Sutherland, JL orcid.org/0000-0003-0957-1523, Carrivick, JL orcid.org/0000-0002-9286-5348, Gandy, N orcid.org/0000-0003-4848-4203 et al. (3 more authors) (2020) Proglacial Lakes Control Glacier Geometry and Behavior During Recession. Geophysical Research Letters, 47 (19). e2020GL088. ISSN 0094-8276
Abstract
Ice‐contact proglacial lakes are generally absent from numerical model simulations of glacier evolution, and their effects on ice dynamics and on rates of deglaciation remain poorly quantified. Using the BISICLES ice flow model, we analyzed the effects of an ice‐contact lake on the Pukaki Glacier, New Zealand, during recession from the Last Glacial Maximum. The ice‐contact lake produced a maximum effect on grounding line recession >4 times further and on ice velocities up to 8 times faster, compared to simulations of a land‐terminating glacier forced by the same climate. The lake contributed up to 82% of cumulative grounding line recession and 87% of ice velocity during the first 300 years of the simulations, but those values decreased to just 6% and 37%, respectively, after 5,000 years. Numerical models that ignore lake interactions will, therefore, misrepresent the rate of recession especially during the transition of a land‐terminating to a lake‐terminating environment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2020, The Authors. This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) |
Keywords: | Proglacial Lake; Ice Dynamics; Ice Sheet Model; New Zealand; Last Glacial Maximum |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > River Basin Processes & Management (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Oct 2020 14:03 |
Last Modified: | 10 Nov 2021 13:17 |
Status: | Published |
Publisher: | American Geophysical Union (AGU) |
Identification Number: | 10.1029/2020gl088865 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:166557 |
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