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Alley Glacier
The Alley Glacier () is a glacier in Antarctica that drains the north slopes of Britannia Range in the vicinity of Ward Tower and flows north to Darwin Glacier. It is separated from Gaussiran Glacier by a series of large rock buttresses, including Robertson Buttress. It was named by the Advisory Committee on Antarctic Names after Richard Alley of the Department of Geosciences, Pennsylvania State University, a United States Antarctic Program glaciologist who specialized in the study of ice streams of the West Antarctic Ice Sheet. See also * List of glaciers in the Antarctic * Glaciology Glaciology (; ) is the scientific study of glaciers, or more generally ice and natural phenomena that involve ice. Glaciology is an interdisciplinary Earth science that integrates geophysics, geology, physical geography, geomorphology, c ... References * Glaciers of Oates Land {{OatesLand-glacier-stub ... [...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 ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Ice Shelf
The Ross Ice Shelf is the largest ice shelf of Antarctica (, an area of roughly and about across: about the size of France). It is several hundred metres thick. The nearly vertical ice front to the open sea is more than long, and between high above the water surface. Ninety percent of the floating ice, however, is below the water surface. Most of Ross Ice Shelf is in the Ross Dependency claimed by New Zealand. It floats in, and covers, a large southern portion of the Ross Sea and the entire Roosevelt Island located in the east of the Ross Sea. The ice shelf is named after Sir James Clark Ross, who discovered it on 28 January 1841. It was originally called "The Barrier", with various adjectives including "Great Ice Barrier", as it prevented sailing further south. Ross mapped the ice front eastward to 160° W. In 1947, the U.S. Board on Geographic Names applied the name "Ross Shelf Ice" to this feature and published it in the original U.S. Antarctic Gazetteer. In Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darwin Glacier (Antarctica)
Darwin Glacier () is a large glacier in Antarctica. It flows from the polar plateau eastward between the Darwin Mountains and the Cook Mountains to the Ross Ice Shelf. The lower part of the glacier was mapped by the British National Antarctic Expedition, 1901–04, and the whole area traversed by New Zealand parties of the Commonwealth Trans-Antarctic Expedition (1956–58). The glacier was named in association with the Darwin Mountains (themselves named after Leonard Darwin). Robertson Buttress is the westernmost in a series of large rock buttresses on the south side of Darwin Glacier between Alley Glacier and Gaussiran Glacier. See also * Erewhon Basin * List of glaciers in the Antarctic * Glaciology * The Nozzle The Nozzle is a comparatively narrow constriction through which the lower Darwin Glacier flows, causing the ice to bank up somewhat in the vicinity of Diamond Hill. The descriptive name was given by the Darwin Glacier Party of the Commonwealth Tran ... * Walker Cir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between latitudes 35°N and 35°S, glaciers occur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Britannia Range (Antarctica)
The Britannia Range is an Antarctic mountain range bounded by the Hatherton and Darwin glaciers on the north and the Byrd Glacier on the south, westward of the Ross Ice Shelf. Discovered by the British National Antarctic Expedition (1901–04) under Scott. Named after HMS ''Britannia'', a vessel utilized as a naval college in England, which had been attended by several officers of Scott's expedition. Features * Abus Valley * Adams Crest * Banna Peak * Beale Peak * Bellum Valley * Benson Bluff * Berry Bastion * Borowski Peak * Brier Icefalls * Casatelli Peak * Cohn Bluff * Danum Platform * Darnell Nunatak * Dartmouth Peak * DeGalan Peak * Doll Peak * Dubris Valley * Dusky Ledge * Dusky Ridge * Forbes Ridge * Hourihan Glacier * Hughes Basin * Icenhower Ridge * Jacobs Peak * Johnson Spire * Johnstone Ridge * Krissek Peak * Lemanis Valley * Lucia Peak * Magnis Ridge * Marty Nunataks * Menster Ledge * Metaris Valley * Moore Pinnacle * Mount Aldrich * Mount Askin * Mount Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ward Tower
Ward Tower () is a prominent mountain, , located 3 nautical miles (6 km) east-northeast of Mount Aldrich on the main ridge of Britannia Range. Named by Advisory Committee on Antarctic Names (US-ACAN) after Commander Edward M. Ward, U.S. Navy, commanding officer of U.S. Navy Squadron VX-6 during Operation Deep Freeze Operation Deep Freeze (OpDFrz or ODF) is codename for a series of United States missions to Antarctica, beginning with "Operation Deep Freeze I" in 1955–56, followed by "Operation Deep Freeze II", "Operation Deep Freeze III", and so on. (There w ... I and II, 1955–56 and 1956–57. Mountains of Oates Land Britannia Range (Antarctica) {{OatesLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaussiran Glacier
