The Cryosphere
The Cryosphere
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Articles | Volume 12, issue 12
Articles | Volume 12, issue 12
https://doi.org/10.5194/tc-12-3931-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-12-3931-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 12
Research article
 | 
19 Dec 2018
Research article |  | 19 Dec 2018

A confined–unconfined aquifer model for subglacial hydrology and its application to the Northeast Greenland Ice Stream

Sebastian Beyer, Thomas Kleiner, Vadym Aizinger, Martin Rückamp, and Angelika Humbert

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Short summary
The evolution of subglacial channels below ice sheets is very important for the dynamics of glaciers as the water acts as a lubricant. We present a new numerical model (CUAS) that generalizes existing approaches by accounting for two different flow situations within a single porous medium layer: (1) a confined aquifer if sufficient water supply is available and (2) an unconfined aquifer, otherwise. The model is applied to artificial scenarios as well as to the Northeast Greenland Ice Stream.
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