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Antarctica and surrounding islands in relation to the Antarctic Convergence and the 60th parallel south. The following list of island groups contains the largest or most notable islands in their respective group. A more detailed list of islands in a given group may be found on their respective pages, when applicable.
Seven sovereign states – Argentina, Australia, Chile, France, New Zealand, Norway, and the United Kingdom – have made eight territorial claims in Antarctica.These countries have tended to place their Antarctic scientific observation and study facilities within their respective claimed territories; however, a number of such facilities are located outside of the area claimed by their ...
The colder, stabler East Antarctica had been experiencing cooling until the 2000s. [22] [23] Around Antarctica, the Southern Ocean has absorbed more oceanic heat than any other ocean, [24] and has seen strong warming at depths below 2,000 m (6,600 ft). [25]: 1230 Around the West Antarctic, the ocean has warmed by 1 °C (1.8 °F) since 1955. [21]
Antarctica is the coldest, windiest, and driest of Earth's continents. [1] Near the coast, the temperature can exceed 10 °C in summer and fall to below −40 °C in winter. Over the elevated inland, it can rise to about −30 °C in summer but fall below −80 °C in winter.
Colonization of Antarctica is the establishing and maintaining of control over Antarctic land for exploitation and possibly settlement. [1]Antarctica was claimed by several states since the 16th century, culminating in a territorial competition in the first half of the 20th century when its interior was explored and the first Antarctic camps and bases were set up.
The Patuxent Trough is more than 300 km long and over 15 km wide, while the Offset Rift Basin is 150 km long and 30 km wide. These three troughs all lie under and cross the so-called "ice divide" - the high ice ridge that runs all the way from the South Pole out towards the coast of West Antarctica. [16]
It is bounded by Queen Maud Land in the West and by the Ross Dependency in the East. The Australian Antarctic Territory is the largest of any claims to the continent, and covers nearly 5.9 million square kilometres. [3] This makes up about 42% of Antarctica, and would cover about 80% of Mainland Australia. [4]
West Antarctica, or Lesser Antarctica, one of the two major regions of Antarctica, is the part of that continent that lies within the Western Hemisphere, and includes the Antarctic Peninsula. It is separated from East Antarctica by the Transantarctic Mountains and is covered by the West Antarctic Ice Sheet .