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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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GMD | Articles | Volume 11, issue 12
Geosci. Model Dev., 11, 5149-5172, 2018
https://doi.org/10.5194/gmd-11-5149-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Geosci. Model Dev., 11, 5149-5172, 2018
https://doi.org/10.5194/gmd-11-5149-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 20 Dec 2018

Model description paper | 20 Dec 2018

A continuum model (PSUMEL1) of ice mélange and its role during retreat of the Antarctic Ice Sheet

David Pollard et al.
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Albrecht, T., Martin, M., Haseloff, M., Winkelmann, R., and Levermann, A.: Parameterization for subgrid-scale motion of ice-shelf calving fronts, The Cryosphere, 5, 35–44, https://doi.org/10.5194/tc-5-35-2011, 2011. 
Amundson, J. M., Truffer, M., Luthi, P., Fahnestock, M., West, M., and Motyka, R. J.: Glacier, fjord and seismic response to recent large calving events, Jakobshavn Isbrae, Greenland, Geophys. Res. Lett., 35, L22501, https://doi.org/10.1029/2008GL035281, 2008. 
Amundson, J. M., Fahnestock, M., Truffer, M., Brown, J., Luthi, M. P., and Motyka, R. J.: Ice mélange dynamics and implications for terminus stability, Jakobshavn Isbrae, Greenland, J. Geophys. Res., 115, F01001, https://doi.org/10.1029/2009JF001405, 2010. 
Arthern, R. J. and Williams, C. R.: The sensitivity of West Antarctica to submarine melting feedback, Geophys. Res. Lett., 44, 2352–2359, 2017. 
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Around the margins of ice sheets in contact with the ocean, calving of icebergs can generate large amounts of floating ice debris called "mélange". In major Greenland fjords, mélange significantly slows down ice flow from upstream. Our study applies numerical models to past and possible future episodes of rapid Antarctic Ice Sheet retreat. We find that, due to larger spatial scales, Antarctic mélange does not significantly impede flow or slow ice retreat and associated sea level rise.
Around the margins of ice sheets in contact with the ocean, calving of icebergs can generate...
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