Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf
Knowledge gaps about how the ocean melts Antarctica’s ice shelves, borne from a lack of observations, lead to large uncertainties in sea level predictions. Using high-resolution maps of the underside of Dotson Ice Shelf, West Antarctica, we reveal the imprint that ice shelf basal melting leaves on t...
Published in: | Science Advances |
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American Association for the Advancement of Science
2024
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/171578/ https://doi.org/10.1126/sciadv.adn9188 https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:171578 2024-09-15T17:44:55+00:00 Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf Wåhlin, Anna Alley, Karen E. Begeman, Carolyn Hegrenæs, Øyvind Yuan, Xiaohan Graham, Alastair G. C. Hogan, Kelly Davis, Peter E. D. Dotto, Tiago S. Eayrs, Clare Hall, Robert A. Holland, David M. Kim, Tae Wan Larter, Robert D. Ling, Li Muto, Atsuhiro Pettit, Erin C. Schmidt, Britney E. Snow, Tasha Stedt, Filip Washam, Peter M. Wahlgren, Stina Wild, Christian Wellner, Julia Zheng, Yixi Heywood, Karen J. 2024-08-02 application/pdf https://orca.cardiff.ac.uk/id/eprint/171578/ https://doi.org/10.1126/sciadv.adn9188 https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf en eng American Association for the Advancement of Science https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf Wåhlin, Anna, Alley, Karen E., Begeman, Carolyn, Hegrenæs, Øyvind, Yuan, Xiaohan, Graham, Alastair G. C. https://orca.cardiff.ac.uk/view/cardiffauthors/A2850103D.html, Hogan, Kelly, Davis, Peter E. D., Dotto, Tiago S., Eayrs, Clare, Hall, Robert A., Holland, David M., Kim, Tae Wan, Larter, Robert D., Ling, Li, Muto, Atsuhiro, Pettit, Erin C., Schmidt, Britney E., Snow, Tasha, Stedt, Filip, Washam, Peter M., Wahlgren, Stina, Wild, Christian, Wellner, Julia, Zheng, Yixi and Heywood, Karen J. 2024. Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf. Science Advances 10 (31) , eadn9188. 10.1126/sciadv.adn9188 https://doi.org/10.1126/sciadv.adn9188 file https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf doi:10.1126/sciadv.adn9188 cc_by_4_0 Article PeerReviewed 2024 ftunivcardiff https://doi.org/10.1126/sciadv.adn9188 2024-09-03T23:52:30Z Knowledge gaps about how the ocean melts Antarctica’s ice shelves, borne from a lack of observations, lead to large uncertainties in sea level predictions. Using high-resolution maps of the underside of Dotson Ice Shelf, West Antarctica, we reveal the imprint that ice shelf basal melting leaves on the ice. Convection and intermittent warm water intrusions form widespread terraced features through slow melting in quiescent areas, while shear-driven turbulence rapidly melts smooth, eroded topographies in outflow areas, as well as enigmatic teardrop-shaped indentations that result from boundary-layer flow rotation. Full-thickness ice fractures, with bases modified by basal melting and convective processes, are observed throughout the area. This new wealth of processes, all active under a single ice shelf, must be considered to accurately predict future Antarctic ice shelf melt. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica Cardiff University: ORCA (Online Research @ Cardiff) Science Advances 10 31 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
language |
English |
description |