Gaussiran Glacier is a glacier in the eastern part of the Britannia Range, Antarctica. It drains north from the saddle with Merrick Glacier to a juncture with Darwin Glacier between the Cranfield Icefalls and the Nebraska Peaks. It is separated from Alley Glacier by a series of large rock buttresses, including Robertson Buttress. It was named by the Advisory Committee on Antarctic Names after Lieutenant C.D. Gaussiran, U.S. Navy, a pilot with the VXE-6 detachment at Darwin Glacier Field Camp, 1978–79. See also * List of glaciers in the Antarctic * Glaciology Glaciology (; ) is the scientific study of glaciers, or more generally ice and natural phenomena that involve ice. Glaciology is an interdisciplinary Earth science that integrates geophysics, geology, physical geography, geomorphology, c ... References Glaciers of Oates Land {{OatesLand-glacier-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robertson Buttress
Robertson Buttress () is the westernmost (1040 m) in a series of large rock buttresses on the south side of Darwin Glacier between Alley Glacier and Gaussiran Glacier. It was named by the Advisory Committee on Antarctic Names (US-ACAN) after William Gray Robertson, Jr. of ASA, a specialist in the design and installation of communication systems for United States Antarctic Program (USAP) in the McMurdo Sound and McMurdo Dry Valleys The McMurdo Dry Valleys are a row of largely snow-free valleys in Antarctica, located within Victoria Land west of McMurdo Sound. The Dry Valleys experience extremely low humidity and surrounding mountains prevent the flow of ice from nearby ... areas from 1990 to 2000. Rock formations of Oates Land {{OatesLand-geo-stub ... [...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 Geolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Alley
Richard Blane Alley (born 18 August 1957) is an American geologist and Evan Pugh Professor of Geosciences at Pennsylvania State University. He has authored more than 240 refereed scientific publications about the relationships between Earth's cryosphere and global climate change, and is recognized by the Institute for Scientific Information as a "highly cited researcher." Education Alley was educated at Ohio State University and University of Wisconsin–Madison, where he was awarded a PhD in 1987. Research and career In 1999, Alley was invited to testify about climate change by Vice President Al Gore, in 2003 by the U.S. Senate Committee on Commerce, Science, and Transportation, and before the U.S. House Committee on Science and Technology in 2007 and again in 2010. Alley's 2007 testimony was due to his role as a lead author of "Chapter 4: Observations: Changes in Snow, Ice and Frozen Ground" for the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IP ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennsylvania State University
The Pennsylvania State University (Penn State or PSU) is a public state-related land-grant research university with campuses and facilities throughout Pennsylvania. Founded in 1855 as the Farmers' High School of Pennsylvania, Penn State became the state's only land-grant university in 1863. Today, Penn State is a major research university which conducts teaching, research, and public service. Its instructional mission includes undergraduate, graduate, professional and continuing education offered through resident instruction and online delivery. The University Park campus has been labeled one of the " Public Ivies", a publicly funded university considered as providing a quality of education comparable to those of the Ivy League. In addition to its land-grant designation, it also participates in the sea-grant, space-grant, and sun-grant research consortia; it is one of only four such universities (along with Cornell University, Oregon State University, and University of Hawa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Antarctic Program
The United States Antarctic Program (or USAP; formerly known as the United States Antarctic Research Program or USARP and the United States Antarctic Service or USAS) is an organization of the United States government which has presence in the Antarctica continent. Founded in 1959, the USAP manages all U.S. scientific research and related logistics in Antarctica as well as aboard ships in the Southern Ocean. United States Antarctic Program The United States established the U.S. Antarctic Research Program (USARP) in 1959—the name was later changed to the U.S. Antarctic Program—immediately following the success of the International Geophysical Year (IGY). Today, the National Science Foundation (NSF) has a Presidential Mandate to manage the United States Antarctic Program, through which it operates three year-round research stations and two research vessels, coordinates all U.S. science on the southernmost continent, and works with other federal agencies, the U.S. military, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
