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Ice Rise
An ice rise is a clearly defined elevation of the otherwise very much flatter ice shelf, typically dome-shaped and rising several hundreds of metres above the surrounding ice shelf . An ice rise forms where the ice shelf touches the seabed due to a locally increased elevation of the seabed, which however remains below sea level. (In contrast, an elevation in the seabed that extends above sea level is defined as an island). The ice shelf flows over the seabed elevation, completely covering it with ice, thereby forming an ice rise. The resulting stress increases cause crevasse formation around the ice rise. An island within and totally covered by the ice shelf may appear the same as an ice rise. Elaborate measurements may be required to distinguish between these two geographic features. Although ice rises are typically located within the ice shelf area, they can partially face the open sea. At present, ice rises are found only within the ice shelves of Antarctica. The largest ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Shelf Ice Hg
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 regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Derwael Ice Rise
Derwael Ice Rise is 40 km long, 35 km wide and about 400 m tall ice rise in ice shelf off Princess Ragnhild Coast, 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 contine .... Situated 70 km east of Breid Bay in northern part of Roi Baudouin Ice Shelf, directly in front of Western Ragnhild Glacier. Named for geodesist of Belgian Antarctic expedition Jean-Jacques Derwael. Studies suggest that Derwael Ice Rise has remain relatively stable over the last millennia. References Ice rises of Antarctica Bodies of ice of Queen Maud Land Princess Ragnhild Coast {{QueenMaudLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davis Ice Rise
Davis Ice Rise () is an ice rise, long, near the terminus of Smith Glacier, southeast of Mayo Peak, Bear Peninsula, on the Walgreen Coast, Marie Byrd Land. It was mapped by the United States Geological Survey from U.S. Navy aerial photographs taken 1966 and from Landsat imagery taken 1972–73. It was named by the Advisory Committee on Antarctic Names after Commander Arthur R. Davis, U.S. Navy, Supply Officer, 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 ..., 1975–76 and 1976–77. References Ice rises of Antarctica Bodies of ice of Marie Byrd Land {{MarieByrdLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crosson Ice Shelf
Crosson Ice Shelf () is an Antarctic ice shelf, about wide, north and northeast of Mount Murphy along the Walgreen Coast of Marie Byrd Land. The ice shelf is nurtured by Smith, Pope, Vane, and Haynes Glaciers. It was mapped by the U.S. Geological Survey from surveys and from U.S. Navy air photos, 1959–66, and named by the Advisory Committee on Antarctic Names for Commander W.E. Crosson, U.S. Navy, Commanding Officer of the Antarctic Construction Group during Operation Deep Freeze 1973. See also * Ice shelves of Antarctica This is a list of Antarctic ice shelves. Ice shelves are attached to a large portion of the Antarctic coastline. Their total area is 1,541,700 km2. Names are also listed in the Scientific Committee on Antarctic Research, Gazetteer. The ... References {{MarieByrdLand-geo-stub Ice shelves of Antarctica Bodies of ice of Marie Byrd Land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roosevelt Island, Antarctica
Roosevelt Island is the second largest ice rise of Antarctica and world-wide, after Berkner Island. Despite its name, it is not an island, since the bedrock below the ice at its highest part is below sea level. It is about long in a NW-SE direction, wide and about in area, lying under the eastern part of the Ross Ice Shelf of Antarctica. Its central ridge rises to about above sea level, but this and all other elevations of the ice rise are completely covered by ice, so that it is invisible at ground level. Examination of how the ice flows above it establishes the existence and extent of the ice rise. Radar surveying carried out between 1995 and 2013 showed that the Raymond Effect was operating beneath the ice divide. The ice rise has become a focus of the Roosevelt Island Climate Evolution (RICE) research using ice coring. Rear Admiral Richard E. Byrd named it in 1934 after US President Franklin D. Roosevelt. Byrd was the leader of the expedition that discovered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crary Ice Rise
