Ice-marginal proglacial lakes across Greenland: present status and a possible future
Ice-marginal lakes can affect glacier dynamics but are ignored in studies of the evolution of the Greenland ice sheet (GrIS) and of peripheral mountain glaciers and ice caps (PGICs). Here we show that lakes occupy 10% of the GrIS ice margin and occur on 5% of PGICs. Ice velocity at the GrIS margin i...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2022
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ftmanchuniv:oai:e-space.mmu.ac.uk:631192 2024-05-19T07:40:42+00:00 Ice-marginal proglacial lakes across Greenland: present status and a possible future Carrivick, Jonathan L How, Penelope Lea, James M Sutherland, Jenna L Grimes, Michael Tweed, Fiona S Cornford, Stephen Quincey, Duncan J Mallalieu, Joseph 2022-06-28 text https://e-space.mmu.ac.uk/631192/8/Geophysical%20Research%20Letters%20-%202022%20-%20Carrivick%20-%20Ice%E2%80%90Marginal%20Proglacial%20Lakes%20Across%20Greenland%20%20Present%20Status%20and%20a.pdf en eng American Geophysical Union https://e-space.mmu.ac.uk/631192/ https://doi.org/10.1029/2022GL099276 10.1029/2022GL099276 https://e-space.mmu.ac.uk/631192/8/Geophysical%20Research%20Letters%20-%202022%20-%20Carrivick%20-%20Ice%E2%80%90Marginal%20Proglacial%20Lakes%20Across%20Greenland%20%20Present%20Status%20and%20a.pdf Carrivick, Jonathan L </view/creators/Carrivick=3AJonathan_L=3A=3A.html>, How, Penelope </view/creators/How=3APenelope=3A=3A.html>, Lea, James M </view/creators/Lea=3AJames_M=3A=3A.html>, Sutherland, Jenna L </view/creators/Sutherland=3AJenna_L=3A=3A.html>, Grimes, Michael </view/creators/Grimes=3AMichael=3A=3A.html>, Tweed, Fiona S </view/creators/Tweed=3AFiona_S=3A=3A.html>, Cornford, Stephen </view/creators/Cornford=3AStephen=3A=3A.html>, Quincey, Duncan J </view/creators/Quincey=3ADuncan_J=3A=3A.html> and Mallalieu, Joseph </view/creators/Mallalieu=3AJoseph=3A=3A.html> ORCID logoorcid:0000-0002-1988-8594 (2022) Ice-marginal proglacial lakes across Greenland: present status and a possible future. Geophysical Research Letters, 49 (12). e2022GL099276. ISSN 0094-8276 cc_by_4 info:eu-repo/semantics/openAccess Article PeerReviewed 2022 ftmanchuniv https://doi.org/10.1029/2022GL099276 2024-05-01T00:05:02Z Ice-marginal lakes can affect glacier dynamics but are ignored in studies of the evolution of the Greenland ice sheet (GrIS) and of peripheral mountain glaciers and ice caps (PGICs). Here we show that lakes occupy 10% of the GrIS ice margin and occur on 5% of PGICs. Ice velocity at the GrIS margin is enhanced by ∼ 25% at lakes versus on land. Mean ice discharge into lakes is ∼4.9 Gt.yr, which is ∼1% of ice discharged through marine termini. We locate thousands of subglacial overdeepenings within which 7,404 km2 of future lakes could form, all of which will be ice-marginal at some time. Future lakes in the west and east will be restricted to the margin of the GrIS and within alpine valleys, respectively. This status and possible future leads us to contend that lakes should be incorporated into projections of Greenland ice loss. Article in Journal/Newspaper glacier Greenland Ice Sheet eSpace - Manchester Metropolitan University's Research Repository Geophysical Research Letters 49 12 |
institution |
Open Polar |
collection |
eSpace - Manchester Metropolitan University's Research Repository |
op_collection_id |
ftmanchuniv |
language |
English |
description |
