Geographic coordinates:
90 00 S, 0 00 E
Map references:
Antarctic Region
Area:
total: 14 million sq km
note: fifth-largest continent, following Asia, Africa, North
America, and South America, but larger than Australia and the
subcontinent of Europe
land: 14 million sq km (280,000 sq km ice-free, 13.72 million sq km
ice-covered) (est.)
Area - comparative:
slightly less than 1.5 times the size of the US
Land boundaries: 0 km note: see entry on International disputes
Coastline:
17,968 km
Maritime claims:
none; 20 of 27 Antarctic consultative nations have made no claims
to Antarctic territory (although Russia and the US have reserved the
right to do so) and do not recognize the claims of the other
nations; also see the Disputes - international entry
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 nearly 5,000 meters; 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
Elevation extremes:
lowest point: Bentley Subglacial Trench -2,555 m
highest point: Vinson Massif 4,897 m
note: the lowest known land point in Antarctica is hidden in the
Bentley Subglacial Trench; at its surface is the deepest ice yet
discovered and the world's lowest elevation not under seawater