833333

$ (5) a skipping factor (1 means all points of the topography are used; 2 means that
$     every second point is used etc). Note that nx, ny AND nskip define the resolution of the
$     finite element grid in the horizontal directions
$     again this is not used in case nx and ny are negative (random grid)
3

$ (6) the longitude and latitude of the bottom left corner of the topo file
170 -43.7

$ (7) the number of time steps in the tectonomorphic scenario
3

$ (8) the erosional time scale (exponent