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 and Russia reserve
the right to do so); no formal claims have been made in the sector between
90 degrees west and 150 degrees west, where, because of floating ice,
Antarctica is unapproachable from the sea
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
Natural resources:
none presently exploited; iron ore, chromium, copper, gold, nickel, platinum
and other minerals, and coal and hydrocarbons have been found in small,
uncommercial quantities
Land use:
arable land:
0%
permanent crops:
0%
meadows and pastures:
0%
forest and woodland:
0%
other:
100% (ice 98%, barren rock 2%)
Irrigated land:
0 km2

*Antarctica, Geography

Environment:
mostly uninhabitable; katabatic (gravity-driven) winds blow coastward from
the high interior; frequent blizzards form near the foot of the plateau; a
circumpolar ocean current flows clockwise along the coast as do cyclonic
storms that form over the ocean; during summer more solar radiation reaches
the surface at the South Pole than is received at the Equator in an
equivalent period; in October 1991 it was reported that the ozone shield,
which protects the Earth's surface from harmful ultraviolet radiation, had
dwindled to the lowest level ever recorded over Antarctica; active volcanism
on Deception Island and isolated areas of West Antarctica; other seismic