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Mount Irvine (Antarctica)
Roa Ridge () is a bow-shaped ridge, long in the Asgard Range of Victoria Land, Antarctica. For much of its extent, it separates Matterhorn Glacier and Lacroix Glacier. Named by New Zealand Geographic Board (NZGB) in 1998. ''Roa'' is a Maori word meaning “long” ridge. Features From northwest to southeast, summits on the ridge include Vogler Peak, Mount Irvine, Hoehn Peak, Webb Peak and Matterhorn. Markham Spur A prominent rock spur extending southwest from Roa Ridge into Matterhorn Glacier in Asgard Range, Victoria Land. Named by New Zealand Geographic Board (NZGB) (1998) after Geoffrey W. Markham, Secretary of the New Zealand National Committee for the IGY, 1957–58; first Superintendent of Antarctic Division, New Zealand DSIR, 1959-65. Morelli Ridge . A ridge, long, that extends north from Hoehn Peak into the upper part of Bartley Glacier. Named by the United States Advisory Committee on Antarctic Names The Advisory Committee on Antarctic Names (ACAN or US-ACA ... [...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 (also known as the Antarctic 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 Climate of Antarctica#Precipitation, 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 temperature recorded on Earth, lowest measured temperature on Earth, . The coastal regions can reach temperatures over in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria Land
Victoria Land is a region in eastern Antarctica which fronts the western side of the Ross Sea and the Ross Ice Shelf, extending southward from about 70°30'S to 78th parallel south, 78°00'S, and westward from the Ross Sea to the edge of the Antarctic Plateau. It was discovered by Captain James Clark Ross in January 1841 and named after Victoria of the United Kingdom, Queen Victoria. The rocky promontory of Minna Bluff is often regarded as the southernmost point of Victoria Land, and separates the Scott Coast to the north from the Hillary Coast of the Ross Dependency to the south. History Early explorers of Victoria Land include James Clark Ross and Douglas Mawson. In 1979, scientists discovered a group of 309 Meteorite, meteorites in Antarctica, some of which were found near the Allan Hills in Victoria Land. The meteorites appeared to have undergone little change since they were formed at what scientists believe was the birth of the Solar System. In 1981, Lichen, lichens fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridge
A ridge is a long, narrow, elevated geomorphologic landform, structural feature, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the crest or ridgecrest, with the terrain dropping down on either side. The crest, if narrow, is also called a ridgeline. Limitations on the dimensions of a ridge are lacking. Its height above the surrounding terrain can vary from less than a meter to hundreds of meters. A ridge can be either depositional, erosional, tectonic, or a combination of these in origin and can consist of either bedrock, loose sediment, lava, or ice depending on its origin. A ridge can occur as either an isolated, independent feature or part of a larger geomorphological and/or structural feature. Frequently, a ridge can be further subdivided into smaller geomorphic or structural elements. Classification As in the case of landforms in general, there is a lack of any commonly agreed clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asgard Range
The Asgard Range () is a mountain range in Victoria Land, Antarctica. It divides Wright Valley from Taylor Glacier and Taylor Valley. It is south of the Olympus Range and north of the Quartermain Mountains and the Kukri Hills. Name The Asgard Range was named by the Victoria University of Wellington Antarctic Expedition (1958–59) after Asgard, the home of the Norse gods. Location The Asgard Range extends in a west–east direction from Wright Upper Glacier, below the Antarctic Plateau, to Mount Newall above the Wilson Piedmont Glacier, which extends along the west coast of the Ross Sea. To the north, the Asgard Range is separated from the Olympus Range by the Wright Upper Glacier and the Wright Valley, from which the Wright Lower Glacier flows into the Wilson Piedmont Glacier. To the south, the Taylor Glacier and Taylor Valley separate the Asgard Range from the Quartermain Mountains and the Kukri Hills. Surrounding major glaciers and valleys * Wright Upper Glacie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matterhorn Glacier
