The Antarctic Ocean
design was adapted from a South-Pole-Centric orthogonal projection of the Southern Hemisphere obtained from NOAA/NGDC.
The bathymetry portrayed is Smith & Sandwell's predicted bathymetry from satellite altimetry, terrestrial areas are overlain with satellite mosaic images.
For more information about NOAA/NGDC products, see
www.ngdc.noaa.gov/mgg/fliers/01mgg04.html