Articles | Volume 16, issue 2
https://doi.org/10.5194/tc-16-581-2022
https://doi.org/10.5194/tc-16-581-2022
Research article
 | 
17 Feb 2022
Research article |  | 17 Feb 2022

Geometric controls of tidewater glacier dynamics

Thomas Frank, Henning Åkesson, Basile de Fleurian, Mathieu Morlighem, and Kerim H. Nisancioglu

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Cited articles

Åkesson, H., Morlighem, M., Nisancioglu, K. H., Svendsen, J. I., and Mangerud, J.: Atmosphere-driven ice sheet mass loss paced by topography: Insights from modelling the south-western Scandinavian Ice Sheet, Quaternary Sci. Rev., 195, 32–47, https://doi.org/10.1016/j.quascirev.2018.07.004, 2018a. a, b, c
Åkesson, H., Nisancioglu, K. H., and Nick, F. M.: Impact of Fjord Geometry on Grounding Line Stability, Front. Earth Sci., 6, 71, https://doi.org/10.3389/feart.2018.00071, 2018b. a, b, c, d, e, f, g, h
Åkesson, H., Gyllencreutz, R., Mangerud, J., Svendsen, J. I., Nick, F. M., and Nisancioglu, K. H.: Rapid retreat of a Scandinavian marine outlet glacier in response to warming at the last glacial termination, Quaternary Sci. Rev., 250, 106645, https://doi.org/10.1016/j.quascirev.2020.106645, 2020. a, b
Åkesson, H., Morlighem, M., O'Regan, M., and Jakobsson, M.: Future projections of Petermann Glacier under ocean warming depend strongly on friction law, J. Geophys. Res.-Earth, 126, e2020JF005921, https://doi.org/10.1029/2020JF005921, 2021. a
Asay-Davis, X. S., Cornford, S. L., Durand, G., Galton-Fenzi, B. K., Gladstone, R. M., Gudmundsson, G. H., Hattermann, T., Holland, D. M., Holland, D., Holland, P. R., Martin, D. F., Mathiot, P., Pattyn, F., and Seroussi, H.: Experimental design for three interrelated marine ice sheet and ocean model intercomparison projects: MISMIP v. 3 (MISMIP +), ISOMIP v. 2 (ISOMIP +) and MISOMIP v. 1 (MISOMIP1), Geosci. Model Dev., 9, 2471–2497, https://doi.org/10.5194/gmd-9-2471-2016, 2016. a
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Short summary
The shape of a fjord can promote or inhibit glacier retreat in response to climate change. We conduct experiments with a synthetic setup under idealized conditions in a numerical model to study and quantify the processes involved. We find that friction between ice and fjord is the most important factor and that it is possible to directly link ice discharge and grounding line retreat to fjord topography in a quantitative way.