Detection range modeling of blue whale calls in Southwestern Indian Ocean
International audience In the Southwestern Indian Ocean, one year of continuous acoustic data from calibrated hydrophones maintained by the International Monitoring System provided data on blue whale calls from two subspecies Antarctic and pygmy blue whales. Using an automatic detection method with...
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ftunivnantes:oai:HAL:hal-00547715v1 2023-05-15T14:04:46+02:00 Detection range modeling of blue whale calls in Southwestern Indian Ocean Samaran, Flore Adam, Olivier Guinet, Christophe Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Neurobiologie de l'apprentissage, de la mémoire et de la communication (NAMC) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) 2010-11 https://hal.science/hal-00547715 https://doi.org/10.1016/j.apacoust.2010.05.014 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apacoust.2010.05.014 hal-00547715 https://hal.science/hal-00547715 doi:10.1016/j.apacoust.2010.05.014 ISSN: 0003-682X Applied Acoustics https://hal.science/hal-00547715 Applied Acoustics, 2010, 71 (11), pp.1099-1106. ⟨10.1016/j.apacoust.2010.05.014⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2010 ftunivnantes https://doi.org/10.1016/j.apacoust.2010.05.014 2023-02-08T00:50:51Z International audience In the Southwestern Indian Ocean, one year of continuous acoustic data from calibrated hydrophones maintained by the International Monitoring System provided data on blue whale calls from two subspecies Antarctic and pygmy blue whales. Using an automatic detection method with a fixed threshold, both call types were detected and received levels were measured for each detected call. By using a parabolic equation loss model configured with the precise characteristics of the biological source, hydroacoustic station, and environment in the study area, distances at which calls could be detected were estimated. These methods were used to define the maximum detection range around each array of hydrophones and the influence of the seasonal variation of the ambient noise and sound velocity on the detection ranges. Results showed that detection ranges were critically dependent on the choice of the biological source's input parameters, including frequency bandwidth and source level. Over the course of the year, detection distances were different for both subspecies; the pygmy blue whale seemed to be consistently closer to the station than the Antarctic blue whale. The distribution of the estimated distances confirmed the presence of both subspecies of blue whales near the Crozet Islands showing the importance of this sub-Antarctic area for these endangered species, especially during the austral summer feeding season. Article in Journal/Newspaper Antarc* Antarctic Blue whale Crozet Islands Université de Nantes: HAL-UNIV-NANTES Antarctic Austral Indian The Antarctic Applied Acoustics 71 11 1099 1106 |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Samaran, Flore Adam, Olivier Guinet, Christophe Detection range modeling of blue whale calls in Southwestern Indian Ocean |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience In the Southwestern Indian Ocean, one year of continuous acoustic data from calibrated hydrophones maintained by the International Monitoring System provided data on blue whale calls from two subspecies Antarctic and pygmy blue whales. Using an automatic detection method with a fixed threshold, both call types were detected and received levels were measured for each detected call. By using a parabolic equation loss model configured with the precise characteristics of the biological source, hydroacoustic station, and environment in the study area, distances at which calls could be detected were estimated. These methods were used to define the maximum detection range around each array of hydrophones and the influence of the seasonal variation of the ambient noise and sound velocity on the detection ranges. Results showed that detection ranges were critically dependent on the choice of the biological source's input parameters, including frequency bandwidth and source level. Over the course of the year, detection distances were different for both subspecies; the pygmy blue whale seemed to be consistently closer to the station than the Antarctic blue whale. The distribution of the estimated distances confirmed the presence of both subspecies of blue whales near the Crozet Islands showing the importance of this sub-Antarctic area for these endangered species, especially during the austral summer feeding season. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Neurobiologie de l'apprentissage, de la mémoire et de la communication (NAMC) Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Samaran, Flore Adam, Olivier Guinet, Christophe |
author_facet |
Samaran, Flore Adam, Olivier Guinet, Christophe |
author_sort |
Samaran, Flore |
title |
Detection range modeling of blue whale calls in Southwestern Indian Ocean |
title_short |
Detection range modeling of blue whale calls in Southwestern Indian Ocean |
title_full |
Detection range modeling of blue whale calls in Southwestern Indian Ocean |
title_fullStr |
Detection range modeling of blue whale calls in Southwestern Indian Ocean |
title_full_unstemmed |
Detection range modeling of blue whale calls in Southwestern Indian Ocean |
title_sort |
detection range modeling of blue whale calls in southwestern indian ocean |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-00547715 https://doi.org/10.1016/j.apacoust.2010.05.014 |
geographic |
Antarctic Austral Indian The Antarctic |
geographic_facet |
Antarctic Austral Indian The Antarctic |
genre |
Antarc* Antarctic Blue whale Crozet Islands |
genre_facet |
Antarc* Antarctic Blue whale Crozet Islands |
op_source |
ISSN: 0003-682X Applied Acoustics https://hal.science/hal-00547715 Applied Acoustics, 2010, 71 (11), pp.1099-1106. ⟨10.1016/j.apacoust.2010.05.014⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apacoust.2010.05.014 hal-00547715 https://hal.science/hal-00547715 doi:10.1016/j.apacoust.2010.05.014 |
op_doi |
https://doi.org/10.1016/j.apacoust.2010.05.014 |
container_title |
Applied Acoustics |
container_volume |
71 |
container_issue |
11 |
container_start_page |
1099 |
op_container_end_page |
1106 |
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1766276060207382528 |