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Lake Vostok is the largest of Antarctica's 675 known subglacial lakes. Lake Vostok is located at the southern Pole of Cold, beneath Russia's Vostok Station under the surface of the central East Antarctic Ice Sheet, which is at 3,488 m (11,444 ft) above mean sea level. The surface of this fresh water lake is approximately 4,000 m (13,100 ft) under the surface of the ice, which places it at approximately 500 m (1,600 ft) below sea level.
Deception Island is in the South Shetland Islands close to the Antarctic Peninsula with a large and usually "safe" natural harbor, which is occasionally affected by the underlying active volcano. This island is the caldera of an active volcano, which seriously damaged local scientific stations in 1967 and 1969. The island previously held a whaling station. It is now a tourist destination with over 15,000 visitors per year. Two research stations are operated by Argentina and Spain during the summer season. While various countries have asserted sovereignty, it is still administered under the Antarctic Treaty System.
Vostok Station is a Russian research station in inland Princess Elizabeth Land, Antarctica. Founded by the Soviet Union in 1957, the station lies at the southern Pole of Cold, with the lowest reliably measured natural temperature on Earth of −89.2 °C. Research includes ice core drilling and magnetometry. Vostok was named after Vostok, the lead ship of the First Russian Antarctic Expedition captained by Fabian von Bellingshausen. The Bellingshausen Station was named after this captain.
New Swabia was a disputed Antarctic claim by Nazi Germany within the Norwegian territorial claim of Queen Maud Land and is now a cartographic name sometimes given to an area of Antarctica between 20°E and 10°W in Queen Maud Land. New Swabia was explored by Germany in early 1939 and named after that expedition's ship, Schwabenland, itself named after the German region of Swabia.
World Park Base was a non-governmental year-round Antarctic base located at Cape Evans on Ross Island in the Ross Dependency. The international environmental organization Greenpeace established World Park Base in 1987 in order to press its demand for the Antarctic Treaty nations to declare the continent of Antarctica as a World Park. This would make the entire continent off-limits to commercial exploitation and pollution, and permit only limited scientific research. Greenpeace closed down in 1991 and completely dismantled the base in 1992.
Marie Byrd Land (MBL) is an unclaimed region of Antarctica. With an area of 1,610,000 km2 (620,000 sq mi), it is the largest unclaimed territory on Earth. It was named after the wife of American naval officer Richard E. Byrd, who explored the region in the early 20th century.
Gaussberg is an extinct, 370-metre-high (1,210-foot) high volcanic cone in East Antarctica fronting on Davis Sea immediately west of Posadowsky Glacier. It is ice-free and conical in nature, having formed subglacially about 55,000 years ago. The current edifice is thought to be the remains of a once-larger mountain that has been reduced by glacial and subaerial erosion. The volcano has produced lamproite magmas, and is the youngest volcano to have produced such magmas on Earth.
Mount Takahe is a 3,460-metre-high (11,350 ft) snow-covered shield volcano in Marie Byrd Land, Antarctica, 200 kilometres (120 mi) from the Amundsen Sea. It is a c. 30-kilometre-wide (19 mi) mountain with parasitic vents and a caldera up to 8 kilometres (5 mi) wide. Most of the volcano is formed by trachytic lava flows, but hyaloclastite is also found. Snow, ice, and glaciers cover most of Mount Takahe. With a volume of 780 km3 (200 cu mi), it is a massive volcano; the parts of the edifice that are buried underneath the West Antarctic Ice Sheet are probably even larger. It is part of the West Antarctic Rift System along with eighteen other known volcanoes.
Toney Mountain is an elongated snow-covered shield volcano, 60 km (37 mi) long and rising to 3,595 m (11,795 ft) at Richmond Peak, located 56 km (35 mi) southwest of Kohler Range in Marie Byrd Land, Antarctica.
A subglacial lake is a lake that is found under a glacier, typically beneath an ice cap or ice sheet. Subglacial lakes form at the boundary between ice and the underlying bedrock, where gravitational pressure decreases the pressure melting point of ice. Over time, the overlying ice gradually melts at a rate of a few millimeters per year. Meltwater flows from regions of high to low hydraulic pressure under the ice and pools, creating a body of liquid water that can be isolated from the external environment for millions of years.
The Vestfold Hills are rounded, rocky, coastal hills, 512 square kilometres (198 sq mi) in extent, on the north side of Sorsdal Glacier on the Ingrid Christensen Coast of Princess Elizabeth Land, Antarctica. The hills are subdivided by three west-trending peninsulas bounded by narrow fjords. Most of the hills range between 30 and 90 metres in height, with the highest summit reaching nearly 160 metres (520 ft).
