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Steensby Glacier
Steensby Glacier ( da, Steensby Gletscher) is a major glacier in northern Greenland. This glacier was first mapped in 1917 during Knud Rasmussen's 1916–1918 Second Thule Expedition to north Greenland and was named after Danish ethnologist Hans Peder Steensby. Geography The Steensby Glacier originates in the Greenland Ice Sheet. It is roughly north–south oriented and has its terminus between Nyeboe Land and Warming Land at the head of the Saint George Fjord. The fjord is free from ice in the summer, and the glacier forms a floating tongue within the fjord that has shrunk since it was measured in 1963.U.S. Geological Survey Professional Paper, Volume 1386, Part 3, figure 37 BibliographyAnthony K. Higgins, ''North Greenland Glacier Velocities and Calf Ice Production''h1> See also *List of glaciers in Greenland This is a list of glaciers in Greenland. Details on the size and flow of some of the major Greenlandic glaciers are listed by Eric Rignot and Pannir Kanagaratnam (20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petermann Glacier
Petermann Glacier ( da, Petermann Gletsjer) is a large glacier located in North-West Greenland to the east of Nares Strait. It connects the Greenland ice sheet to the Arctic Ocean at 81°10' north latitude, near Hans Island. The glacier and its fjord are named after German cartographer August Heinrich Petermann. Geography The tidewater glacier consists of a long and wide floating ice tongue whose thickness changes from about at its grounding line to about at its front. Rough mass balance estimates using these scales suggest that about 80% of its mass is lost as basal meltwater, yet little oceanographic data are available to connect Petermann Glacier to its fjord and adjacent Nares Strait. Even the sill depth and location is largely unknown as modern soundings of the fjord, with its mouth located between Cape Morton and Cape Tyson, are still lacking. Petermann Glacier marks the western limit of Hall Land and the eastern of Daugaard-Jensen Land. The Petermann Peninsula flanks i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knud Rasmussen
Knud Johan Victor Rasmussen (; 7 June 1879 – 21 December 1933) was a Greenlandic–Danish polar explorer and anthropologist. He has been called the "father of Eskimology" (now often known as Inuit Studies or Greenlandic and Arctic Studies) and was the first European to cross the Northwest Passage via dog sled. He remains well known in Greenland, Denmark and among Canadian Inuit.Elizabeth Cruwys, 2003. Early years Rasmussen was born in Jakobshavn, Greenland, the son of a Danish missionary, the vicar Christian Rasmussen, and an Inuit–Danish mother, Lovise Rasmussen (née Fleischer). He had two siblings. Rasmussen spent his early years in Greenland among the Kalaallit where he learned to speak Kalaallisut, hunt, drive dog sleds and live in harsh Arctic conditions. "My playmates were native Greenlanders; from the earliest boyhood I played and worked with the hunters, so even the hardships of the most strenuous sledge-trips became pleasant routine for me." He was later ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Navigation Chart A-5, 3rd Edition
An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." For example, an operational definition of "fear" (the construct) often includes measurable physiologic responses that occur in response to a perceived threat. Thus, "fear" might be operationally defined as specified changes in heart rate, galvanic skin response, pupil dilation, and blood pressure. Overview An operational definition is designed to model or represent a concept or theoretical definition, also known as a construct. Scientists should describe the operations (procedures, actions, or processes) that define the concept with enough specificity such that other investigators can replicate their research. Operational definitions are also used to define system states in terms of a specific, publicly accessible process of preparation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warming Land
Warming Land is a peninsula in far northern Greenland. Administratively it is a part of the Northeast Greenland National Park. It was named after Danish botanist and ecologist Eugen Warming (1841 – 1924). Geography Warming Land is located between Nyeboe Land and Wulff Land. It is bounded by St George Fjord and the Steensby Glacier on its western side, and Hartz Sound —a branch of the Sherard Osborn Fjord, as well as the Ryder Glacier on the eastern. Midgårdsormen, an unglaciated section of the peninsula, is located at the southern end and to the south of it lies the Greenland Ice Sheet. Warming Land has two large firn caps in its central part, the Daniel Bruun Firn and the Rink Firn covering the highest parts of the peninsula.GoogleEarth See also *Firn __NOTOC__ Firn (; from Swiss German "last year's", cognate with ''before'') is partially compacted névé, a type of snow that has been left over from past seasons and has been recrystallized into a substance d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nyeboe Land
Nyeboe Land ( da, Nyeboes Land) is a peninsula in far northwestern Greenland. It is a part of the Northeast Greenland National Park. History Nyeboe Land was named after engineer Marius Nyeboe (1867–1946), chairman of the committee of Knud Rasmussen's Fifth Thule Expedition. Geography Nyeboe Land is located to the northeast of Hall Land in the west, and southwest of Hendrik Island and west of Warming Land and the Steensby Glacier in the east. It is bounded to the north by the Lincoln Sea and to the east by Saint George Fjord. Newman Fjord (Newman Bay) marks the western limit of Nyeboe Land. To the south and southeast the peninsula is attached to the mainland and its ice cap. The Dreyer Firn is located in the southwest, near the Saint George Fjord's shore. There are three small bays in the northern shore, Repulse Harbour, Hand Bay and Frankfield Bay, from west to east. Nyeboe Land is largely unglaciated and mountainous.GoogleEarth high Punch Mountain, the highest eleva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland Ice Sheet
