Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf
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 i...
Published in: | Communications Earth & Environment |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://researchers.mq.edu.au/en/publications/a20681c7-55a4-4e02-ae40-ddcd61a54854 https://doi.org/10.1038/s43247-023-00928-w https://research-management.mq.edu.au/ws/files/331397415/331012949.pdf http://www.scopus.com/inward/record.url?scp=85165487543&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/DP180101667 http://purl.org/au-research/grants/arc/SR200100008 |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/a20681c7-55a4-4e02-ae40-ddcd61a54854 2024-09-30T14:24:00+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 2023-07-21 application/pdf https://researchers.mq.edu.au/en/publications/a20681c7-55a4-4e02-ae40-ddcd61a54854 https://doi.org/10.1038/s43247-023-00928-w https://research-management.mq.edu.au/ws/files/331397415/331012949.pdf http://www.scopus.com/inward/record.url?scp=85165487543&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/DP180101667 http://purl.org/au-research/grants/arc/SR200100008 eng eng info:eu-repo/semantics/openAccess McMahon , C R , Hindell , M A , Charrassin , J B , Coleman , R , Guinet , C , Harcourt , R , Labrousse , S , Raymond , B , Sumner , M & Ribeiro , N 2023 , ' Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf ' , Communications Earth and Environment , vol. 4 , no. 1 , 266 , pp. 1-10 . https://doi.org/10.1038/s43247-023-00928-w article 2023 ftmacquarieunicr https://doi.org/10.1038/s43247-023-00928-w 2024-09-18T23:49:11Z 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 Macquarie University Research Portal Antarctic Shackleton Shackleton Ice Shelf ENVELOPE(100.504,100.504,-65.996,-65.996) Southern Ocean The Antarctic Underwood ENVELOPE(49.350,49.350,-68.133,-68.133) Underwood Glacier ENVELOPE(108.083,108.083,-66.600,-66.600) Vanderford Glacier ENVELOPE(110.433,110.433,-66.583,-66.583) Communications Earth & Environment 4 1 |
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Open Polar |
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Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
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. |
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 |
spellingShingle |
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 |
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 |
publishDate |
2023 |
url |
https://researchers.mq.edu.au/en/publications/a20681c7-55a4-4e02-ae40-ddcd61a54854 https://doi.org/10.1038/s43247-023-00928-w https://research-management.mq.edu.au/ws/files/331397415/331012949.pdf http://www.scopus.com/inward/record.url?scp=85165487543&partnerID=8YFLogxK http://purl.org/au-research/grants/arc/DP180101667 http://purl.org/au-research/grants/arc/SR200100008 |
long_lat |
ENVELOPE(100.504,100.504,-65.996,-65.996) ENVELOPE(49.350,49.350,-68.133,-68.133) ENVELOPE(108.083,108.083,-66.600,-66.600) ENVELOPE(110.433,110.433,-66.583,-66.583) |
geographic |
Antarctic Shackleton Shackleton Ice Shelf Southern Ocean The Antarctic Underwood Underwood Glacier Vanderford Glacier |
geographic_facet |
Antarctic Shackleton Shackleton Ice Shelf Southern Ocean The Antarctic Underwood Underwood Glacier Vanderford Glacier |
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 |
McMahon , C R , Hindell , M A , Charrassin , J B , Coleman , R , Guinet , C , Harcourt , R , Labrousse , S , Raymond , B , Sumner , M & Ribeiro , N 2023 , ' Southern Ocean pinnipeds provide bathymetric insights on the East Antarctic continental shelf ' , Communications Earth and Environment , vol. 4 , no. 1 , 266 , pp. 1-10 . https://doi.org/10.1038/s43247-023-00928-w |
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_ |
1811639285976137728 |