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dc.contributor.authorSousa, Andreia G
dc.contributor.authorHarris, Danielle
dc.date.accessioned2016-03-09T00:12:09Z
dc.date.available2016-03-09T00:12:09Z
dc.date.issued2015-09
dc.identifier.citationSousa , A G & Harris , D 2015 , ' Description and seasonal detection of two potential whale calls recorded in the Indian Ocean ' , Journal of the Acoustical Society of America , vol. 138 , no. 3 , pp. 1379-1388 . https://doi.org/10.1121/1.4928719en
dc.identifier.issn0001-4966
dc.identifier.otherPURE: 230706072
dc.identifier.otherPURE UUID: 9fad1ad8-890e-4f40-99d6-2badb39069ea
dc.identifier.otherPubMed: 26428776
dc.identifier.otherScopus: 84941249009
dc.identifier.otherWOS: 000368643800044
dc.identifier.otherORCID: /0000-0003-1447-1420/work/61370036
dc.identifier.urihttps://hdl.handle.net/10023/8382
dc.description.abstractUnidentified acoustic signals are recorded by hydrophones placed in the world's oceans. Some of these sounds are suspected to originate from marine mammals. In this study, two acoustic signals recorded by two arrays at Diego Garcia in the northern Indian Ocean are described. Data were available between January 2002 and December 2003. Signals were detected manually using long-term spectral average plots. Time and frequency measurements were taken from a sample of both signals. The first unidentified signal [Diego Garcia Downsweep (DGD)] consisted of two main components. The mean frequency range of the entire signal was 19.3-45.0 Hz, with a mean duration of 36.5 s (n = 22). Detections of DGD at the northern array peaked in the austral summer, though detections at the southern array peaked during winter and spring. The second unidentified signal [Diego Garcia Croak (DGC)] consisted of one component with a mean frequency range of 16.9-49.6 Hz. The mean duration of the signal was 13.1 s (n = 10). Detections of DGC did not follow a clear seasonal pattern. These signals followed characteristics of biological sources, suggesting that they could be whale calls. Fin whale calls and possible blue whales D-calls were also identified in the data.
dc.language.isoeng
dc.relation.ispartofJournal of the Acoustical Society of Americaen
dc.rights2015 Acoustical Society of America. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at [http://dx.doi.org/10.1121/1.4928719en
dc.subjectGC Oceanographyen
dc.subjectQA Mathematicsen
dc.subjectQH301 Biologyen
dc.subjectNDASen
dc.subjectSDG 14 - Life Below Wateren
dc.subject.lccGCen
dc.subject.lccQAen
dc.subject.lccQH301en
dc.titleDescription and seasonal detection of two potential whale calls recorded in the Indian Oceanen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews. Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.identifier.doihttps://doi.org/10.1121/1.4928719
dc.description.statusPeer revieweden
dc.date.embargoedUntil2016-03-09


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