Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d intercomparison

Frank Pattyn*, Laura Perichon, Gael Durand, Lionel Favier, Olivier Gagliardini, Richard C. A. Hindmarsh, Thomas Zwinger, Torsten Albrecht, Stephen Cornford, David Docquier, Johannes J. Furst, Daniel Goldberg, G. Hilmar Gudmundsson, Angelika Humbert, Moritz Huetten, Philippe Huybrechts, Guillaume Jouvet, Thomas Kleiner, Eric Larour, Daniel MartinMathieu Morlighem, Anthony J. Payne, David Pollard, Martin Rueckamp, Oleg Rybak, Helene Seroussi, Malte Thoma, Nina Wilkens

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

158 Citations (Scopus)


Predictions of marine ice-sheet behaviour require models able to simulate grounding-line migration. We present results of an intercomparison experiment for plan-view marine ice-sheet models. Verification is effected by comparison with approximate analytical solutions for flux across the grounding line using simplified geometrical configurations (no lateral variations, no buttressing effects from lateral drag). Perturbation experiments specifying spatial variation in basal sliding parameters permitted the evolution of curved grounding lines, generating buttressing effects. The experiments showed regions of compression and extensional flow across the grounding line, thereby invalidating the boundary layer theory. Steady-state grounding-line positions were found to be dependent on the level of physical model approximation. Resolving grounding lines requires inclusion of membrane stresses, a sufficiently small grid size (

Original languageEnglish
Pages (from-to)410-422
Number of pages13
JournalJournal of Glaciology
Issue number215
Publication statusPublished - 2013


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