Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet
Subglacial lakes have long been considered hydraulically isolated water bodies underneath ice sheets. This view changed radically with the advent of repeat-pass satellite altimetry and the discovery of multiple lake discharges and water infill, associated with water transfer over distances of more t...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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crroyalsociety:10.1098/rsta.2014.0296 2024-09-15T17:44:20+00:00 Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet Pattyn, Frank Carter, Sasha P. Thoma, Malte 2016 http://dx.doi.org/10.1098/rsta.2014.0296 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0296 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0296 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 374, issue 2059, page 20140296 ISSN 1364-503X 1471-2962 journal-article 2016 crroyalsociety https://doi.org/10.1098/rsta.2014.0296 2024-07-29T04:23:21Z Subglacial lakes have long been considered hydraulically isolated water bodies underneath ice sheets. This view changed radically with the advent of repeat-pass satellite altimetry and the discovery of multiple lake discharges and water infill, associated with water transfer over distances of more than 200 km. The presence of subglacial lakes also influences ice dynamics, leading to glacier acceleration. Furthermore, subglacial melting under the Antarctic ice sheet is more widespread than previously thought, and subglacial melt rates may explain the availability for water storage in subglacial lakes and water transport. Modelling of subglacial water discharge in subglacial lakes essentially follows hydraulics of subglacial channels on a hard bed, where ice sheet surface slope is a major control on triggering subglacial lake discharge. Recent evidence also points to the development of channels in deformable sediment in West Antarctica, with significant water exchanges between till and ice. Most active lakes drain over short time scales and respond rapidly to upstream variations. Several Antarctic subglacial lakes exhibit complex interactions with the ice sheet due to water circulation. Subglacial lakes can therefore—from a modelling point of view—be seen as confined small oceans underneath an imbedded ice shelf. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica The Royal Society Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374 2059 20140296 |
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The Royal Society |
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crroyalsociety |
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English |
description |
Subglacial lakes have long been considered hydraulically isolated water bodies underneath ice sheets. This view changed radically with the advent of repeat-pass satellite altimetry and the discovery of multiple lake discharges and water infill, associated with water transfer over distances of more than 200 km. The presence of subglacial lakes also influences ice dynamics, leading to glacier acceleration. Furthermore, subglacial melting under the Antarctic ice sheet is more widespread than previously thought, and subglacial melt rates may explain the availability for water storage in subglacial lakes and water transport. Modelling of subglacial water discharge in subglacial lakes essentially follows hydraulics of subglacial channels on a hard bed, where ice sheet surface slope is a major control on triggering subglacial lake discharge. Recent evidence also points to the development of channels in deformable sediment in West Antarctica, with significant water exchanges between till and ice. Most active lakes drain over short time scales and respond rapidly to upstream variations. Several Antarctic subglacial lakes exhibit complex interactions with the ice sheet due to water circulation. Subglacial lakes can therefore—from a modelling point of view—be seen as confined small oceans underneath an imbedded ice shelf. |
format |
Article in Journal/Newspaper |
author |
Pattyn, Frank Carter, Sasha P. Thoma, Malte |
spellingShingle |
Pattyn, Frank Carter, Sasha P. Thoma, Malte Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
author_facet |
Pattyn, Frank Carter, Sasha P. Thoma, Malte |
author_sort |
Pattyn, Frank |
title |
Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
title_short |
Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
title_full |
Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
title_fullStr |
Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
title_full_unstemmed |
Advances in modelling subglacial lakes and their interaction with the Antarctic ice sheet |
title_sort |
advances in modelling subglacial lakes and their interaction with the antarctic ice sheet |
publisher |
The Royal Society |
publishDate |
2016 |
url |
http://dx.doi.org/10.1098/rsta.2014.0296 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2014.0296 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2014.0296 |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf West Antarctica |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 374, issue 2059, page 20140296 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2014.0296 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
374 |
container_issue |
2059 |
container_start_page |
20140296 |
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1810491796808007680 |