ralia and the
subcontinent of Europe

Area - comparative:
slightly less than 1.5 times the size of the US

Land boundaries:
0 km
note: see entry on Disputes - international

Coastline:
17,968 km

Maritime claims:
Australia, Chile, and Argentina claim Exclusive Economic Zone (EEZ)
rights or similar over 200 nm extensions seaward from their
continental claims, but like the claims themselves, these zones are
not accepted by other countries; 21 of 28 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

Natural resources:
iron ore, chromium, copper, gold, nickel, platinum and other
minerals, and coal and hydrocarbons have been found in small
uncommercial quantities; none presently exploited; krill, finfish,
and crab have been taken by commercial fisheries

Land use:
arable land: 0%
permanent crops: 0%
other: 100% (ice 98%, barren rock 2%) (2005)

Natural hazards:
katabatic (gravity-driven) winds blow coastward from the high
interior; frequent blizzards form near the foot of the plateau;
cyclonic storms form over the ocean and move clockwise along the
coast; volcanism on Deception Island and isolated ar