Mesh plots work best on smaller data sets. We again use the small subset of the ETOPO5 data over Bermuda and make a quick-and-dirty cpt file:
grd2cpt bermuda.grd -Cocean >! bermuda.cpt
A simple mesh plot can therefore be obtained with
grdview bermuda.grd -JM5i -P -JZ2i -E135/30 -B2 -Cbermuda.cpt >! map.ps