GMT SCRIPTS: These scripts and associated files are useful for plotting maps in and arround the Ross Sea in Antarctica. They produce a figure close to that seen above. Here is the README file that goes along with the scripts.
SRIDHAR ANANDAKRISHNAN has an excellent web site containing many Antarctic related links. He also compiled the ADD data for GMT, which can be downloaded from HERE.
BEDMAP: A new ice thickness and subglacial topographic model of the Antarctic.
ADGRAV: Antarctic digital gravity synthesis