The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 10
Articles | Volume 20, issue 10
https://doi.org/10.5194/tc-20-5675-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-5675-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 10
Research article
 | 
06 Oct 2026
Research article |  | 06 Oct 2026

Simulating jökulhlaups from an ice-marginal lake within a 2D model of subglacial drainage and basal sliding

Adam J. Hepburn, Sammie Buzzard, Andrew J. Sole, Stephen J. Livingstone, Felix Ng, Mathieu Morlighem, Elizabeth A. Bagshaw, Caroline Clason, Lisa Craw, Christine F. Dow, Samuel Doyle, Jonathan Hawkins, Matthew Peacey, and Robert Storrar

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Short summary
Lakes at glacier margins can drain beneath the ice in devastating, floods called jökulhlaups. We present the first 2D model of jökulhlaup propagation, first applying it to a synthetic glacier, before then assessing its ability to reproduce an observed record of lake fill-drain cycles in Greenland. Our results match a 17-year record of flood timing but underpredicts peak discharge likely because we are missing certain physical processes. Our results hold promise for simulating jökulhlaups.
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