Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf
International audience Poor coverage of the Antarctic continental shelf bathymetry impedes understanding the oceanographic processes affecting Antarctica’s role in global climate. Continental shelf bathymetry influences warm modified Circumpolar Deep Water movement onto the shelf, making it an impor...
Published in: | Communications Earth & Environment |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Online Access: | https://hal.science/hal-04172329 https://hal.science/hal-04172329/document https://hal.science/hal-04172329/file/MMCEE4_2023.pdf https://doi.org/10.1038/s43247-023-00928-w |
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ftuniversailles:oai:HAL:hal-04172329v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Mcmahon, Clive, R Hindell, Mark, A Charrassin, Jean-Benoit Coleman, Richard Guinet, Christophe Harcourt, Robert Labrousse, Sara Raymond, Benjemin Sumner, Michael Ribeiro, Natalia Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Poor coverage of the Antarctic continental shelf bathymetry impedes understanding the oceanographic processes affecting Antarctica’s role in global climate. Continental shelf bathymetry influences warm modified Circumpolar Deep Water movement onto the shelf, making it an important factor promoting ice shelf melting and influencing the flow of ice shelves into the ocean. Building on previous work using seal dives to redefine bathymetry, our longitudinal study of ocean physics and animal behaviour provided new depth information from over 500,000 individual seal dives on the East Antarctic continental shelf. About 25% of these seal dives were 220 m (sometimes over 1000 m) deeper than the interpolated seafloor from IBCSO V2. Focusing on four well-sampled regions, we show that the bathymetry of 22% to 60% of the sampled area was improved by incorporating seal dive data. This revealed new bathymetric features, including troughs off the Shackleton Ice Shelf and Underwood Glacier and a deep canyon near the Vanderford Glacier. This deep canyon, the Mirounga-Nuyina Canyon , was confirmed by a recent multi-beam echo sounder survey. Further acquisitions of seal data will improve our understanding and modelling of Antarctic coastal ocean processes and ice-sheet dynamics. |
author2 |
IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) School of Natural Sciences Australia Macquarie University |
format |
Article in Journal/Newspaper |
author |
Mcmahon, Clive, R Hindell, Mark, A Charrassin, Jean-Benoit Coleman, Richard Guinet, Christophe Harcourt, Robert Labrousse, Sara Raymond, Benjemin Sumner, Michael Ribeiro, Natalia |
author_facet |
Mcmahon, Clive, R Hindell, Mark, A Charrassin, Jean-Benoit Coleman, Richard Guinet, Christophe Harcourt, Robert Labrousse, Sara Raymond, Benjemin Sumner, Michael Ribeiro, Natalia |
author_sort |
Mcmahon, Clive, R |
title |
Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
title_short |
Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
title_full |
Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
title_fullStr |
Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
title_full_unstemmed |
Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf |
title_sort |
southern ocean pinnipeds provide bathymetric insights on the east antarctic continental shelf |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04172329 https://hal.science/hal-04172329/document https://hal.science/hal-04172329/file/MMCEE4_2023.pdf https://doi.org/10.1038/s43247-023-00928-w |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Shackleton Ice Shelf Southern Ocean Underwood Glacier Vanderford Glacier |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Shackleton Ice Shelf Southern Ocean Underwood Glacier Vanderford Glacier |
op_source |
ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04172329 Communications Earth & Environment, 2023, 4 (1), pp.266. ⟨10.1038/s43247-023-00928-w⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-023-00928-w hal-04172329 https://hal.science/hal-04172329 https://hal.science/hal-04172329/document https://hal.science/hal-04172329/file/MMCEE4_2023.pdf doi:10.1038/s43247-023-00928-w WOS: 001034468900002 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s43247-023-00928-w |
container_title |
Communications Earth & Environment |
container_volume |
4 |
container_issue |
1 |
_version_ |
1799469421547225088 |
spelling |
ftuniversailles:oai:HAL:hal-04172329v1 2024-05-19T07:31:34+00:00 Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf Mcmahon, Clive, R Hindell, Mark, A Charrassin, Jean-Benoit Coleman, Richard Guinet, Christophe Harcourt, Robert Labrousse, Sara Raymond, Benjemin Sumner, Michael Ribeiro, Natalia IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) School of Natural Sciences Australia Macquarie University 2023 https://hal.science/hal-04172329 https://hal.science/hal-04172329/document https://hal.science/hal-04172329/file/MMCEE4_2023.pdf https://doi.org/10.1038/s43247-023-00928-w en eng HAL CCSD Springer Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s43247-023-00928-w hal-04172329 https://hal.science/hal-04172329 https://hal.science/hal-04172329/document https://hal.science/hal-04172329/file/MMCEE4_2023.pdf doi:10.1038/s43247-023-00928-w WOS: 001034468900002 info:eu-repo/semantics/OpenAccess ISSN: 2662-4435 Communications Earth & Environment https://hal.science/hal-04172329 Communications Earth & Environment, 2023, 4 (1), pp.266. ⟨10.1038/s43247-023-00928-w⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2023 ftuniversailles https://doi.org/10.1038/s43247-023-00928-w 2024-04-25T00:19:42Z International audience Poor coverage of the Antarctic continental shelf bathymetry impedes understanding the oceanographic processes affecting Antarctica’s role in global climate. Continental shelf bathymetry influences warm modified Circumpolar Deep Water movement onto the shelf, making it an important factor promoting ice shelf melting and influencing the flow of ice shelves into the ocean. Building on previous work using seal dives to redefine bathymetry, our longitudinal study of ocean physics and animal behaviour provided new depth information from over 500,000 individual seal dives on the East Antarctic continental shelf. About 25% of these seal dives were 220 m (sometimes over 1000 m) deeper than the interpolated seafloor from IBCSO V2. Focusing on four well-sampled regions, we show that the bathymetry of 22% to 60% of the sampled area was improved by incorporating seal dive data. This revealed new bathymetric features, including troughs off the Shackleton Ice Shelf and Underwood Glacier and a deep canyon near the Vanderford Glacier. This deep canyon, the Mirounga-Nuyina Canyon , was confirmed by a recent multi-beam echo sounder survey. Further acquisitions of seal data will improve our understanding and modelling of Antarctic coastal ocean processes and ice-sheet dynamics. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf Ice Shelves Shackleton Ice Shelf Southern Ocean Underwood Glacier Vanderford Glacier Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Communications Earth & Environment 4 1 |