Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet
The evolution in number, area and volume of ice-marginal lakes in western Greenland is very poorly documented or understood. It is important to understand ice-marginal lake evolutions because they provide an element of meltwater retention, affect ice-margin character and behaviour, and potentially g...
Published in: | Global and Planetary Change |
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Online Access: | https://eprints.whiterose.ac.uk/81771/ https://doi.org/10.1016/j.gloplacha.2014.02.009 |
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ftleedsuniv:oai:eprints.whiterose.ac.uk:81771 2023-05-15T16:21:18+02:00 Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet Carrivick, JL Quincey, DJ 2014-05 https://eprints.whiterose.ac.uk/81771/ https://doi.org/10.1016/j.gloplacha.2014.02.009 unknown Elsevier Carrivick, JL and Quincey, DJ (2014) Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet. Global and Planetary Change, 116. 156 - 163. ISSN 0921-8181 Article NonPeerReviewed 2014 ftleedsuniv https://doi.org/10.1016/j.gloplacha.2014.02.009 2023-01-30T21:29:35Z The evolution in number, area and volume of ice-marginal lakes in western Greenland is very poorly documented or understood. It is important to understand ice-marginal lake evolutions because they provide an element of meltwater retention, affect ice-margin character and behaviour, and potentially glacier dynamics. This study uses repeat satellite imagery acquired between 1987 and 2010 to reveal a net 44% (±. 6.5%) increase in the number of lakes, a net 20% (±. 6.5%) expansion in total lake surface area and an increase of 12% (±. 3.3%) in the estimated volume of meltwater retained along a 1300. km length of the ice margin in western Greenland. Whilst ~. 12% (±. 1.6%) of the ice margin holds lakes at any one time there is considerable complexity in lake evolution; many lakes have coalesced, drained partially or fully, or become detached from the ice margin. The total lake volume equates to 144% of the annual runoff combined from Gothab and Jakobshavn hydrological catchments. The rate of increase in meltwater retention between 1987 and 2010 was similar to the rate of increase in ice sheet surface runoff over the same time period. If the study region is representative of the whole Greenland Ice Sheet margin then as a first-order estimate ~. 5% of the increased runoff over the last 25. years has been intercepted en route to the oceans by the increased ice-marginal lake capacity. Interactions between these ice-marginal lakes, the western Greenland Ice Sheet and climate should be determined to provide insight into future land-terminating ice-marginal conditions, runoff retention and meltwater and sediment fluxes to the oceans. . Article in Journal/Newspaper glacier Greenland Ice Sheet Jakobshavn White Rose Research Online (Universities of Leeds, Sheffield & York) Greenland Marginal Lake ENVELOPE(163.500,163.500,-74.600,-74.600) Global and Planetary Change 116 156 163 |
institution |
Open Polar |
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White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
unknown |
description |
The evolution in number, area and volume of ice-marginal lakes in western Greenland is very poorly documented or understood. It is important to understand ice-marginal lake evolutions because they provide an element of meltwater retention, affect ice-margin character and behaviour, and potentially glacier dynamics. This study uses repeat satellite imagery acquired between 1987 and 2010 to reveal a net 44% (±. 6.5%) increase in the number of lakes, a net 20% (±. 6.5%) expansion in total lake surface area and an increase of 12% (±. 3.3%) in the estimated volume of meltwater retained along a 1300. km length of the ice margin in western Greenland. Whilst ~. 12% (±. 1.6%) of the ice margin holds lakes at any one time there is considerable complexity in lake evolution; many lakes have coalesced, drained partially or fully, or become detached from the ice margin. The total lake volume equates to 144% of the annual runoff combined from Gothab and Jakobshavn hydrological catchments. The rate of increase in meltwater retention between 1987 and 2010 was similar to the rate of increase in ice sheet surface runoff over the same time period. If the study region is representative of the whole Greenland Ice Sheet margin then as a first-order estimate ~. 5% of the increased runoff over the last 25. years has been intercepted en route to the oceans by the increased ice-marginal lake capacity. Interactions between these ice-marginal lakes, the western Greenland Ice Sheet and climate should be determined to provide insight into future land-terminating ice-marginal conditions, runoff retention and meltwater and sediment fluxes to the oceans. . |
format |
Article in Journal/Newspaper |
author |
Carrivick, JL Quincey, DJ |
spellingShingle |
Carrivick, JL Quincey, DJ Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
author_facet |
Carrivick, JL Quincey, DJ |
author_sort |
Carrivick, JL |
title |
Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
title_short |
Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
title_full |
Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
title_fullStr |
Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
title_full_unstemmed |
Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet |
title_sort |
progressive increase in number and volume of ice-marginal lakes on the western margin of the greenland ice sheet |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://eprints.whiterose.ac.uk/81771/ https://doi.org/10.1016/j.gloplacha.2014.02.009 |
long_lat |
ENVELOPE(163.500,163.500,-74.600,-74.600) |
geographic |
Greenland Marginal Lake |
geographic_facet |
Greenland Marginal Lake |
genre |
glacier Greenland Ice Sheet Jakobshavn |
genre_facet |
glacier Greenland Ice Sheet Jakobshavn |
op_relation |
Carrivick, JL and Quincey, DJ (2014) Progressive increase in number and volume of ice-marginal lakes on the western margin of the Greenland Ice Sheet. Global and Planetary Change, 116. 156 - 163. ISSN 0921-8181 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2014.02.009 |
container_title |
Global and Planetary Change |
container_volume |
116 |
container_start_page |
156 |
op_container_end_page |
163 |
_version_ |
1766009316390731776 |