|
Syrtis Hill
Syrtis Hill () is a prominent snow-free conical terraced hill, rising to about 500 m, on the northwest corner of the Two Step Cliffs massif overlooking Viking Valley, in the southeast portion of Alexander Island, Antarctica. The hill is an important snow-free landmark and the site of biological and geological research. Named by United Kingdom Antarctic Place-Names Committee in 1993 after Syrtis Major Planum, the prominent dark feature on the planet Mars, first described by the Dutch astronomer Huygens in 1659. This hill was most likely named in association with nearby Mars Glacier and Planet Heights Planet Heights () is a series of summits running along an ice-free ridge, extending 24 nautical miles (44 km) in a north-south direction between the southernmost extremity of the LeMay Range and George VI Sound in the east part of Alexander .... See also * Mariner Hill Hills of Palmer Land Landforms of Alexander Island {{AlexanderIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two Step Cliffs
Two Step Cliffs () is the eastern face of a flat-topped sedimentary mountain, rising to about 680 m, immediately east of Mars Glacier on the east coast of Alexander Island, Antarctica. At the bottom of the cliffs is the Two Step Moraine. First seen from the air by Lincoln Ellsworth on November 23, 1935, and mapped from photos obtained on that flight by W.L.G. Joerg. Roughly surveyed from the ground in 1936 by the British Graham Land Expedition and in 1940-41 by the United States Antarctic Service, who used the names "Two Step Mountains" and "Table Mountain" for this feature. The name Two Step Cliffs derives from the name used by USAS, and was suggested by Falkland Islands Dependencies Survey The British Antarctic Survey (BAS) is the United Kingdom's national polar research institute. It has a dual purpose, to conduct polar science, enabling better understanding of global issues, and to provide an active presence in the Antarctic o ... following surveys in 1949 as being pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viking Valley
Viking Valley () is a valley lying on the east side of Mars Glacier containing a braided stream which feeds into Secret Lake, situated in the southeast corner of Alexander Island, Antarctica. This area was the prime research site of the 1992-93 Mars Glacier field party led by D. D. Wynn-Williams. The feature was named by the United Kingdom Antarctic Place-Names Committee in 1993 in association with nearby Mars Glacier. The name "Viking" stems from the Viking Lander project of NASA which first searched for life on Mars in 1976. See also * Ablation Valley * Flatiron Valley * Moutonnée Valley Moutonnée Valley is a valley in the Ganymede Heights area on the east coast of Alexander Island, Antarctica. The valley runs eastward towards Moutonnée Lake and George VI Sound. It was named in association with the lake by the United Kingdom Ant ... Valleys of Antarctica Valleys of Alexander Island {{AlexanderIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Island
Alexander Island, which is also known as Alexander I Island, Alexander I Land, Alexander Land, Alexander I Archipelago, and Zemlja Alexandra I, is the largest island of Antarctica. It lies in the Bellingshausen Sea west of Palmer Land, Antarctic Peninsula from which it is separated by Marguerite Bay and George VI Sound. The George VI Ice Shelf entirely fills George VI Sound and connects Alexander Island to Palmer Land. The island partly surrounds Wilkins Sound, which lies to its west.Stewart, J. (2011) ''Antarctic An Encyclopedia'' McFarland & Company Inc, New York. 1776 pp. . Alexander Island is about long in a north–south direction, wide in the north, and wide in the south. Alexander Island is the second-largest uninhabited island in the world, after Devon Island. History Alexander Island was discovered on January 28, 1821, by a Russian expedition under Fabian Gottlieb von Bellingshausen, who named it Alexander I Land for the reigning Tsar Alexander I of Russia. Wha ... [...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] |
United Kingdom Antarctic Place-Names Committee
The UK Antarctic Place-Names Committee (or UK-APC) is a United Kingdom government committee, part of the Foreign and Commonwealth Office, responsible for recommending names of geographical locations within the British Antarctic Territory (BAT) and the South Georgia and the South Sandwich Islands (SGSSI). Such names are formally approved by the Commissioners of the BAT and SGSSI respectively, and published in the BAT Gazetteer and the SGSSI Gazetteer maintained by the Committee. The BAT names are also published in the international Composite Gazetteer of Antarctica maintained by SCAR. The Committee may also consider proposals for new place names for geographical features in areas of Antarctica outside BAT and SGSSI, which are referred to other Antarctic place-naming authorities, or decided by the Committee itself if situated in the unclaimed sector of Antarctica. Names attributed by the committee * Anvil Crag, named for descriptive features * Anckorn Nunataks, named after J. F. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syrtis Major Planum