The Soviet Antarctic Expedition was part of the Arctic and Antarctic Research Institute of the Soviet Committee on Antarctic Research of the Academy of Sciences of the USSR. It was succeeded by the Russian Antarctic Expedition.
Dome Fuji, also called Dome F or Valkyrie Dome, is an Antarctic base located in the eastern part of Queen Maud Land. With an altitude of 3,810 metres (12,500 ft) above sea level, it is the second-highest summit or ice dome of the East Antarctic Ice Sheet and represents an ice divide. Dome F is the site of Dome Fuji Station, a research station operated by Japan.
The Schirmacher Oasis is a 25 km (16 mi) long and up to 3 km (1.9 mi) wide ice-free plateau with more than 100 freshwater lakes. It is situated in the Schirmacher Hills on the Princess Astrid Coast in Queen Maud Land in East Antarctica and is, on average, 100 m (330 ft) above sea level. With an area of 34 km2 (13 sq mi), the Schirmacher Oasis ranks among the smallest Antarctic oases and is a typical polar desert.
Antarctica is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of 14,200,000 km2 (5,500,000 sq mi). Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of 1.9 km (1.2 mi).
Andrey Petrovich Kapitsa was a Soviet and Russian geographer and Antarctic explorer, discoverer of Lake Vostok, the largest subglacial lake in Antarctica. He was a member of the Kapitsa family, a scientific dynasty in Russia.
Mount Rittmann is a volcano in Antarctica. Discovered in 1988–1989 by an Italian expedition, it was named after the volcanologist Alfred Rittmann (1893–1980). It features a 2 kilometres (1.2 mi) or 8 by 5 kilometres wide caldera which crops out from underneath the Aviator Glacier. The volcano was active during the Pliocene and into the Holocene, including large explosive eruptions; a major eruption occurred in 1254 CE and deposited tephra over much of Antarctica. Currently, the volcano is classified as dormant.
The German Antarctic Expedition (1938–1939), led by German Navy captain Alfred Ritscher (1879–1963), was the third official Antarctic expedition of the German Reich, by order of the "Commissioner for the Four Year Plan" Hermann Göring. Prussian State Councilor Helmuth Wohlthat was mandated with planning and preparation. The expedition's main objective was of economic nature, in particular the establishment of a whaling station and the acquisition of fishing grounds for a German whaling fleet in order to reduce the Reich's dependence on the import of industrial oils, fats and dietary fats. Preparations took place under strict secrecy as the enterprise was also tasked to make a feasibility assessment for a future occupation of Antarctic territory in the region between 20 ° West and 20 ° East.
Igor Alekseevich Zotikov was a Russian glaciologist, polar explorer and academic. Zotikov was best known for predicting the existence of fresh water lakes under the Antarctic ice sheet, later to be discovered as Lake Vostok. For his efforts a glacier was named after him, Zotikov Glacier.
References
- 1 2 Charlier, Roger H. (2010). "Philatelic Panorama of Some Belgian Antarctic Marine Contributions, 19th-21st Centuries: From Belgica to Princess Elisabeth". Journal of Coastal Research. 26 (2): 365. ISSN 0749-0208. JSTOR 40605461.
- ↑ Mills, William James (2003). Exploring Polar Frontiers: M-Z. ABC-CLIO. p. 389. ISBN 978-1-57607-422-0.
- ↑ Antarctic. New Zealand Antarctic Society (Incorporated). 1983. pp. 29, 58, 72.
- ↑ Haendel, Dietmar; Hermichen, Wolf-Dieter; Höfling, Reiner; Kowski, Peter (2011-12-01). "Hydrology of the lakes in Central Wohlthat Massif, East Antarctica: new results". Isotopes in Environmental and Health Studies. 47 (4): 402–406. doi:10.1080/10256016.2011.630464. ISSN 1025-6016. PMID 22166150. S2CID 36613201.
- ↑ Delmonte, B.; Petit, J. R.; Andersen, K. K.; Basile-Doelsch, I.; Maggi, V.; Ya Lipenkov, V. (2004). "Dust size evidence for opposite regional atmospheric circulation changes over east Antarctica during the last climatic transition". Climate Dynamics. 23 (3–4): 427–438. Bibcode:2004ClDy...23..427D. doi:10.1007/s00382-004-0450-9. ISSN 0930-7575. S2CID 129840718.
- 1 2 Lüdecke, Cornelia (2021). "Separate and United Paths: German Antarctic Research from the End of World War II Until Today". Germans in the Antarctic. Cham: Springer. pp. 193–234. doi:10.1007/978-3-030-40924-1_4. ISBN 978-3-030-40924-1. OCLC 1240211786. S2CID 234243175.
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