Authors: Durand, Gäel; Gagliardini, Olivier; Zwinger, Thomas; Le Meur, Emmanuel; Hindmarsh, Richard C.A.

Source: Annals of Glaciology, Volume 50, Number 52, October 2009 , pp. 109-114(6)

Publisher: International Glaciological Society

Abstract:

Using the finite-element code Elmer, we show that the full Stokes modeling of the ice-sheet/ice-shelf transition we propose can give consistent predictions of grounding-line migration. Like other marine ice-sheet models our approach is highly sensitive to the chosen mesh resolution. However, with a grid size down to <5 km in the vicinity of the grounding line, predictions start to be robust because: (1) whatever the grid size (<5 km) the steady-state grounding-line position is sensibly the same (6 km standard deviation), and (2) with a grid-size refinement in the vicinity of the grounding line (200 m), the steady-state solution is independent of the applied perturbation in fluidity, provided this perturbation remains monotonic.

Document Type: Research article

DOI: http://dx.doi.org/10.3189/172756409789624283

Publication date: 2009-10-01

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• The Annals of Glaciology is a peer-reviewed, thematic journal published 2 to 4 times a year by the International Glaciological Society (IGS). Publication frequency is determined and volume/issue numbers assigned by the IGS Council on a year-to-year basis and with a lead time of 3 to 4 years. The Annals of Glaciology is included in the ISI Science Citation Index from volume 50, number 50 onwards.

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