The Cryosphere
The Cryosphere
TC
Articles | Volume 13, issue 1
Articles | Volume 13, issue 1
https://doi.org/10.5194/tc-13-177-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-13-177-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 1
Research article
 | 
22 Jan 2019
Research article |  | 22 Jan 2019

Sensitivity of centennial mass loss projections of the Amundsen basin to the friction law

Julien Brondex, Fabien Gillet-Chaulet, and Olivier Gagliardini

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Short summary
Here, we apply a synthetic perturbation to the most active drainage basin of Antarctica and show that centennial mass loss projections obtained through ice flow models depend strongly on the implemented friction law, i.e. the mathematical relationship between basal drag and sliding velocities. In particular, the commonly used Weertman law considerably underestimates the sea-level contribution of this basin in comparison to two water pressure-dependent laws which rely on stronger physical bases.
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