GGU-2D-SSFLOW: "Interpolation mesh" menu item

In principle, the z values can be completely defined using the previous menu items. A further defining simplification is offered by the interpolation mesh. Similarly to the FEM mesh, this interpolation mesh consists of nodes and triangles. A certain z value can be defined at the nodes. After defining an interpolation mesh you can assign these z values to the FEM mesh as the base or top of the aquifer (or, for a "leaky aquifer", as blanket layer top). These are assigned by means of linear interpolation. The interpolation mesh should (but not must) completely blanket the FEM mesh. In the simplest case possible, this may consist of one triangle. In the dialog box yoou can define the colour of visualisation for interpolationa and FEM mesh using the corresponding buttons.