherlands Organisation for Applied Scientific Research, TNO) and UK Natural Environment Research Council [NE/J500276/1].
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10867

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