@Antarctica:Geography
Location: continent mostly south of the Antarctic Circle
Map references: Antarctic Region
Area:
total area: 14 million sq km (est.)
land area: 14 million sq km (est.)
comparative area: slightly less than 1.5 times the size of the US
note: second-smallest continent (after Australia)
Land boundaries: none, but see entry on International disputes
Coastline: 17,968 km
Maritime claims: none, but see entry on International Disputes
International disputes: Antarctic Treaty defers claims (see Antarctic Treaty Summary below); sections (some overlapping) claimed by Argentina, Australia, Chile, France (Adelie Land), New Zealand (Ross Dependency), Norway (Queen Maud Land), and UK; the US and most other nations do not recognize the territorial claims of other nations and have made no claims themselves (the US reserves the right to do so); no formal claims have been made in the sector between 90 degrees west and 150 degrees west
Climate: severe low temperatures vary with latitude, elevation, and distance from the ocean; East Antarctica is colder than West Antarctica because of its higher elevation; Antarctic Peninsula has the most moderate climate; higher temperatures occur in January along the coast and average slightly below freezing
Terrain: about 98% thick continental ice sheet and 2% barren rock, with average elevations between 2,000 and 4,000 meters; mountain ranges up to 4,897 meters high; ice-free coastal areas include parts of southern Victoria Land, Wilkes Land, the Antarctic Peninsula area, and parts of Ross Island on McMurdo Sound; glaciers form ice shelves along about half of the coastline, and floating ice shelves constitute 11% of the area of the continent