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dc.contributor.authorMcCauley, Robert
dc.contributor.authorJenner, Curt
dc.contributor.authorBannister, John
dc.contributor.authorCato, Doug
dc.contributor.authorDuncan, Alec
dc.identifier.citationMcCauley, R. and Jenner, C. and Bannister, J. and Cato, D. and Duncan, A. 2000. Blue whale calling in the Rottnest trench, Western Australia, and low frequency sea noise. Acoustics 2000 Putting the Science and Technology to Work. Conference Proceedings. pp. 245-250.

Through January-April 2000 research was carried out off the Rottnest trench to search for blue or pygmy blue whales. A consortium of researchers carried out aerial surveys, boat based studies and acoustical measures. Historical records led us to believe that a Western Australian population of pygmy blue whales (Balaenopteridae musculus brevicauda, sub species of the true blue whale, B. m. musculus) existed, while a preliminary boat survey in 1994 suggested that some of these animals aggregated in the Rottnest trench west of Perth. This was confirmed in the early 2000 observations, in 30 days boat based searching 17 pygmy blue whales were sighted. Five thousand acoustic records were made, almost all of which had blue/pygmy blue whale calling in, some having up to six animals calling at once. Although of a slightly different format, recorded call components were of a similar character to those described from other populations. Also common were impuslive 'clicking' calls which were shorter than the 12-23 s blue whale call components and of low to very low frequency (< 1 Hz to 20 Hz). The literature suggests these are produced by fin whales but none were sighted. The low frequency (< 100 Hz) sea noise spectra from a series of 90 s recordings made every 10 minutes for 33.5 days was dominated was dominated by blue whale calling.

dc.titleBlue whale calling in the Rottnest trench, Western Australia, and low frequency sea noise
dc.typeJournal Article
dcterms.source.titleAcoustics 2000 Putting the Science and Technology to Work. Conference Proceeding
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access via publisher
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidMcCauley, Robert [0000-0002-7401-8751]
curtin.contributor.scopusauthoridMcCauley, Robert [7102283644]

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