clear;

h0 = .05;			% set topography here
lat = 30;			% set latitude here
pucks_on_ice;

h0 = -.05;			% set topography here
lat = 30;			% set latitude here
pucks_on_ice;

h0 = .05;			% set topography here
lat = 90;			% set latitude here
pucks_on_ice;

h0 = .05;			% set topography here
lat = 0;			% set latitude here
pucks_on_ice;

h0 = .05;			% set topography here
lat = -30;			% set latitude here
pucks_on_ice;

