Articles | Volume 15, issue 1
The Cryosphere, 15, 113–132, 2021
https://doi.org/10.5194/tc-15-113-2021
The Cryosphere, 15, 113–132, 2021
https://doi.org/10.5194/tc-15-113-2021
Research article
07 Jan 2021
Research article | 07 Jan 2021

Drivers of Pine Island Glacier speed-up between 1996 and 2016

Jan De Rydt et al.

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Cited articles

Alley, K. E., Scambos, T. A., Alley, R. B., and Holschuh, N.: Troughs developed in ice-stream shear margins precondition ice shelves for ocean-driven breakup, Sci. Adv., 5, 1–8, https://doi.org/10.1126/sciadv.aax2215, 2019. a, b, c
Arndt, J. E., Larter, R. D., Friedl, P., Gohl, K., Höppner, K., and the Science Team of Expedition PS104: Bathymetric controls on calving processes at Pine Island Glacier, The Cryosphere, 12, 2039–2050, https://doi.org/10.5194/tc-12-2039-2018, 2018. a, b, c
Arthern, R. J. and Williams, C. R.: The sensitivity of West Antarctica to the submarine melting feedback, Geophys. Res. Lett., 44, 2352–2359, https://doi.org/10.1002/2017GL072514, 2017. a
Arthern, R. J., Hindmarsh, R. C., and Williams, C. R.: Flow speed within the Antarctic ice sheet and its controls inferred from satellite observations, J. Geophys. Res.-Earth, 120, 1171–1188, https://doi.org/10.1002/2014JF003239, 2015. a
Bamber, J. L. and Bindschadler, R. A.: An improved elevation dataset for climate and ice-sheet modelling: validation with satellite imagery, Ann. Glaciol., 25, 439–444, https://doi.org/10.3189/S0260305500014427, 1997. a
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Short summary
We used satellite observations and numerical simulations of Pine Island Glacier, West Antarctica, between 1996 and 2016 to show that the recent increase in its flow speed can only be reproduced by computer models if stringent assumptions are made about the material properties of the ice and its underlying bed. These assumptions are not commonly adopted in ice flow modelling, and our results therefore have implications for future simulations of Antarctic ice flow and sea level projections.