On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks
Cetaceans are prone to collisions with fast vessels, and in areas of high cetacean and vessel density such as in the Canary Islands, the sperm whale ( Physeter macrocephalus ) is of great concern. Sperm whales are highly vocal and can be localized with passive sonar, but, when at or near the surface...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Online Access: | http://dx.doi.org/10.1017/s0025315407054951 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315407054951 |
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crcambridgeupr:10.1017/s0025315407054951 2024-03-03T08:47:58+00:00 On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks Delory, E. André, M. Navarro Mesa, J.-L. van der Schaar, M. 2007 http://dx.doi.org/10.1017/s0025315407054951 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315407054951 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 87, issue 1, page 47-58 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2007 crcambridgeupr https://doi.org/10.1017/s0025315407054951 2024-02-08T08:45:04Z Cetaceans are prone to collisions with fast vessels, and in areas of high cetacean and vessel density such as in the Canary Islands, the sperm whale ( Physeter macrocephalus ) is of great concern. Sperm whales are highly vocal and can be localized with passive sonar, but, when at or near the surface, they tend to stop vocalizing, i.e. when they are most at risk. Regrettably, ship-borne active solutions have proven inefficient due to the short detection range and the ships' high-speeds. Our objective in this paper is to evaluate the efficiency of an original passive sonar solution that would use vocalizing whale clicks at depth as acoustic sources to detect silent whales. This solution could be a non-invasive complementary component of a more complex passive localization whale anti-collision system. To meet this aim, a simulation tool for 3D acoustic propagation was designed in which a wideband Nx2D ray solution of the wave equation simulates a passive solution consisting of an arbitrary number of active acoustic sources, an illuminated object, and a receiver, all positioned in a three-dimensional space with arbitrary bathymetry. Both curved and straight ray solutions were implemented, the latter providing greater computational speeds at the expense of temporal and angular precision. The software recreates the resulting sound mixture of direct, reverberated and target back-scattered signals arriving at the array sensors for any array configuration, any number of sources and one target. Simulations show the application of the concept for the Canary Islands, with a detection range upper bound of the order of one kilometre. Article in Journal/Newspaper Physeter macrocephalus Sperm whale Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 87 1 47 58 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Delory, E. André, M. Navarro Mesa, J.-L. van der Schaar, M. On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
topic_facet |
Aquatic Science |
description |
Cetaceans are prone to collisions with fast vessels, and in areas of high cetacean and vessel density such as in the Canary Islands, the sperm whale ( Physeter macrocephalus ) is of great concern. Sperm whales are highly vocal and can be localized with passive sonar, but, when at or near the surface, they tend to stop vocalizing, i.e. when they are most at risk. Regrettably, ship-borne active solutions have proven inefficient due to the short detection range and the ships' high-speeds. Our objective in this paper is to evaluate the efficiency of an original passive sonar solution that would use vocalizing whale clicks at depth as acoustic sources to detect silent whales. This solution could be a non-invasive complementary component of a more complex passive localization whale anti-collision system. To meet this aim, a simulation tool for 3D acoustic propagation was designed in which a wideband Nx2D ray solution of the wave equation simulates a passive solution consisting of an arbitrary number of active acoustic sources, an illuminated object, and a receiver, all positioned in a three-dimensional space with arbitrary bathymetry. Both curved and straight ray solutions were implemented, the latter providing greater computational speeds at the expense of temporal and angular precision. The software recreates the resulting sound mixture of direct, reverberated and target back-scattered signals arriving at the array sensors for any array configuration, any number of sources and one target. Simulations show the application of the concept for the Canary Islands, with a detection range upper bound of the order of one kilometre. |
format |
Article in Journal/Newspaper |
author |
Delory, E. André, M. Navarro Mesa, J.-L. van der Schaar, M. |
author_facet |
Delory, E. André, M. Navarro Mesa, J.-L. van der Schaar, M. |
author_sort |
Delory, E. |
title |
On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
title_short |
On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
title_full |
On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
title_fullStr |
On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
title_full_unstemmed |
On the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
title_sort |
on the possibility of detecting surfacing sperm whales at risk of collision using others' foraging clicks |
publisher |
Cambridge University Press (CUP) |
publishDate |
2007 |
url |
http://dx.doi.org/10.1017/s0025315407054951 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315407054951 |
genre |
Physeter macrocephalus Sperm whale |
genre_facet |
Physeter macrocephalus Sperm whale |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 87, issue 1, page 47-58 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315407054951 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
87 |
container_issue |
1 |
container_start_page |
47 |
op_container_end_page |
58 |
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1792504296969863168 |