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Terra Australis
For at least 2,000 twelvemonth philosopher believed that the globular Earth must have a big nameless continent at the bottom of the Earth to provide symmetry with the big continent to the north . On maps this immense continent was called " Terra Australis " or Southern Land . European finally sighted the ice rink of Antarctica in the 18th 100 . Dec. 14 , 2011 , is the hundredth day of remembrance of the first expedition to turn over the South Pole , led by Roald Amundsen . In the next section , we will see how Antarctica fits into the context of the southernmost part of Earth .
Continental Extremes
Antarctica has the highest summit and coldest average temperature of all the continents . With an area of 5.4 - million - square miles ( 14 - million - satisfying kilometers ) , Antarctica covers more or less less than 1.5 times the area of the United States . ocean trash is frozen salinity water . The area of ocean glass varies considerably throughout the year . The meth level best is in September during southern winter . The minimum is in February .
Fresh Frozen Reservoir
All but 0.32 percent of the continent is covered by the Antarctic Ice Sheet , which is the world ’s largest reservoir of refreshing pee ( albeit in frozen cast ) . The ice averages 1 mile thick ( 1.6 km).The Transantarctic Mountains separate the continent into East and West sections . At 2,175 miles long ( 3,500 klick ) , the Transantarctic scope is one of the longest mountain pasture on Earth .
Population: Zero
Squares on the single-valued function indicate main south-polar facilities engage by the national Antarctic programs in the Antarctic treaty domain , 2009.Antarctica is the cold , windiest and driest of all the Continent . The cold temperature recorded in Antarctica was minus-128.6 degrees Fahrenheit ( minus-89.2 degrees Celsius ) at the Russian Vostok station in 1983.Antarctica has no indigenous population . A number of research stations are scatter across the continent . At its peak , in the summertime , the continent ’s universe swells to most 4,000 mass . In wintertime , that bit dribble to around 1,000.Very few vertebrate - animal coinage last in Antarctica . Several types of penguin , petrels , seals and whales call the region home . Eight specie of mite and three mintage of collembolan ( hexapods similar to worm ) have been regain . moss , lichens , algae and microorganisms survive there , resort to a dormant country when circumstance become too extreme .
Shifting Plates
The dodo phonograph record of continents that are widely separated today show that once they were adjacent . begin about 500 - million - years ago , the supercontinent Gondwana consisted of what is now Antarctica , South America , Africa , India and Australia . For a time , the state that now comprises East Antarctica was situate on Earth ’s equator . The shifting plates of Earth ’s crust carried the continents apart and move them to their current locations . By the Mesozoic epoch , Gondwana had dissever up and the ground of Antarctica and Australia , still bring together , had moved to the south arctic region . The Earth as a whole had a warmer climate than it does today , so several coinage of dinosaur flourish in Antarctica from about 140 - to-100 - million - class ago .
Suspicions Confirmed
former cartographers indicated a immense continent in the south arctic region despite the fact that no traveler had ever described such soil . For 2,000 year philosophers had assumed the universe of this " Terra Australis " ( Southern Land ) to continue the proportion of the Earth ’s land mint . By the 18th C the conception of Terra Australis was forsake because no such southern land mass had been find . The name " Australis " was enforce to what is now send for Australia . In 1820 the first confirmed sighting of Antarctica was made , and by 20 years subsequently it was show that Antarctica comprised an entire continent and not just a grouping of island . The first explorer to reach the South Pole were led by the Norwegian Roald Amundsen , beat a vie British political party lead by Robert Scott . Both parties cross the Ross Ice Shelf to approach the rod . Amundsen ’s party move around nearly 800 miles ( 1285 kilometre ) , reaching the pole on Dec. 14 , 1911 . The party returned along the same route with no casualties . The vie party lead by Robert Scott journey a itinerary 60 miles ( 96 km ) longer , reaching the perch 34 days after Amundsen . Scott and his integral company perished on the homecoming trip .
Territorial Claims
Seven supreme states make territorial claim to Antarctic land . The Fact Book of the United States Central Intelligence Agency states , " Twenty - one of 28 south-polar consultative country have made no call to south-polar territory ( although Russia and the United States have set aside the right hand to do so ) and they do not recognise the title of the other countries . "
