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    "spot" call: A common sound from an unidentified great whale in Australian temperate waters

    255648.pdf (2.479Mb)
    Access Status
    Open access
    Authors
    Ward, R.
    Gavrilov, Alexander
    McCauley, Robert
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ward, R. and Gavrilov, A. and McCauley, R. 2017. "spot" call: A common sound from an unidentified great whale in Australian temperate waters. Journal of the Acoustical Society of America. 142 (2): pp. EL231-EL236.
    Source Title
    Journal of the Acoustical Society of America
    DOI
    10.1121/1.4998608
    ISSN
    0001-4966
    School
    Centre for Marine Science and Technology
    Remarks

    Copyright © 2017 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

    URI
    http://hdl.handle.net/20.500.11937/56882
    Collection
    • Curtin Research Publications
    Abstract

    Underwater passive acoustic recordings in the Southern and Indian Oceans off Australia from 2002 to 2016 have regularly captured a tonal signal of about 10 s duration at 22-28 Hz with a symmetrical bell-shaped envelope. The sound is often accompanied by short, higher frequency downsweeps and repeated at irregular intervals varying from 120 to 200 s. It is termed the "spot" call according to its appearance in spectrograms of long-time averaging. Although similar to the first part of an Antarctic blue whale Z-call, evidence suggests the call is produced by another great whale, with the source as yet not identified.

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