Syrtis Major Planum is a "dark spot" (an albedo feature) located in the boundary between the northern lowlands and southern highlands of Mars just west of the impact basin Isidis in the Syrtis Major quadrangle. It was discovered, on the basis of data from Mars Global Surveyor, to be a low-relief shield volcano, but was formerly believed to be a plain, and was then known as Syrtis Major Planitia. The dark color comes from the basaltic volcanic rock of the region and the relative lack of dust. A selected landing site for the Mars 2020 rover mission is Jezero crater (at ) within the region. The northeastern region of Syrtis Major Planum was also considered a potential landing site. Geography and geology Syrtis Major is centered near at , extends some north from the planet's equator, and spans from west to east. It is in the Syrtis Major quadrangle. It encompasses a large slope from its western edge at Aeria dropping to its eastern edge at Isidis Planitia. It includes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury (planet), Mercury. In the English language, Mars is named for the Mars (mythology), Roman god of war. Mars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes and polar ice caps. It has two small and irregularly shaped moons, Phobos (moon), Phobos and Deimos (moon), Deimos. Some of the most notable surface features on Mars include Olympus Mons, the largest volcano and List of tallest mountains in the Solar System, highest known mountain in the Solar System and Valles Marineris, one of the largest canyons in the Solar System. The North Polar Basin (Mars), Borealis basin in the Northern Hemisphere covers approximately 40% of the planet and may be a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars Glacier
Mars Glacier is a glacier in the southeastern corner of Alexander Island, Antarctica, long and wide, flowing south into the George VI Ice Shelf. The glacier lies between Two Step Cliffs and Phobos Ridge. Mars Glacier was first sighted from the air by Lincoln Ellsworth on November 23, 1935, and roughly mapped from photos obtained on that flight by W.L.G. Joerg. It was first surveyed in 1949 by the Falkland Islands Dependencies Survey and named by the UK Antarctic Place-Names Committee for the planet Mars, the fourth planet from the sun in the Solar System. Although Mars Glacier is not located within the Planet Heights mountain range, it lies nearby, and its name derives from it, along with many other nearby glaciers and landmarks located here which are named after planets, satellites and astrophysicists. See also * Mercury Glacier Mercury Glacier () is a glacier on the east coast of Alexander Island, Antarctica, long and wide, flowing east into George VI Sound between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planet Heights
Planet Heights () is a series of summits running along an ice-free ridge, extending 24 nautical miles (44 km) in a north-south direction between the southernmost extremity of the LeMay Range and George VI Sound in the east part of Alexander Island, Antarctica. Many landforms and nearby features are named in association with this mountain range; some of these include landforms named after astronomers, satellites, planets and other things related to astrology and astrophysics. The mountain range was first mapped from air photos taken by the Ronne Antarctic Research Expedition (RARE), 1947–48, by Searle of the Falkland Islands Dependencies Survey (FIDS) in 1960. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) from association with the nearby glaciers named for planets of the Solar System. The only planet that is not featured in any of these glaciers is the planet Earth, as there are no glaciers named "Earth Glacier" and this glacier does not exist. Glacie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mariner Hill
Mariner Hill () is a prominent snow-free conical hill, rising to about midway between Syrtis Hill and Two Step Cliffs, situated in the southeastern portion of Alexander Island, Antarctica. It was named by the UK Antarctic Place-Names Committee in 1993 after Mariner 9 Mariner 9 (Mariner Mars '71 / Mariner-I) was a robotic spacecraft that contributed greatly to the exploration of Mars and was part of the NASA Mariner program. Mariner 9 was launched toward Mars on May 30, 1971 from LC-36B at Cape Canaveral Air ..., the NASA probe which was the first spacecraft to orbit the planet Mars, in 1971. References Hills of Palmer Land Landforms of Alexander Island {{AlexanderIsland-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hills Of Palmer Land
A hill is a landform that extends above the surrounding terrain. It often has a distinct summit. Terminology The distinction between a hill and a mountain is unclear and largely subjective, but a hill is universally considered to be not as tall, or as steep as a mountain. Geographers historically regarded mountains as hills greater than above sea level, which formed the basis of the plot of the 1995 film ''The Englishman who Went up a Hill but Came down a Mountain''. In contrast, hillwalkers have tended to regard mountains as peaks above sea level. The ''Oxford English Dictionary'' also suggests a limit of and Whittow states "Some authorities regard eminences above as mountains, those below being referred to as hills." Today, a mountain is usually defined in the UK and Ireland as any summit at least high, while the official UK government's definition of a mountain is a summit of or higher. Some definitions include a topographical prominence requirement, typically o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Mars")
