<i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"

Forty years of satellite imagery reveal that meltwater lakes on the margin of the Greenland Ice Sheet have expanded substantially inland to higher elevations with warming. These lakes are important because they provide a mechanism for bringing water to the ice bed, causing sliding. Inland expansion...

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Main Authors: M. R. van den Broeke, J. T. M. Lenaerts, J. H. van Angelen, S. de la Peña, I. M. Howat
Format: Article
Language:English
Published: Copernicus Publications 2013-02-01
Series:The Cryosphere
Online Access:http://www.the-cryosphere.net/7/201/2013/tc-7-201-2013.pdf
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author M. R. van den Broeke
J. T. M. Lenaerts
J. H. van Angelen
S. de la Peña
I. M. Howat
author_facet M. R. van den Broeke
J. T. M. Lenaerts
J. H. van Angelen
S. de la Peña
I. M. Howat
author_sort M. R. van den Broeke
collection DOAJ
description Forty years of satellite imagery reveal that meltwater lakes on the margin of the Greenland Ice Sheet have expanded substantially inland to higher elevations with warming. These lakes are important because they provide a mechanism for bringing water to the ice bed, causing sliding. Inland expansion of lakes could accelerate ice flow by bringing water to previously frozen bed, potentially increasing future rates of mass loss. Increasing lake elevations closely follow the rise of the mass balance equilibrium line over much of the ice sheet, suggesting no physical limit on lake expansion. Data are not yet available to detect a corresponding change in ice flow, and the potential effects of lake expansion on ice sheet dynamics are not included in ice sheet models.
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1994-0424
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spelling doaj.art-41b1cd3f34114c99b8027c2730b21edc2022-12-22T00:08:37ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242013-02-017120120410.5194/tc-7-201-2013<i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"M. R. van den BroekeJ. T. M. LenaertsJ. H. van AngelenS. de la PeñaI. M. HowatForty years of satellite imagery reveal that meltwater lakes on the margin of the Greenland Ice Sheet have expanded substantially inland to higher elevations with warming. These lakes are important because they provide a mechanism for bringing water to the ice bed, causing sliding. Inland expansion of lakes could accelerate ice flow by bringing water to previously frozen bed, potentially increasing future rates of mass loss. Increasing lake elevations closely follow the rise of the mass balance equilibrium line over much of the ice sheet, suggesting no physical limit on lake expansion. Data are not yet available to detect a corresponding change in ice flow, and the potential effects of lake expansion on ice sheet dynamics are not included in ice sheet models.http://www.the-cryosphere.net/7/201/2013/tc-7-201-2013.pdf
spellingShingle M. R. van den Broeke
J. T. M. Lenaerts
J. H. van Angelen
S. de la Peña
I. M. Howat
<i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
The Cryosphere
title <i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
title_full <i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
title_fullStr <i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
title_full_unstemmed <i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
title_short <i>Brief Communication</i> "Expansion of meltwater lakes on the Greenland Ice Sheet"
title_sort i brief communication i expansion of meltwater lakes on the greenland ice sheet
url http://www.the-cryosphere.net/7/201/2013/tc-7-201-2013.pdf
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