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Sovetskaya (lake)
Sovetskaya Lake is a liquid subglacial lake found buried under the Antarctic ice sheet, below Sovetskaya (Antarctic Research Station), Sovetskaya Research Station. It covers about . See also * Lake Vostok (the largest subglacial lake in Antarctica) * 90 Degrees East * Sovetskaya (Antarctic Research Station) References Subglacial lakes Lakes of Kaiser Wilhelm II Land {{KaiserWilhelmIILand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subglacial Lake
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. Since the first discoveries of subglacial lakes under the Antarctic Ice Sheet, more than 400 subglacial lakes have been discovered in Antarctica, beneath the Greenland Ice Sheet, and under Iceland's Vatnajökull ice cap. Subglacial lakes contain a substantial proportion of Earth's liquid freshwater, with the volume of Antarctic subglacial lakes alone estimated to be about 10,000 km3, or about 15% of all liquid freshwater on Earth. As ecosystems is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
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 . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the lowest measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic
The Antarctic ( or , American English also or ; commonly ) is a polar region around Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica, the Kerguelen Plateau and other island territories located on the Antarctic Plate or south of the Antarctic Convergence. The Antarctic region includes the ice shelves, waters, and all the island territories in the Southern Ocean situated south of the Antarctic Convergence, a zone approximately wide varying in latitude seasonally. The region covers some 20 percent of the Southern Hemisphere, of which 5.5 percent (14 million km2) is the surface area of the Antarctica continent itself. All of the land and ice shelves south of 60°S latitude are administered under the Antarctic Treaty System. Biogeographically, the Antarctic realm is one of eight biogeographic realms of Earth's land surface. Geography As defined by the Antarctic Treaty System, the Antarctic r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sovetskaya (Antarctic Research Station)
Sovetskaya was a Soviet research station in Kaiser Wilhelm II Land in Antarctica that was established on 16 February 1958 and closed on 3 January 1959. The surface elevation was initially reported to be ; however, it was later revised to . Reached on 16 February 1958 by the 3rd Soviet Antarctic Expedition for International Geophysical Year research work, it closed on 3 January 1959. Its WMO reporting ID was 89557. See also *Sovetskaya (lake) * List of Antarctic research stations * List of Antarctic field camps Many Antarctic research stations support satellite field camps which are, in general, seasonal camps. The type of field camp can vary – some are permanent structures used during the annual Antarctic summer, whereas others are little more than te ... Sources Outposts of Antarctica Polar exploration by Russia and the Soviet Union Outposts of Kaiser Wilhelm II Land Soviet Union and the Antarctic 1959 disestablishments in the Soviet Union 1959 disestablish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Vostok
Lake Vostok (russian: озеро Восток, ''ozero Vostok'') is the largest of Antarctica's almost 400 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 above mean sea level. The surface of this fresh water lake is approximately under the surface of the ice, which places it at approximately below sea level. Measuring long by wide at its widest point, it covers an area of making it the 16th largest lake by surface area. With an average depth of , it has an estimated volume of , making it the 6th largest lake by volume. The lake is divided into two deep basins by a ridge. The liquid water depth over the ridge is about , compared to roughly deep in the northern basin and deep in the southern. The lake is named after Vostok Station, which in turn is named after the ''Vostok'' (Восток), a sloop-of-war, which means "East" in Russian. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
90 Degrees East
90 Degrees East, also known as 90°E Lake, is a lake in Antarctica. With a surface area of about , it is the second-largest known subglacial lake in Antarctica, after Lake Vostok. 90 Degrees East was discovered in January 2006, along with Sovetskaya.Robin Bell and Michael Studinger, Geophysical researchers from Columbia University, published in ''Geophysical Research Letters'' It is named after the 90th meridian east, on which it lies. See also *Lake Vostok *Sovetskaya (lake) Sovetskaya Lake is a liquid subglacial lake found buried under the Antarctic ice sheet, below Sovetskaya (Antarctic Research Station), Sovetskaya Research Station. It covers about . See also * Lake Vostok (the largest subglacial lake in Antarctic ... References Lakes of Kaiser Wilhelm II Land {{KaiserWilhelmIILand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subglacial Lakes
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. Since the first discoveries of subglacial lakes under the Antarctic Ice Sheet, more than 400 subglacial lakes have been discovered in Antarctica, beneath the Greenland Ice Sheet, and under Iceland's Vatnajökull ice cap. Subglacial lakes contain a substantial proportion of Earth's liquid freshwater, with the volume of Antarctic subglacial lakes alone estimated to be about 10,000 km3, or about 15% of all liquid freshwater on Earth. As ecosystems isolat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
