The Cryosphere
The Cryosphere
TC
Articles | Volume 16, issue 6
Articles | Volume 16, issue 6
https://doi.org/10.5194/tc-16-2421-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-2421-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 6
Research article
 | 
23 Jun 2022
Research article |  | 23 Jun 2022

Controls on Greenland moulin geometry and evolution from the Moulin Shape model

Lauren C. Andrews, Kristin Poinar, and Celia Trunz

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Latest update: 23 Apr 2025
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Short summary
We introduce a model for moulin geometry motivated by the wide range of sizes and shapes of explored moulins. Moulins comprise 10–14 % of the Greenland englacial–subglacial hydrologic system and act as time-varying water storage reservoirs. Moulin geometry can vary approximately 10 % daily and over 100 % seasonally. Moulin shape modulates the efficiency of the subglacial system that controls ice flow and should thus be included in hydrologic models.
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