"spot" call: A common sound from an unidentified great whale in Australian temperate waters
MetadataShow full item record
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.
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.
Showing items related by title, author, creator and subject.
Parsons, Miles James Gerard (2009)Techniques of single- and multi-beam active acoustics and the passive recording of fish vocalisations were employed to evaluate the benefits and limitations of each technique as a method for assessing and monitoring fish ...
Parsons, Miles; McCauley, Robert; Mackie, M; Siwabessy, Paulus; Duncan, Alexander (2012)Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call source levels and their contribution to overall recorded sound ...
Heritage, B.; Harvey, C.; Brown, Janie ; Hegney, D.; Willis, E.; Baldwin, A.; Heard, D.; McLellan, S.; Clayton, V.; Claes, J.; Lang, M.; Curnow, V. (2020)Background: Hospitals and other health care providers frequently experience difficulties contacting patients and their carers who live remotely from the town where the health service is located. In 2016 Nurse Navigator ...