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Antarctica

The second smallest continent, mostly south of the Antarctic Circle.

Area: 14.2 million sq. km (5.5 million sq. mi.).

Geographic South Pole: Earth's southernmost point, at latitude 90°S, where all lines of longitude meet.

Magnetic South Pole: The magnetic South Pole shifts about 5 miles (km) a year and is now located at about 66°S and 139°E on the Adélie Coast of Antarctica.

Terrain: About 98% thick ice sheet and 2% barren rock; glaciers form ice shelves along about half of the coastline, and floating ice shelves constitute 11% of the area of the continent. Ice sheet: The continental ice sheet contains approximately 7 million cubic miles (30 million cu km) of ice, representing about 90% of the world's total. Major ice shelves: Amery, Filchner, Larsen, Ronne, Ross. Ice shelves make up about 10% of Antarctica's ice, and are floating sheets of ice attached to land that project out into coastal waters.

Climate: The coldest, windiest, driest continent.

Regions: East Antarctica (c. 3,000,000 sq. mi./7,770,000 sq. km), the largest portion of the continent, is a high, ice-covered plateau. West Antarctica (c. 2,500,000 sq. mi./6,475,000 sq. km), is an archipelago of mountainous islands connected by ice. A mountain range divides them.

Elevation extremes: Lowest point: Bentley Subglacial Trench –8,327 ft. below sea level (–2,538 m)—the lowest land elevation is hidden within the trench. Highest point: Vinson Massif 16,066 ft. (4,897 m), Ellsworth Mountains.


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Polar RegionsThe Arctic

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