The role of channelized basal melt in ice-shelf stability: recent progress and future priorities
Abstract Basal channels, which form where buoyant plumes of ocean water and meltwater carve troughs upwards into ice-shelf bases, are widespread on Antarctic ice shelves. The formation of these features modulates ice-shelf basal melt by influencing the flow of buoyant plumes, and influences structur...
Published in: | Annals of Glaciology |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/aog.2023.5 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000058 |
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crcambridgeupr:10.1017/aog.2023.5 2024-09-30T14:22:46+00:00 The role of channelized basal melt in ice-shelf stability: recent progress and future priorities Alley, Karen E. Scambos, Ted A. Alley, Richard B. National Aeronautics and Space Administration Heising-Simons Foundation U.S. Geological Survey National Science Foundation National Science Foundation Natural Sciences and Engineering Research Council of Canada 2022 http://dx.doi.org/10.1017/aog.2023.5 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000058 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology volume 63, issue 87-89, page 18-22 ISSN 0260-3055 1727-5644 journal-article 2022 crcambridgeupr https://doi.org/10.1017/aog.2023.5 2024-09-04T04:04:39Z Abstract Basal channels, which form where buoyant plumes of ocean water and meltwater carve troughs upwards into ice-shelf bases, are widespread on Antarctic ice shelves. The formation of these features modulates ice-shelf basal melt by influencing the flow of buoyant plumes, and influences structural stability through concentration of strain and interactions with fractures. Because of these effects, and because basal channels can change rapidly, on timescales similar to those of ice-shelf evolution, constraining the impacts of basal channels on ice shelves is necessary for predicting future ice-shelf destabilization and retreat. We suggest that future research priorities should include constraining patterns and rates of basal channel change, determining mechanisms and detailed patterns of basal melt, and quantifying the influence that channel-related fractures have on ice-shelf stability. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Ice Shelf Ice Shelves Cambridge University Press Antarctic Annals of Glaciology 1 5 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Basal channels, which form where buoyant plumes of ocean water and meltwater carve troughs upwards into ice-shelf bases, are widespread on Antarctic ice shelves. The formation of these features modulates ice-shelf basal melt by influencing the flow of buoyant plumes, and influences structural stability through concentration of strain and interactions with fractures. Because of these effects, and because basal channels can change rapidly, on timescales similar to those of ice-shelf evolution, constraining the impacts of basal channels on ice shelves is necessary for predicting future ice-shelf destabilization and retreat. We suggest that future research priorities should include constraining patterns and rates of basal channel change, determining mechanisms and detailed patterns of basal melt, and quantifying the influence that channel-related fractures have on ice-shelf stability. |
author2 |
National Aeronautics and Space Administration Heising-Simons Foundation U.S. Geological Survey National Science Foundation National Science Foundation Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Alley, Karen E. Scambos, Ted A. Alley, Richard B. |
spellingShingle |
Alley, Karen E. Scambos, Ted A. Alley, Richard B. The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
author_facet |
Alley, Karen E. Scambos, Ted A. Alley, Richard B. |
author_sort |
Alley, Karen E. |
title |
The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
title_short |
The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
title_full |
The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
title_fullStr |
The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
title_full_unstemmed |
The role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
title_sort |
role of channelized basal melt in ice-shelf stability: recent progress and future priorities |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/aog.2023.5 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000058 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Annals of Glaciology Antarc* Antarctic Ice Shelf Ice Shelves |
genre_facet |
Annals of Glaciology Antarc* Antarctic Ice Shelf Ice Shelves |
op_source |
Annals of Glaciology volume 63, issue 87-89, page 18-22 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2023.5 |
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Annals of Glaciology |
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1 |
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5 |
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1811635485280305152 |