arXiv
Open Access
2019
A full Stokes subgrid model for simulation of grounding line migration in ice sheets
Gong Cheng
Per Lötstedt
Lina von Sydow
Abstrak
The full Stokes equations are solved by a finite element method for simulation of large ice sheets and glaciers. The simulation is particularly sensitive to the discretization of the grounding line which separates the ice resting on the bedrock and the ice floating on water and is moving in time. The boundary conditions at the ice base are enforced by Nitsche's method and a subgrid treatment of the elements in the discretization close to the grounding line. Simulations with the method in two dimensions for an advancing and a retreating grounding line illustrate the performance of the method. It is implemented in the two dimensional version of the open source code Elmer/ICE.
Topik & Kata Kunci
Penulis (3)
G
Gong Cheng
P
Per Lötstedt
L
Lina von Sydow
Akses Cepat
Informasi Jurnal
- Tahun Terbit
- 2019
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