# Kees' assignment

From Interactive System for Ice sheet Simulation

## Contents |

## Model equation

where

and

## Model parameters

- km/yr
- = 920
- g=9.8
- A = 1e-16
- n=3
- dx=1.0 km

## Boundary conditions

- (left boundary)

- (right boundary)

## Numerical tips

Use a staggered grid such that the are computed at the **centers** of the grid (as opposed to the vertices, as we have been doing), so

From the diffusivity, the flux is computed

- ,

where

and then the flux () can be used to compute the rate of change of the surface from