Distribution and dynamics of Greenland subglacial lakes
Few subglacial lakes have been identified beneath the Greenland Ice Sheet (GrIS) despite extensive documentation in Antarctica, where periodic release of water can impact ice flow. Here we present an ice-sheet-wide survey of Greenland subglacial lakes, identifying 54 candidates from airborne radio-e...
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ftleedsuniv:oai:eprints.whiterose.ac.uk:147032 2023-05-15T13:34:42+02:00 Distribution and dynamics of Greenland subglacial lakes Bowling, J. Livingstone, S. Sole, A. Chu, W. 2019-06-26 text https://eprints.whiterose.ac.uk/147032/ https://eprints.whiterose.ac.uk/147032/14/s41467-019-10821-w.pdf en eng Nature Research https://eprints.whiterose.ac.uk/147032/14/s41467-019-10821-w.pdf Bowling, J., Livingstone, S. orcid.org/0000-0002-7240-5037 , Sole, A. et al. (1 more author) (2019) Distribution and dynamics of Greenland subglacial lakes. Nature Communications, 10. 2810. ISSN 2041-1723 cc_by_4 CC-BY Article PeerReviewed 2019 ftleedsuniv 2023-01-30T22:19:35Z Few subglacial lakes have been identified beneath the Greenland Ice Sheet (GrIS) despite extensive documentation in Antarctica, where periodic release of water can impact ice flow. Here we present an ice-sheet-wide survey of Greenland subglacial lakes, identifying 54 candidates from airborne radio-echo sounding, and 2 lakes from ice-surface elevation changes. These range from 0.2–5.9 km in length, and are mostly distributed away from ice divides, beneath relatively slow-moving ice. Based on our results and previous observations, we suggest three zones of formation: stable lakes in northern and eastern regions above the Equilibrium Line Altitude (ELA) but away from the interior; hydrologically-active lakes near the ELA recharged by surface meltwater and; small, seasonally-active lakes below the ELA, which form over winter and drain during the melt season. These observations provide important constraints on the GrIS's basal thermal regime and help refine our understanding of the subglacial hydrological system. Article in Journal/Newspaper Antarc* Antarctica Greenland Ice Sheet White Rose Research Online (Universities of Leeds, Sheffield & York) Greenland Ela ENVELOPE(9.642,9.642,63.170,63.170) |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
Few subglacial lakes have been identified beneath the Greenland Ice Sheet (GrIS) despite extensive documentation in Antarctica, where periodic release of water can impact ice flow. Here we present an ice-sheet-wide survey of Greenland subglacial lakes, identifying 54 candidates from airborne radio-echo sounding, and 2 lakes from ice-surface elevation changes. These range from 0.2–5.9 km in length, and are mostly distributed away from ice divides, beneath relatively slow-moving ice. Based on our results and previous observations, we suggest three zones of formation: stable lakes in northern and eastern regions above the Equilibrium Line Altitude (ELA) but away from the interior; hydrologically-active lakes near the ELA recharged by surface meltwater and; small, seasonally-active lakes below the ELA, which form over winter and drain during the melt season. These observations provide important constraints on the GrIS's basal thermal regime and help refine our understanding of the subglacial hydrological system. |
format |
Article in Journal/Newspaper |
author |
Bowling, J. Livingstone, S. Sole, A. Chu, W. |
spellingShingle |
Bowling, J. Livingstone, S. Sole, A. Chu, W. Distribution and dynamics of Greenland subglacial lakes |
author_facet |
Bowling, J. Livingstone, S. Sole, A. Chu, W. |
author_sort |
Bowling, J. |
title |
Distribution and dynamics of Greenland subglacial lakes |
title_short |
Distribution and dynamics of Greenland subglacial lakes |
title_full |
Distribution and dynamics of Greenland subglacial lakes |
title_fullStr |
Distribution and dynamics of Greenland subglacial lakes |
title_full_unstemmed |
Distribution and dynamics of Greenland subglacial lakes |
title_sort |
distribution and dynamics of greenland subglacial lakes |
publisher |
Nature Research |
publishDate |
2019 |
url |
https://eprints.whiterose.ac.uk/147032/ https://eprints.whiterose.ac.uk/147032/14/s41467-019-10821-w.pdf |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) |
geographic |
Greenland Ela |
geographic_facet |
Greenland Ela |
genre |
Antarc* Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctica Greenland Ice Sheet |
op_relation |
https://eprints.whiterose.ac.uk/147032/14/s41467-019-10821-w.pdf Bowling, J., Livingstone, S. orcid.org/0000-0002-7240-5037 , Sole, A. et al. (1 more author) (2019) Distribution and dynamics of Greenland subglacial lakes. Nature Communications, 10. 2810. ISSN 2041-1723 |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766056457047900160 |