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Antarctica Geography 2001https://photius.com/wfb2001/antarctica/antarctica_geography.htmlSOURCE: 2001 CIA WORLD FACTBOOK Location: continent mostly south of the Antarctic Circle Geographic coordinates: 90 00 S, 0 00 E Map references: Antarctic Region Area:
Area - comparative: slightly less than 1.5 times the size of the US Land boundaries:
0 km
Coastline: 17,968 km Maritime claims: none; nineteen of 26 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 5,140 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:
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:
Irrigated land: 0 sq km (1993) 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 areas of West Antarctica; other seismic activity rare and weak; large icebergs may calve from ice shelf Environment - current issues: in 1998, NASA satellite data showed that the antarctic ozone hole was the largest on record, covering 27 million square kilometers; researchers in 1997 found that increased ultraviolet light coming through the hole damages the DNA of icefish, an antarctic fish lacking hemoglobin; ozone depletion earlier was shown to harm one-celled antarctic marine plants Geography - note:
the coldest, windiest, highest (on average), and driest continent; during summer, more solar radiation reaches the surface at the South Pole than is received at the Equator in an equivalent period; mostly uninhabitable
NOTE: The information regarding Antarctica on this page is re-published from the 2001 World Fact Book of the United States Central Intelligence Agency. No claims are made regarding the accuracy of Antarctica Geography 2001 information contained here. All suggestions for corrections of any errors about Antarctica Geography 2001 should be addressed to the CIA. |