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Warming of SE Greenland shelf waters in 2016 primes large glacier for runaway retreat

Suzanne Bevan Orcid Logo, Adrian Luckman Orcid Logo, Douglas I. Benn, Tom Cowton Orcid Logo, Joe Todd Orcid Logo

The Cryosphere Discussion

Swansea University Authors: Suzanne Bevan Orcid Logo, Adrian Luckman Orcid Logo

DOI (Published version): 10.5194/tc-2018-260

Abstract

Kangerdluqssuaq Glacier in south-east Greenland has now retreated further inland than at any time in the past 33 years and is fast approaching a region of retrograde bedslope, meaning that continued rapid retreat is likely. Here we show that the current retreat was driven by anomalously warm surface...

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Published in: The Cryosphere Discussion
Published: Copernicus GmbH
Online Access: http://dx.doi.org/10.5194/tc-2018-260
URI: https://cronfa.swan.ac.uk/Record/cronfa62741
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Abstract: Kangerdluqssuaq Glacier in south-east Greenland has now retreated further inland than at any time in the past 33 years and is fast approaching a region of retrograde bedslope, meaning that continued rapid retreat is likely. Here we show that the current retreat was driven by anomalously warm surface water on the continental shelf during 2016. The warm surface water likely penetrated the fjord and weakened the mixture of sea ice and icebergs known as mélange, which is normally rigid enough to inhibit calving in winter. As Kangerdlugssuaq Glacier continued to calve almost continuously throughout 2017 and2018 it accelerated by 35% and thinned by 35 m.
Item Description: Manuscript under review for journal The Cryosphere
College: Faculty of Science and Engineering