Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae)
The source level of an animal sound is important in communication, since it affects the distance over which the sound is audible. Several measurements of source levels of whale sounds have been reported, but the accuracy of many is limited because the distance to the source and the acoustic transmis...
Published in: | The Journal of the Acoustical Society of America |
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Online Access: | https://espace.library.uq.edu.au/view/UQ:307295/UQ307295_OA.pdf https://espace.library.uq.edu.au/view/UQ:307295 |
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:307295 2023-05-15T16:36:05+02:00 Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) Dunlop, Rebecca A. Cato, Douglas H. Noad, Michael J. Stokes, Dale M. 2013-07-01 https://espace.library.uq.edu.au/view/UQ:307295/UQ307295_OA.pdf https://espace.library.uq.edu.au/view/UQ:307295 eng eng A I P Publishing LLC doi:10.1121/1.4807828 issn:0001-4966 issn:1520-8524 orcid:0000-0002-0427-6317 orcid:0000-0002-2799-8320 Not set Songs Vocalizations Behavior Communication Playback Waters Alaska 1201 Arts and Humanities (miscellaneous) 3102 Acoustics and Ultrasonics Journal Article 2013 ftunivqespace https://doi.org/10.1121/1.4807828 2020-12-15T00:20:35Z The source level of an animal sound is important in communication, since it affects the distance over which the sound is audible. Several measurements of source levels of whale sounds have been reported, but the accuracy of many is limited because the distance to the source and the acoustic transmission loss were estimated rather than measured. This paper presents measurements of source levels of social sounds (surface-generated and vocal sounds) of humpback whales from a sample of 998 sounds recorded from 49 migrating humpback whale groups. Sources were localized using a wide baseline five hydrophone array and transmission loss was measured for the site. Social vocalization source levels were found to range from 123 to 183 dB re 1 mu Pa @ 1 m with a median of 158 dB re 1 mu Pa @ 1 m. Source levels of surface-generated social sounds ("breaches" and "slaps") were narrower in range (133 to 171 dB re 1 mu Pa @ 1 m) but slightly higher in level (median of 162 dB re 1 mu Pa @ 1 m) compared to vocalizations. The data suggest that group composition has an effect on group vocalization source levels in that singletons and mother-calf-singing escort groups tend to vocalize at higher levels compared to other group compositions. VC 2013 Acoustical Society of America. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Alaska The University of Queensland: UQ eSpace The Journal of the Acoustical Society of America 134 1 706 714 |
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Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Songs Vocalizations Behavior Communication Playback Waters Alaska 1201 Arts and Humanities (miscellaneous) 3102 Acoustics and Ultrasonics |
spellingShingle |
Songs Vocalizations Behavior Communication Playback Waters Alaska 1201 Arts and Humanities (miscellaneous) 3102 Acoustics and Ultrasonics Dunlop, Rebecca A. Cato, Douglas H. Noad, Michael J. Stokes, Dale M. Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
topic_facet |
Songs Vocalizations Behavior Communication Playback Waters Alaska 1201 Arts and Humanities (miscellaneous) 3102 Acoustics and Ultrasonics |
description |
The source level of an animal sound is important in communication, since it affects the distance over which the sound is audible. Several measurements of source levels of whale sounds have been reported, but the accuracy of many is limited because the distance to the source and the acoustic transmission loss were estimated rather than measured. This paper presents measurements of source levels of social sounds (surface-generated and vocal sounds) of humpback whales from a sample of 998 sounds recorded from 49 migrating humpback whale groups. Sources were localized using a wide baseline five hydrophone array and transmission loss was measured for the site. Social vocalization source levels were found to range from 123 to 183 dB re 1 mu Pa @ 1 m with a median of 158 dB re 1 mu Pa @ 1 m. Source levels of surface-generated social sounds ("breaches" and "slaps") were narrower in range (133 to 171 dB re 1 mu Pa @ 1 m) but slightly higher in level (median of 162 dB re 1 mu Pa @ 1 m) compared to vocalizations. The data suggest that group composition has an effect on group vocalization source levels in that singletons and mother-calf-singing escort groups tend to vocalize at higher levels compared to other group compositions. VC 2013 Acoustical Society of America. |
format |
Article in Journal/Newspaper |
author |
Dunlop, Rebecca A. Cato, Douglas H. Noad, Michael J. Stokes, Dale M. |
author_facet |
Dunlop, Rebecca A. Cato, Douglas H. Noad, Michael J. Stokes, Dale M. |
author_sort |
Dunlop, Rebecca A. |
title |
Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
title_short |
Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
title_full |
Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
title_fullStr |
Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
title_full_unstemmed |
Source levels of social sounds in migrating humpback whales (Megaptera novaeangliae) |
title_sort |
source levels of social sounds in migrating humpback whales (megaptera novaeangliae) |
publisher |
A I P Publishing LLC |
publishDate |
2013 |
url |
https://espace.library.uq.edu.au/view/UQ:307295/UQ307295_OA.pdf https://espace.library.uq.edu.au/view/UQ:307295 |
genre |
Humpback Whale Megaptera novaeangliae Alaska |
genre_facet |
Humpback Whale Megaptera novaeangliae Alaska |
op_relation |
doi:10.1121/1.4807828 issn:0001-4966 issn:1520-8524 orcid:0000-0002-0427-6317 orcid:0000-0002-2799-8320 Not set |
op_doi |
https://doi.org/10.1121/1.4807828 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
134 |
container_issue |
1 |
container_start_page |
706 |
op_container_end_page |
714 |
_version_ |
1766026390563454976 |