期刊
ANNALS OF GLACIOLOGY
卷 50, 期 52, 页码 109-114出版社
CAMBRIDGE UNIV PRESS
DOI: 10.3189/172756409789624283
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资金
- Agence National de la Recherche, France [ANR-06-VULN-016-01]
- Natural Environment Research Council [bas0100027] Funding Source: researchfish
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 (200m), the steady-state solution is independent of the applied perturbation in fluidity, provided this perturbation remains monotonic.
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