Crary Ice Rise is an Antarctic ice rise in the south-central part of the Ross Ice Shelf. At 82°56'S, it is the southernmost ice rise. The feature was investigated by the USARP Ross Ice Shelf Project in the 1970s. The name came into use among USARP workers and honors Albert P. Crary (1911–87), American geophysicist Geophysics () is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term ''geophysics'' som .... See also * Crary Bank References External links Pictures of Crary Ice Rise {{coord, 82, 56, S, 172, 30, W, scale:2000000, display=title Ice rises of Antarctica ... [...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 Januar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrisson Ice Rises
The Harrisson Ice Rises () are a local swelling of the ice surface west-southwest of Henderson Island, Antarctica, where the Shackleton Ice Shelf overrides an underlying obstruction. The feature was discovered by the Eastern Sledge Party of the Australasian Antarctic Expedition (1911–14) under Douglas Mawson Sir Douglas Mawson OBE FRS FAA (5 May 1882 – 14 October 1958) was an Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during ..., who named the feature for Charles T. Harrisson, biologist with the expedition. References Ice rises of Antarctica Bodies of ice of Queen Mary Land {{QueenMaryLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Ice Rises
The Green Ice Rises () are a local swelling of the Antarctic ice surface east of Henderson Island, where the Shackleton Ice Shelf overrides an underlying obstruction. The feature was mapped by G.D. Blodgett (1955) from aerial photography taken by U.S. Navy Operation Highjump (1946–47), and was named by the Advisory Committee on Antarctic Names for Duane L. Green, a radio operator and recorder with U.S. Navy Operation Windmill parties which established astronomical control stations along Wilhelm II Wilhelm II (Friedrich Wilhelm Viktor Albert; 27 January 18594 June 1941) was the last German Emperor (german: Kaiser) and King of Prussia, reigning from 15 June 1888 until his abdication on 9 November 1918. Despite strengthening the German Empir ..., Knox, and Budd coasts in January and February, 1948. References Ice rises of Antarctica Bodies of ice of Queen Mary Land {{QueenMaryLand-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shackleton Ice Shelf
Shackleton Ice Shelf is an extensive ice shelf fronting the coast of East Antarctica from 95° E to 105° E. It extends for an along-shore distance of about , projecting seaward about in the western portion and in the east. It occupies an area of . It is part of Mawson Sea and separates the Queen Mary Coast to the west from the Knox Coast of Wilkes Land to the east. Discovery and naming The existence of this ice shelf was first made known by the USEE under Charles Wilkes who mapped a portion of it from the ''Vincennes'' in February 1840. It was explored by the Australian Antarctic Expedition under Douglas Mawson (1911–14) who named it for Sir Ernest Shackleton. The extent of the ice shelf was mapped in greater detail in 1955, using aerial photography obtained by US Navy Operation Highjump, 1946–47. Further mapping by the Soviet Expedition of 1956 showed the portion eastward of Scott Glacier to be a part of this ice shelf. Important Bird Area A 500 ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Science
''Antarctic Science'' is a bimonthly peer reviewed scientific journal published by Cambridge University Press, focusing on all aspects of scientific research in the Antarctic. The editors-in-chief are David W. H. Walton (British Antarctic Survey), Walker O. Smith (Virginia Institute of Marine Sciences), Laurie Padman (Earth & Space Research), Alan Rodger (University of Aberystwyth), and John Smellie (University of Leicester). This journal is a continuation of the "British Antarctic Survey Bulletin" published from 1963 to 1988. Under this former title the journal was indexed in Biological abstracts, Chemical abstracts, and GeoRef.Library Catalog. "British Antarctic Survey Bulletin".Harvard University - Hollis Classic. 2014. This journal's name was changed to "Antarctic Science" in 1989. Abstracting and indexing This journal is indexed by the following services: * Science Citation Index * Current Contents/ Agriculture, Biology & Environmental Sciences * Current Contents/ Physical, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
