Articles | Volume 11, issue 12
https://doi.org/10.5194/gmd-11-5149-2018
https://doi.org/10.5194/gmd-11-5149-2018
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, Robert M. DeConto, and Richard B. Alley

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Cited articles

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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Short summary
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.
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