Knowledge gaps about how the ocean melts Antarctica’s ice shelves, borne from a lack of observations, lead to large uncertainties in sea level predictions. Using high-resolution maps of the underside of Dotson Ice Shelf, West Antarctica, we reveal the imprint that ice shelf basal melting leaves on the ice. Convection and intermittent warm water intrusions form widespread terraced features through slow melting in quiescent areas, while shear-driven turbulence rapidly melts smooth, eroded topographies in outflow areas, as well as enigmatic teardrop-shaped indentations that result from boundary-layer flow rotation. Full-thickness ice fractures, with bases modified by basal melting and convective processes, are observed throughout the area. This new wealth of processes, all active under a single ice shelf, must be considered to accurately predict future Antarctic ice shelf melt. |
format |
Article in Journal/Newspaper |
author |
Wåhlin, Anna Alley, Karen E. Begeman, Carolyn Hegrenæs, Øyvind Yuan, Xiaohan Graham, Alastair G. C. Hogan, Kelly Davis, Peter E. D. Dotto, Tiago S. Eayrs, Clare Hall, Robert A. Holland, David M. Kim, Tae Wan Larter, Robert D. Ling, Li Muto, Atsuhiro Pettit, Erin C. Schmidt, Britney E. Snow, Tasha Stedt, Filip Washam, Peter M. Wahlgren, Stina Wild, Christian Wellner, Julia Zheng, Yixi Heywood, Karen J. |
spellingShingle |
Wåhlin, Anna Alley, Karen E. Begeman, Carolyn Hegrenæs, Øyvind Yuan, Xiaohan Graham, Alastair G. C. Hogan, Kelly Davis, Peter E. D. Dotto, Tiago S. Eayrs, Clare Hall, Robert A. Holland, David M. Kim, Tae Wan Larter, Robert D. Ling, Li Muto, Atsuhiro Pettit, Erin C. Schmidt, Britney E. Snow, Tasha Stedt, Filip Washam, Peter M. Wahlgren, Stina Wild, Christian Wellner, Julia Zheng, Yixi Heywood, Karen J. Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
author_facet |
Wåhlin, Anna Alley, Karen E. Begeman, Carolyn Hegrenæs, Øyvind Yuan, Xiaohan Graham, Alastair G. C. Hogan, Kelly Davis, Peter E. D. Dotto, Tiago S. Eayrs, Clare Hall, Robert A. Holland, David M. Kim, Tae Wan Larter, Robert D. Ling, Li Muto, Atsuhiro Pettit, Erin C. Schmidt, Britney E. Snow, Tasha Stedt, Filip Washam, Peter M. Wahlgren, Stina Wild, Christian Wellner, Julia Zheng, Yixi Heywood, Karen J. |
author_sort |
Wåhlin, Anna |
title |
Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
title_short |
Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
title_full |
Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
title_fullStr |
Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
title_full_unstemmed |
Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf |
title_sort |
swirls and scoops: ice base melt revealed by multibeam imagery of an antarctic ice shelf |
publisher |
American Association for the Advancement of Science |
publishDate |
2024 |
url |
https://orca.cardiff.ac.uk/id/eprint/171578/ https://doi.org/10.1126/sciadv.adn9188 https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf |
genre |
Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Dotson Ice Shelf Ice Shelf Ice Shelves West Antarctica |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf Wåhlin, Anna, Alley, Karen E., Begeman, Carolyn, Hegrenæs, Øyvind, Yuan, Xiaohan, Graham, Alastair G. C. https://orca.cardiff.ac.uk/view/cardiffauthors/A2850103D.html, Hogan, Kelly, Davis, Peter E. D., Dotto, Tiago S., Eayrs, Clare, Hall, Robert A., Holland, David M., Kim, Tae Wan, Larter, Robert D., Ling, Li, Muto, Atsuhiro, Pettit, Erin C., Schmidt, Britney E., Snow, Tasha, Stedt, Filip, Washam, Peter M., Wahlgren, Stina, Wild, Christian, Wellner, Julia, Zheng, Yixi and Heywood, Karen J. 2024. Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf. Science Advances 10 (31) , eadn9188. 10.1126/sciadv.adn9188 https://doi.org/10.1126/sciadv.adn9188 file https://orca.cardiff.ac.uk/id/eprint/171578/7/sciadv.adn9188.pdf doi:10.1126/sciadv.adn9188 |
op_rights |
cc_by_4_0 |
op_doi |
https://doi.org/10.1126/sciadv.adn9188 |
container_title |
Science Advances |
container_volume |
10 |
container_issue |
31 |
_version_ |
1810492600239521792 |