Livingstone, S.J. orcid.org/0000-0002-7240-5037, Sole, A.J. orcid.org/0000-0001-5290-8967, Storrar, R.D. orcid.org/0000-0003-4738-0082 et al. (3 more authors) (Submitted: 2019) Brief Communication: Outburst floods triggered by periodic drainage of subglacial lakes, Isunguata Sermia, West Greenland. The Cryosphere Discussions. ISSN 1994-0432 (Submitted)
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 during August 2014 and August 2015, and all three characterised by 2–3-year refill periods. The 2015 drainage flooded the foreland aggrading 8 m of the proglacial channel, confirming the ice-surface elevation anomalies as subglacial water bodies and demonstrating how subglacial lake drainages can significantly modify proglacial environments. These subglacial lakes offer accessible targets for future geophysical investigations and exploration.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Author(s) 2019. 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: | 02 Aug 2019 09:03 |
Last Modified: | 06 Aug 2019 17:00 |
Status: | Submitted |
Publisher: | European Geosciences Union |
Identification Number: | 10.5194/tc-2019-137 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149200 |