Livingstone, S.J. orcid.org/0000-0002-7240-5037, Sole, A.J. orcid.org/0000-0001-5290-8967, Storrar, R.D. et al. (3 more authors) (2019) Brief communication : subglacial lake drainage beneath Isunguata Sermia, west Greenland : geomorphic and ice dynamic effects. The Cryosphere, 13 (10). pp. 2789-2796. ISSN 1994-0416
Abstract
We report three active subglacial lakes within 2 km of the lateral margin of Isunguata Sermia, West Greenland, identified by differencing time-stamped ArcticDEM strips. Each lake underwent one drainage–refill event between 2009 and 2017, with two lakes draining in < 1 month in August 2014 and August 2015. The 2015 drainage caused a ∼ 1-month down-glacier slowdown in ice flow and flooded the foreland, aggrading the proglacial channel by 8 m. The proglacial flooding confirms the ice-surface elevation anomalies as subglacial water bodies and demonstrates how their drainage can significantly modify proglacial environments. These subglacial lakes offer accessible targets for geophysical investigations and exploration.
Metadata
Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 The Authors. This work is distributed under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/). |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 30 Oct 2019 13:46 |
Last Modified: | 30 Oct 2019 13:46 |
Status: | Published |
Publisher: | European Geosciences Union |
Refereed: | Yes |
Identification Number: | https://doi.org/10.5194/tc-13-2789-2019 |