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physics.comp-ph2021
Increasing stable time-step sizes of the free-surface problem arising in ice-sheet simulations
André Löfgren, Josefin Ahlkrona, Christian Helanow
Numerical models for predicting future ice-mass loss of the Antarctic and Greenland ice sheet requires accurately representing their dynamics. Unfortunately, ice-sheet models suffe…
physics.comp-ph2017★ 21 cited
Galerkin Least-Squares Stabilization in Ice Sheet Modeling - Accuracy, Robustness, and Comparison to other Techniques
Christian Helanow, Josefin Ahlkrona
We investigate the accuracy and robustness of one of the most common methods used in glaciology for the discretization of the -Stokes equations: equal order finite el…
physics.comp-ph2015★ 28 cited
Dynamically coupling the non-linear Stokes equations with the Shallow Ice Approximation in glaciology: Description and first applications of the ISCAL method
Josefin Ahlkrona, Per Lötstedt, Nina Kirchner +1
We propose and implement a new method, called the Ice Sheet Coupled Approximation Levels (ISCAL) method, for simulation of ice sheet flow in large domains under long time-intervals…