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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 .
Without offshore islands, the northernmost point of mainland Antarctica is Prime Head, British Antarctic Territory, Argentine Antarctica, and Chilean Antarctic Territory (63° 12' S) Southernmost: South Pole, Antarctica (90° S) Westernmost: Anti-Meridian Line, Ross Dependency (180° W) Easternmost: Anti-Meridian Line, Ross Dependency (180° E)
The easternmost and westernmost points on Earth, based on the east–west standard for describing longitude, can be found anywhere along the 180th meridian, which passes through the Arctic, Pacific, and Southern Oceans, as well as parts of Siberia (including Wrangel Island), Antarctica, and three islands of Fiji (Vanua Levu's eastern peninsula, the middle of Taveuni, and the western part of ...
A map of West Antarctica. The total volume of the entire Antarctic ice sheet is estimated at 26.92 million km 3 (6.46 million cu mi), [2] while the WAIS contains about 2.1 million km 3 (530,000 cu mi) in ice that is above the sea level, and ~1 million km 3 (240,000 cu mi) in ice that is below it. [20]
² If Argentine Antarctica claims are considered (in contradiction of the Antarctic Treaty) the westernmost part is the 74ºW meridian over Antarctica. ³ If the Argentine claims on South Georgia and the South Sandwich Islands are considered, the easternmost point is Montagu Island : 58°25′S 26°23′W / 58.417°S 26.383°W / -58 ...
Without much fanfare ‒ or geological upheaval ‒ we last got a new ocean in 2021, when National Geographic Society scientists formally recognized the Southern Ocean encircling Antarctica as a ...
The Chilean Antarctic Territory, or Chilean Antarctica (Spanish: Territorio Chileno Antártico, Antártica Chilena), is a part of West Antarctica and nearby islands claimed by Chile. It comprises the region south of 60°S latitude and between longitudes 53°W and 90°W , [ 2 ] partially overlapping the Antarctic claims of Argentina ( Argentine ...
Some 98% of Antarctica is covered by the Antarctic ice sheet, the world's largest ice sheet and also its largest reservoir of fresh water. Averaging at least 1.6 km thick, the ice is so massive that it has depressed the continental bedrock in some areas more than 2.5 km below sea level; subglacial lakes of liquid water also occur (e.g., Lake ...