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Capabilities and performance of Elmer/Ice, a new-generation ice sheet model

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Academic year: 2017

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Fig. 2. Evolution of the L 2 relative error norm between two con- con-secutive solutions of the Stokes system, δ u p ,u p+1 , as a function of the non-linear iteration, for a switch criterion from the Picard to the Newton scheme of 10 −6 (Picard only, blac
Fig. 4. Efficiency for a weak scalability experiment using the block preconditioner for an approximate number of nodes in all meshes of 4200 and meshes from 0.708 × 10 6 nodes up to 4.58 × 10 6 nodes.
Fig. 6. Ratio 1(h) obtained with the Robin (black curves) and con- con-trol (red curves) inverse methods for perturbations of the  enhance-ment factor to the viscosity E η (x, y).
Fig. 7. Comparison of the obtained inverted enhancement factor field for the control method assuming only changes in a  horizon-tal plane (E η (x, y), left) or changes in all 3 directions (E η (x, y, z), right)

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