Articles | Volume 18, issue 12
https://doi.org/10.5194/tc-18-5887-2024
https://doi.org/10.5194/tc-18-5887-2024
Research article
 | 
16 Dec 2024
Research article |  | 16 Dec 2024

A fast and simplified subglacial hydrological model for the Antarctic Ice Sheet and outlet glaciers

Elise Kazmierczak, Thomas Gregov, Violaine Coulon, and Frank Pattyn

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Cited articles

Aitken, A. R. A., Li, L., Kulessa, B., Schroeder, D., Jordan, T. A., Whittaker, J. M., Anandakrishnan, S., Dawson, E. J., Wiens, D. A., Eisen, O., and Siegert, M. J.: Antarctic Sedimentary Basins and Their Influence on Ice-Sheet Dynamics, Rev. Geophys., 61, e2021RG000767, https://doi.org/10.1029/2021rg000767, 2023. a
Alley, R., Blankenship, D., Rooney, S., and Bentley, C.: Water-pressure Coupling of Sliding and Bed Deformation: III. Application to Ice Stream B, Antarctica, J. Glaciol., 35, 130–139, https://doi.org/10.3189/002214389793701572, 1989. a
Alley, R. B., Holschuh, N., Parizek, B., Zoet, L. K., Riverman, K., Muto, A., Christianson, K., Clyne, E., Anandakrishnan, S., and Stevens, N. T.: GHOSTly flute music: drumlins, moats and the bed of Thwaites Glacier, Ann. Glaciol., 63, 153–157, https://doi.org/10.1017/aog.2023.43, 2022. a, b
Arnold, N. and Sharp, M.: Flow variability in the Scandinavian ice sheet: modelling the coupling between ice sheet flow and hydrology, Quaternary Sci. Rev., 21, 485–502, https://doi.org/10.1016/s0277-3791(01)00059-2, 2002. a, b
Beaud, F., Aati, S., Delaney, I., Adhikari, S., and Avouac, J.-P.: Surge dynamics of Shisper Glacier revealed by time-series correlation of optical satellite images and their utility to substantiate a generalized sliding law, The Cryosphere, 16, 3123–3148, https://doi.org/10.5194/tc-16-3123-2022, 2022. a, b
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Short summary
We introduce a new fast model for water flow beneath the ice sheet capable of handling various hydrological and bed conditions in a unified way. Applying this model to Thwaites Glacier, we show that accounting for this water flow in ice sheet model projections has the potential to greatly increase the contribution to future sea level rise.  We also demonstrate that the sensitivity of the ice sheet in response to external changes depends on the efficiency of the drainage and the bed type.
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