Parameterization for subgrid-scale motion of ice-shelf calving fronts
- A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model. The intuitive numerical implementation diminishes numerical dispersion at the ice front and enables the application of physical boundary conditions to improve the calculation of stress and velocity fields throughout the ice-sheet-shelf system. Numerical properties of this subgrid modification are assessed in the Potsdam Parallel Ice Sheet Model (PISM-PIK) for different geometries in one and two horizontal dimensions and are verified against an analytical solution in a flow-line setup.
| Author details: | Tanja AlbrechtGND, M. Martin, M. Haseloff, Ricarda WinkelmannORCiDGND, Anders LevermannORCiDGND |
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| DOI: | https://doi.org/10.5194/tc-5-35-2011 |
| ISSN: | 1994-0416 |
| Title of parent work (English): | The Cryosphere : TC ; an interactive open access journal of the European Geosciences Union |
| Publisher: | Copernicus |
| Place of publishing: | Göttingen |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2011 |
| Publication year: | 2011 |
| Release date: | 2017/03/26 |
| Volume: | 5 |
| Issue: | 1 |
| Number of pages: | 10 |
| First page: | 35 |
| Last Page: | 44 |
| Funding institution: | German National Academic Foundation (Studienstiftung des deutschen Volkes) |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |
