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Fram Mesa
Nilsen Plateau () is a rugged, ice-covered plateau in Antarctica. When including Fram Mesa, the plateau is about long and wide, rising to high between the upper reaches of the Amundsen and Scott glaciers, in the Queen Maud Mountains. Discovered in November 1911 by the Norwegian expedition under Roald Amundsen, and named by him for Captain Thorvald Nilsen, commander of the ship '' Fram''. Location The Nilsen Plateau lies to the east of the upper Amundsen Glacier and north of the Rawson Mountains. The Bartlett Glacier forms on its southeast side. The Faulkner Escarpment defines its east side. The Hays Mountains are to the north, separated from the plateau by the Cappellari Glacier. Features just to the south of these two glaciers include Mount Dort, Mount Clough and Simmonds Peak. South of these are Gregory Ridge, Mount Bowser. The Nilsen Plateau proper includes Beck Peak, Mount Stubberud, Mount Sundbeck, Moraine Canyon and Fram Mesa. Further south again are Olsen Crags ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra-prominent Peak
An ultra-prominent peak, or ultra for short, is a mountain summit with a topographic prominence of or more; it is also called a P1500. The prominence of a peak is the minimum height of climb to the summit on any route from a higher peak, or from sea level if there is no higher peak. There are approximately 1,500 such peaks on Earth. Some well-known peaks, such as the Matterhorn and Eiger, are not ultras because they are connected to higher mountains by high cols and thus do not achieve enough topographic prominence. The term "ultra" originated with earth scientist Steve Fry, from his studies of the prominence of peaks in Washington in the 1980s. His original term was "ultra major mountain", referring to peaks with at least of prominence. Distribution Currently, over 1,500 ultras have been identified above sea level: 654 in Asia, 357 in North America, 209 in South America, 119 in Europe (including 12 in the Caucasus), 84 in Africa, 54 in Oceania, and 39 in Antarctica. Man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackwall Glacier
The Amundsen Glacier () is a major Antarctica, Antarctic glacier, about 7 to 11 km (4 to 6 nmi) wide and 150 km (80 nmi) long. It originates on the Antarctic Plateau where it drains the area to the south and west of Nilsen Plateau, then descends through the Queen Maud Mountains to enter the Ross Ice Shelf just west of the MacDonald Nunataks. Name The Amundsen Glacier was discovered by Richard E. Byrd on the South Pole flight in November 1929. The name was proposed for Roald Amundsen by Laurence Gould, leader of the Byrd Antarctic Expedition (Byrd AE) geological party which sledged past the mouth of the glacier in December 1929. Location According to ''Sailing Directions for Antarctica'' (1960), "Lying eastward of the Bowman Glacier is the Amundsen Glacier, the northern portal of which is in 85°30' S., 159°00' W. It is about 6 miles wide and trends southward about 60 miles to the polar plateau. Mount Helmer Hanssen, about 10,742 feet high, is a rounded dome, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plateaus Of Antarctica
In geology and physical geography, a plateau (; ; : plateaus or plateaux), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wider ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, plate tectonics movements, and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. They may be formed by upwelling of volcanic magma or extrusion of lava. The underlining mechanism in forming plateaus from up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holdsworth Glacier
The Scott Glacier () is a major glacier, long, that drains the East Antarctic Ice Sheet through the Queen Maud Mountains to the Ross Ice Shelf. The Scott Glacier is one of a series of major glaciers flowing across the Transantarctic Mountains, with the Amundsen Glacier to the west and the Leverett and Reedy glaciers to the east. Geography The Scott Glacier originates on the Antarctic Plateau in the vicinity of D'Angelo Bluff and Mount Howe, and descends between the Nilsen Plateau and the mountains of the Watson Escarpment to enter Ross Ice Shelf just west of the Tapley Mountains. The Tapley Mountains, Watson Escarpment, Mount Blackburn, and the La Gorce Mountains bound the Scott Glacier on its eastern margin, while the Karo Hills, Hays Mountains, Faulkner Escarpment, and Rawson Mountains define the western edge of the Scott's drainage. According to ''Sailing Directions for Antarctica'' (1960),"Eastward of the Amundsen Glacier the foothills are more nearly submerge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Przywitowski
The Rawson Mountains () lie within the Queen Maud Mountains to the southeast of the Ross Ice Shelf in Antarctica. They are a crescent-shaped range of tabular, ice-covered mountains including Fuller Dome, Mount Wyatt and Mount Verlautz, standing southeast of Nilsen Plateau and extending southeast for to the west side of Scott Glacier. Discovery and naming The Rawson Mountains were discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn. They were named by Richard E. Byrd for Frederick H. Rawson, American banker and contributor to the Byrd Antarctic Expeditions of 1928-30 and 1933-35. Location The Rawson Mountains are to the southeast of Nilsen Plateau and south of the head of the Holdsworth Glacier. The Scott Glacier forms to their east and flows north towards the Ross Ice Shelf. The Amundsen Glacier forms to their west and flows northwest towards the Ross Ice Shelf. Features of the Rawson Mountains, from west to east, include Full ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advisory Committee On Antarctic Names
The Advisory Committee on Antarctic Names (ACAN or US-ACAN) is an advisory committee of the United States Board on Geographic Names responsible for recommending commemorative names for features in Antarctica. History The committee was established in 1943 as the Special Committee on Antarctic Names (SCAN). It became the Advisory Committee on Antarctic Names in 1947. Fred G. Alberts was Secretary of the Committee from 1949 to 1980. By 1959, a structured nomenclature was reached, allowing for further exploration, structured mapping of the region and a unique naming system. A 1990 ACAN gazeeter of Antarctica listed 16,000 names. Description The United States does not recognise territorial boundaries within Antarctica, so ACAN assigns names to features anywhere within the continent, in consultation with other national nomenclature bodies where appropriate, as defined by the Antarctic Treaty System. The research and staff support for the ACAN is provided by the United States Geologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes. The sole scientific agency of the U.S. Department of the Interior, USGS is a fact-finding research organization with no regulatory responsibility. It is headquartered in Reston, Virginia, with major offices near Lakewood, Colorado; at the Denver Federal Center; and in NASA Research Park in California. In 2009, it employed about 8,670 people. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on its hundredth anniversary, was "Earth Science in the Public S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epler Glacier
The Amundsen Glacier () is a major Antarctic glacier, about 7 to 11 km (4 to 6 nmi) wide and 150 km (80 nmi) long. It originates on the Antarctic Plateau where it drains the area to the south and west of Nilsen Plateau, then descends through the Queen Maud Mountains to enter the Ross Ice Shelf just west of the MacDonald Nunataks. Name The Amundsen Glacier was discovered by Richard E. Byrd on the South Pole flight in November 1929. The name was proposed for Roald Amundsen by Laurence Gould, leader of the Byrd Antarctic Expedition (Byrd AE) geological party which sledged past the mouth of the glacier in December 1929. Location According to ''Sailing Directions for Antarctica'' (1960), "Lying eastward of the Bowman Glacier is the Amundsen Glacier, the northern portal of which is in 85°30' S., 159°00' W. It is about 6 miles wide and trends southward about 60 miles to the polar plateau. Mount Helmer Hanssen, about 10,742 feet high, is a rounded dome, completel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cappellari Glacier
The Amundsen Glacier () is a major Antarctica, Antarctic glacier, about 7 to 11 km (4 to 6 nmi) wide and 150 km (80 nmi) long. It originates on the Antarctic Plateau where it drains the area to the south and west of Nilsen Plateau, then descends through the Queen Maud Mountains to enter the Ross Ice Shelf just west of the MacDonald Nunataks. Name The Amundsen Glacier was discovered by Richard E. Byrd on the South Pole flight in November 1929. The name was proposed for Roald Amundsen by Laurence Gould, leader of the Byrd Antarctic Expedition (Byrd AE) geological party which sledged past the mouth of the glacier in December 1929. Location According to ''Sailing Directions for Antarctica'' (1960), "Lying eastward of the Bowman Glacier is the Amundsen Glacier, the northern portal of which is in 85°30' S., 159°00' W. It is about 6 miles wide and trends southward about 60 miles to the polar plateau. Mount Helmer Hanssen, about 10,742 feet high, is a rounded dome, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Dependency
The Ross Dependency is a region of Antarctica defined by a circular sector, sector originating at the South Pole, passing along longitudes 160th meridian east, 160° east to 150th meridian west, 150° west, and terminating at latitude 60th parallel south, 60° south. It is claimed by New Zealand, a claim mutually accepted only by Australia, the United Kingdom, UK, France and Norway, which are countries that also have territorial claims in Antarctica. Under the 1961 Antarctic Treaty System, Antarctic Treaty, of which all territorial claimants are signatories, including New Zealand, all claims are held in abeyance. Article IV states: "No acts or activities taking place while the present Treaty is in force shall constitute a basis for asserting, supporting or denying a claim to territorial sovereignty in Antarctica or create any rights of sovereignty in Antarctica". The Dependency takes its name from James Clark Ross, Sir James Clark Ross, who discovered the Ross Sea and includes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
