Physiographic influences on dense shelf-water cascading down the Antarctic continental slope
Predicting the source areas for Antarctic Bottom Water (AABW) requires knowledge of how cold, dense water masses form and move from the Antarctic shelves to the continental slope. Here we use a review of nearly 50 years of direct hydrographic observations to infer the main broad-scale influences on...
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Language: | English |
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2018
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ftubarcepubl:oai:diposit.ub.edu:2445/163541 2024-06-23T07:47:40+00:00 Physiographic influences on dense shelf-water cascading down the Antarctic continental slope Amblàs i Novellas, David Dowdeswell, Julian A. 2018-08-01 26 p. application/pdf http://hdl.handle.net/2445/163541 eng eng Elsevier B.V. Versió postprint del document publicat a: https://doi.org/10.1016/j.earscirev.2018.07.014 Earth-Science Reviews, 2018, vol. 185, p. 887-900 https://doi.org/10.1016/j.earscirev.2018.07.014 info:eu-repo/grantAgreement/EC/H2020/658358/EU//SIDEW 0012-8252 http://hdl.handle.net/2445/163541 684243 cc-by-nc-nd (c) Elsevier B.V., 2018 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) Antàrtida Cascades Antarctica Waterfalls info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 2018 ftubarcepubl https://doi.org/10.1016/j.earscirev.2018.07.014 2024-06-04T23:49:10Z Predicting the source areas for Antarctic Bottom Water (AABW) requires knowledge of how cold, dense water masses form and move from the Antarctic shelves to the continental slope. Here we use a review of nearly 50 years of direct hydrographic observations to infer the main broad-scale influences on the distribution of dense shelf-water (DSW) overflows that cascade down the continental slope around Antarctica. The dynamics and distribution of large ice shelves, coastal polynyas and the physiography of the Antarctic continental shelves are each considered. The catalogue we present increases the number of DSW observations to 27, adds 20 additional stations where this process is likely to have occurred, and identifies 41 areas where DSW appears to be absent. Our pan-Antarctic, multi-decadal review enhances the understanding of the formation and export of DSW and highlights the variability and complexity of ice-ocean systems on high-latitude continental margins. The study also provides a context for understanding recent episodes of Antarctic ice-shelf instability, and how the relationship between DSW and AABW may evolve with climatic and oceanographic changes. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Dipòsit Digital de la Universitat de Barcelona Antarctic The Antarctic Earth-Science Reviews 185 887 900 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Antàrtida Cascades Antarctica Waterfalls |
spellingShingle |
Antàrtida Cascades Antarctica Waterfalls Amblàs i Novellas, David Dowdeswell, Julian A. Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
topic_facet |
Antàrtida Cascades Antarctica Waterfalls |
description |
Predicting the source areas for Antarctic Bottom Water (AABW) requires knowledge of how cold, dense water masses form and move from the Antarctic shelves to the continental slope. Here we use a review of nearly 50 years of direct hydrographic observations to infer the main broad-scale influences on the distribution of dense shelf-water (DSW) overflows that cascade down the continental slope around Antarctica. The dynamics and distribution of large ice shelves, coastal polynyas and the physiography of the Antarctic continental shelves are each considered. The catalogue we present increases the number of DSW observations to 27, adds 20 additional stations where this process is likely to have occurred, and identifies 41 areas where DSW appears to be absent. Our pan-Antarctic, multi-decadal review enhances the understanding of the formation and export of DSW and highlights the variability and complexity of ice-ocean systems on high-latitude continental margins. The study also provides a context for understanding recent episodes of Antarctic ice-shelf instability, and how the relationship between DSW and AABW may evolve with climatic and oceanographic changes. |
format |
Article in Journal/Newspaper |
author |
Amblàs i Novellas, David Dowdeswell, Julian A. |
author_facet |
Amblàs i Novellas, David Dowdeswell, Julian A. |
author_sort |
Amblàs i Novellas, David |
title |
Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
title_short |
Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
title_full |
Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
title_fullStr |
Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
title_full_unstemmed |
Physiographic influences on dense shelf-water cascading down the Antarctic continental slope |
title_sort |
physiographic influences on dense shelf-water cascading down the antarctic continental slope |
publisher |
Elsevier B.V. |
publishDate |
2018 |
url |
http://hdl.handle.net/2445/163541 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves |
op_source |
Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) |
op_relation |
Versió postprint del document publicat a: https://doi.org/10.1016/j.earscirev.2018.07.014 Earth-Science Reviews, 2018, vol. 185, p. 887-900 https://doi.org/10.1016/j.earscirev.2018.07.014 info:eu-repo/grantAgreement/EC/H2020/658358/EU//SIDEW 0012-8252 http://hdl.handle.net/2445/163541 684243 |
op_rights |
cc-by-nc-nd (c) Elsevier B.V., 2018 http://creativecommons.org/licenses/by-nc-nd/3.0/es info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.earscirev.2018.07.014 |
container_title |
Earth-Science Reviews |
container_volume |
185 |
container_start_page |
887 |
op_container_end_page |
900 |
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1802651814549520384 |