Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier
Recent acceleration of Greenland's ocean-terminating glaciers has substantially amplified the ice sheet's contribution to global sea level. Increased oceanic melting of these tidewater glaciers is widely cited as the likely trigger, and is thought to be highest within vigorous plumes drive...
Published in: | Geophysical Research Letters |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/localized-plumes-drive-frontwide-ocean-melting-of-a-greenlandic-tidewater-glacier(b5afe1d6-8a51-4c4a-a305-23e596e55cbd).html https://doi.org/10.1029/2018GL080763 https://research-repository.st-andrews.ac.uk/bitstream/10023/19648/1/Slater_2018_GRL_Localized_FinalPubVersion.pdf https://darchive.mblwhoilibrary.org/handle/1912/18376 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/b5afe1d6-8a51-4c4a-a305-23e596e55cbd 2024-06-23T07:53:01+00:00 Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier Slater, D. A. Straneo, F. Das, S. B. Richards, C. G. Wagner, T. J.W. Nienow, P. W. 2018-12-14 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/localized-plumes-drive-frontwide-ocean-melting-of-a-greenlandic-tidewater-glacier(b5afe1d6-8a51-4c4a-a305-23e596e55cbd).html https://doi.org/10.1029/2018GL080763 https://research-repository.st-andrews.ac.uk/bitstream/10023/19648/1/Slater_2018_GRL_Localized_FinalPubVersion.pdf https://darchive.mblwhoilibrary.org/handle/1912/18376 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/localized-plumes-drive-frontwide-ocean-melting-of-a-greenlandic-tidewater-glacier(b5afe1d6-8a51-4c4a-a305-23e596e55cbd).html info:eu-repo/semantics/openAccess Slater , D A , Straneo , F , Das , S B , Richards , C G , Wagner , T J W & Nienow , P W 2018 , ' Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier ' , Geophysical Research Letters , vol. 45 , no. 22 , pp. 12,350-12,358 . https://doi.org/10.1029/2018GL080763 Fjords Greenland ice sheet Ice-ocean interactions Plumes Submarine melting Tidewater glaciers article 2018 ftunstandrewcris https://doi.org/10.1029/2018GL080763 2024-06-13T01:09:41Z Recent acceleration of Greenland's ocean-terminating glaciers has substantially amplified the ice sheet's contribution to global sea level. Increased oceanic melting of these tidewater glaciers is widely cited as the likely trigger, and is thought to be highest within vigorous plumes driven by freshwater drainage from beneath glaciers. Yet melting of the larger part of calving fronts outside of plumes remains largely unstudied. Here we combine ocean observations collected within 100 m of a tidewater glacier with a numerical model to show that unlike previously assumed, plumes drive an energetic fjord-wide circulation which enhances melting along the entire calving front. Compared to estimates of melting within plumes alone, this fjord-wide circulation effectively doubles the glacier-wide melt rate, and through shaping the calving front has a potential dynamic impact on calving. Our results suggest that melting driven by fjord-scale circulation should be considered in process-based projections of Greenland's sea level contribution. Article in Journal/Newspaper glacier Greenland greenlandic Ice Sheet Tidewater University of St Andrews: Research Portal Greenland Geophysical Research Letters 45 22 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Fjords Greenland ice sheet Ice-ocean interactions Plumes Submarine melting Tidewater glaciers |
spellingShingle |
Fjords Greenland ice sheet Ice-ocean interactions Plumes Submarine melting Tidewater glaciers Slater, D. A. Straneo, F. Das, S. B. Richards, C. G. Wagner, T. J.W. Nienow, P. W. Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
topic_facet |
Fjords Greenland ice sheet Ice-ocean interactions Plumes Submarine melting Tidewater glaciers |
description |
Recent acceleration of Greenland's ocean-terminating glaciers has substantially amplified the ice sheet's contribution to global sea level. Increased oceanic melting of these tidewater glaciers is widely cited as the likely trigger, and is thought to be highest within vigorous plumes driven by freshwater drainage from beneath glaciers. Yet melting of the larger part of calving fronts outside of plumes remains largely unstudied. Here we combine ocean observations collected within 100 m of a tidewater glacier with a numerical model to show that unlike previously assumed, plumes drive an energetic fjord-wide circulation which enhances melting along the entire calving front. Compared to estimates of melting within plumes alone, this fjord-wide circulation effectively doubles the glacier-wide melt rate, and through shaping the calving front has a potential dynamic impact on calving. Our results suggest that melting driven by fjord-scale circulation should be considered in process-based projections of Greenland's sea level contribution. |
format |
Article in Journal/Newspaper |
author |
Slater, D. A. Straneo, F. Das, S. B. Richards, C. G. Wagner, T. J.W. Nienow, P. W. |
author_facet |
Slater, D. A. Straneo, F. Das, S. B. Richards, C. G. Wagner, T. J.W. Nienow, P. W. |
author_sort |
Slater, D. A. |
title |
Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
title_short |
Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
title_full |
Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
title_fullStr |
Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
title_full_unstemmed |
Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier |
title_sort |
localized plumes drive front-wide ocean melting of a greenlandic tidewater glacier |
publishDate |
2018 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/localized-plumes-drive-frontwide-ocean-melting-of-a-greenlandic-tidewater-glacier(b5afe1d6-8a51-4c4a-a305-23e596e55cbd).html https://doi.org/10.1029/2018GL080763 https://research-repository.st-andrews.ac.uk/bitstream/10023/19648/1/Slater_2018_GRL_Localized_FinalPubVersion.pdf https://darchive.mblwhoilibrary.org/handle/1912/18376 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland greenlandic Ice Sheet Tidewater |
genre_facet |
glacier Greenland greenlandic Ice Sheet Tidewater |
op_source |
Slater , D A , Straneo , F , Das , S B , Richards , C G , Wagner , T J W & Nienow , P W 2018 , ' Localized plumes drive front-wide ocean melting of a Greenlandic tidewater glacier ' , Geophysical Research Letters , vol. 45 , no. 22 , pp. 12,350-12,358 . https://doi.org/10.1029/2018GL080763 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/localized-plumes-drive-frontwide-ocean-melting-of-a-greenlandic-tidewater-glacier(b5afe1d6-8a51-4c4a-a305-23e596e55cbd).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2018GL080763 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
22 |
_version_ |
1802644492695633920 |