The Matterhorn Glacier (German: ''Matterhorngletscher'') is a glacier of the Pennine Alps, located at the base of the north face of the Matterhorn (4478m above the sea), south of Zermatt. It has a maximum width of approximately 2.5 km and reaches a minimum height of 2,800 metres. The glacier lies within the basin of the Zmutt Glacier. In 1865, following the first ascent of the Matterhorn, four climbers died in a fall on the way down from the summit. Three of the dead were retrieved several days later on the Matterhorn Glacier, but the remains of Lord Francis Douglas were never found. References *Swisstopo Swisstopo is the official name for the Swiss Federal Office of Topography, Switzerland's national mapping agency. The current name was made official in 2002. It had been used as the domain name for the homepage of the instituteswisstopo.admi ... topographic maps ;Notes Glaciers of the Alps Matterhorn Glaciers of Valais {{valais-glacier-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lacroix Glacier
Taylor Valley is an ice-free valley about long, once occupied by the receding Taylor Glacier. It lies north of the Kukri Hills between the Taylor Glacier and New Harbour in Victoria Land, Antarctica. Taylor Valley is the southernmost of the three large McMurdo Dry Valleys in the Transantarctic Mountains, located west of McMurdo Sound. Exploration and naming The Taylor Valley was discovered by the British National Antarctic Expedition (BrNAE, 1901–04). It was more fully explored by the British Antarctic Expedition, 1907–09 (BrAE) and the British Antarctic Expedition, 1910–13. It was named after the Taylor Glacier. Geology In the oblique aerial photo at right, the tan bands are sandstone layers from the Beacon Supergroup, a series of sedimentary rock layers formed at the bottom of a shallow sea between 250 million and 400 million years ago. Throughout that period, Earth's southern continents were locked into the supercontinent Gondwana. The dark band of rock that divide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bartley Glacier
The Wright Valley () is a large east–west trending valley, formerly occupied by a glacier but now ice free except for Wright Upper Glacier at its head and Wright Lower Glacier at its mouth, in Victoria Land, Antarctica. It was named by the VUWAE (1958-59) for Sir Charles Wright, for whom the BrAE (1910-13) named the glacier at the mouth of this valley. The Wright Valley is the central one of the three large McMurdo Dry Valleys in the Transantarctic Mountains, located west of McMurdo Sound. Wright Valley contains the Onyx River, the longest river in Antarctica, Lake Brownworth, the origin of the Onyx River, and Lake Vanda, which is fed by the Onyx River. Its southwestern branch, ''South Fork'', is the location of Don Juan Pond. The upland area known as the Labyrinth is at the valley's west end. Exploration Although portions of the interconnected valley system were discovered in 1903 by the ''Discovery'' expedition led by Captain Robert Falcon Scott, the Wright Valley lo ... [...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] |
Morelli Ridge
Roa Ridge () is a bow-shaped ridge, long in the Asgard Range of Victoria Land, Antarctica. For much of its extent, it separates Matterhorn Glacier and Lacroix Glacier. Named by New Zealand Geographic Board (NZGB) in 1998. ''Roa'' is a Maori word meaning “long” ridge. Features From northwest to southeast, summits on the ridge include Vogler Peak, Mount Irvine, Hoehn Peak, Webb Peak and Matterhorn. Markham Spur A prominent rock spur extending southwest from Roa Ridge into Matterhorn Glacier in Asgard Range, Victoria Land. Named by New Zealand Geographic Board (NZGB) (1998) after Geoffrey W. Markham, Secretary of the New Zealand National Committee for the IGY, 1957–58; first Superintendent of Antarctic Division, New Zealand DSIR, 1959-65. Morelli Ridge . A ridge, long, that extends north from Hoehn Peak into the upper part of Bartley Glacier. Named by the United States Advisory Committee on Antarctic Names (US-ACAN) (1997) after Frank A. Morelli, Bioscience and Plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridges Of Victoria Land
A ridge is a long, narrow, elevated geomorphologic landform, structural feature, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the crest or ridgecrest, with the terrain dropping down on either side. The crest, if narrow, is also called a ridgeline. Limitations on the dimensions of a ridge are lacking. Its height above the surrounding terrain can vary from less than a meter to hundreds of meters. A ridge can be either depositional, erosional, tectonic, or a combination of these in origin and can consist of either bedrock, loose sediment, lava, or ice depending on its origin. A ridge can occur as either an isolated, independent feature or part of a larger geomorphological and/or structural feature. Frequently, a ridge can be further subdivided into smaller geomorphic or structural elements. Classification As in the case of landforms in general, there is a lack of any commonly agreed classi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
