This option constructs an idealized map of the world's geometry with a bottom depth that is not realistic. It requires no data and is highly portable. The geometry and topography are interpolated to the resolution specified by module grids.
This option is also a good starting point for investigations where idealized geometries need to be constructed. Other idealized geometries can be readily constructed with the aid of subroutine setkmt which approximates continental shapes by filling in trapezoidal areas of with zero. All that is required for input are the grid point coordinates, the coordinates of four vertices of a trapezoid, and a value for setting /kmt/ within the trapezoid.