Ice-marginal lakes can affect glacier dynamics but are ignored in studies of the evolution of the Greenland ice sheet (GrIS) and of peripheral mountain glaciers and ice caps (PGICs). Here we show that lakes occupy 10% of the GrIS ice margin and occur on 5% of PGICs. Ice velocity at the GrIS margin is enhanced by ∼ 25% at lakes versus on land. Mean ice discharge into lakes is ∼4.9 Gt.yr, which is ∼1% of ice discharged through marine termini. We locate thousands of subglacial overdeepenings within which 7,404 km2 of future lakes could form, all of which will be ice-marginal at some time. Future lakes in the west and east will be restricted to the margin of the GrIS and within alpine valleys, respectively. This status and possible future leads us to contend that lakes should be incorporated into projections of Greenland ice loss. |
format |
Article in Journal/Newspaper |
author |
Carrivick, Jonathan L How, Penelope Lea, James M Sutherland, Jenna L Grimes, Michael Tweed, Fiona S Cornford, Stephen Quincey, Duncan J Mallalieu, Joseph |
spellingShingle |
Carrivick, Jonathan L How, Penelope Lea, James M Sutherland, Jenna L Grimes, Michael Tweed, Fiona S Cornford, Stephen Quincey, Duncan J Mallalieu, Joseph Ice-marginal proglacial lakes across Greenland: present status and a possible future |
author_facet |
Carrivick, Jonathan L How, Penelope Lea, James M Sutherland, Jenna L Grimes, Michael Tweed, Fiona S Cornford, Stephen Quincey, Duncan J Mallalieu, Joseph |
author_sort |
Carrivick, Jonathan L |
title |
Ice-marginal proglacial lakes across Greenland: present status and a possible future |
title_short |
Ice-marginal proglacial lakes across Greenland: present status and a possible future |
title_full |
Ice-marginal proglacial lakes across Greenland: present status and a possible future |
title_fullStr |
Ice-marginal proglacial lakes across Greenland: present status and a possible future |
title_full_unstemmed |
Ice-marginal proglacial lakes across Greenland: present status and a possible future |
title_sort |
ice-marginal proglacial lakes across greenland: present status and a possible future |
publisher |
American Geophysical Union |
publishDate |
2022 |
url |
https://e-space.mmu.ac.uk/631192/8/Geophysical%20Research%20Letters%20-%202022%20-%20Carrivick%20-%20Ice%E2%80%90Marginal%20Proglacial%20Lakes%20Across%20Greenland%20%20Present%20Status%20and%20a.pdf |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_relation |
https://e-space.mmu.ac.uk/631192/ https://doi.org/10.1029/2022GL099276 10.1029/2022GL099276 https://e-space.mmu.ac.uk/631192/8/Geophysical%20Research%20Letters%20-%202022%20-%20Carrivick%20-%20Ice%E2%80%90Marginal%20Proglacial%20Lakes%20Across%20Greenland%20%20Present%20Status%20and%20a.pdf Carrivick, Jonathan L </view/creators/Carrivick=3AJonathan_L=3A=3A.html>, How, Penelope </view/creators/How=3APenelope=3A=3A.html>, Lea, James M </view/creators/Lea=3AJames_M=3A=3A.html>, Sutherland, Jenna L </view/creators/Sutherland=3AJenna_L=3A=3A.html>, Grimes, Michael </view/creators/Grimes=3AMichael=3A=3A.html>, Tweed, Fiona S </view/creators/Tweed=3AFiona_S=3A=3A.html>, Cornford, Stephen </view/creators/Cornford=3AStephen=3A=3A.html>, Quincey, Duncan J </view/creators/Quincey=3ADuncan_J=3A=3A.html> and Mallalieu, Joseph </view/creators/Mallalieu=3AJoseph=3A=3A.html> ORCID logoorcid:0000-0002-1988-8594 (2022) Ice-marginal proglacial lakes across Greenland: present status and a possible future. Geophysical Research Letters, 49 (12). e2022GL099276. ISSN 0094-8276 |
op_rights |
cc_by_4 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2022GL099276 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
12 |
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1799480279705845760 |