The Greenland ice sheet ( da, Grønlands indlandsis, kl, Sermersuaq) is a vast body of ice covering , roughly near 80% of the surface of Greenland. It is sometimes referred to as an ice cap, or under the term ''inland ice'', or its Danish equivalent, ''indlandsis''. An acronym, GIS, is frequently used in the scientific literature. It is the second largest ice body in the world, after the Antarctic ice sheet. The ice sheet is almost long in a north–south direction, and its greatest width is at a latitude of 77°N, near its northern margin. The average thickness is about and over at its thickest point. In addition to the large ice sheet, smaller ice caps (such as Maniitsoq and Flade Isblink) as well as glaciers, cover between around the periphery. The Greenland ice sheet is adversely affected by climate change. It is more vulnerable to climate change than the Antarctic ice sheet because of its position in the Arctic, where it is subject to the regional amplification o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Peder Steensby
Hans Peder Steensby (25 March 1875, Steensby, Skamby Sogn, Funen Island – 20 October 1920, aboard ship Frederik VIII) was an ethnographer, geographer and professor at the University of Copenhagen.H. P. Steensby: Racestudier i Danmark' (PDF; 1,22 MB). In: ''Geografisk Tidsskrift''. Vol 19, 1907, pp. 135–145 Career Steensby was born into a family of farmers. His original name was Hans Peder Jensen, but in 1902 he changed his name to Steensby, the name of the parish where he was born. After completing his education in 1900 he moved to Copenhagen and became a teacher. In 1908 he travelled to Algeria and Tunisia, where he studied the culture of the nomads. In 1909 he lived among the Greenlandic Inuit of the Cape York area. In 1911 he became professor of Geography at the Copenhagen University. In 1913 he made a research trip to Egypt and the Anglo-Egyptian Sudan Anglo-Egyptian Sudan ( ar, السودان الإنجليزي المصري ') was a condominium of the United Ki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Thule Expedition
The second (symbol: s) is the unit of time in the International System of Units (SI), historically defined as of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of Units ( SI) is more precise:The second ..is defined by taking the fixed numerical value of the caesium frequency, Δ''ν''Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s−1. This current definition was adopted in 1967 when it became feasible to define the second based on fundamental properties of nature with caesium clocks. Because the speed of Earth's rotation varies and is slowing ever so slightly, a leap second is added at irregular intervals to civil time to keep clocks in sync with Earth's rotation. Uses Analog clocks and watches often have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartography
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can be modeled in ways that communicate spatial information effectively. The fundamental objectives of traditional cartography are to: * Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as toponyms or political boundaries. * Represent the terrain of the mapped object on flat media. This is the concern of map projections. * Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of generalization. * Reduce the complexity of the characteristics that will be mapped. This is also the concern of generalization. * Orchestrate the elements of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryder Glacier (Greenland)
Ryder Glacier ( da, Ryder Gletscher), is one of the major glaciers in northern Greenland. This glacier was first mapped by Lauge Koch in 1917 during Knud Rasmussen's 1916-1918 Second Thule Expedition to north Greenland and was named after Danish Arctic explorer Carl Ryder. Geography The Ryder Glacier originates in the Greenland Ice Cap. It is roughly north–south oriented and has its terminus at the head of the Sherard Osborn Fjord between Permin Land and Warming Land. It is 30 km long and is a floating tongue within the fjord. BibliographyAnthony K. Higgins, ''North Greenland Glacier Velocities and Calf Ice Production''h1> See also *List of glaciers in Greenland This is a list of glaciers in Greenland. Details on the size and flow of some of the major Greenlandic glaciers are listed by Eric Rignot and Pannir Kanagaratnam (2006) Ice sheets and caps *Greenland Ice Sheet * Christian Erichsen Ice Cap *Flad ... References External linksA Mini-Surge on the Ryder Glacier ... [...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#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, 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 lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln Sea
Lincoln Sea (french: Mer de Lincoln; da, Lincolnhavet) is a body of water in the Arctic Ocean, stretching from Cape Columbia, Canada, in the west to Cape Morris Jesup, Greenland, in the east. The northern limit is defined as the great circle line between those two headlands. It is covered with sea ice throughout the year, the thickest sea ice in the Arctic Ocean, which can be up to thick. Water depths range from to . Water and ice from Lincoln Sea empty into Robeson Channel, the northernmost part of Nares Strait, most of the time. The sea was named after Robert Todd Lincoln, then United States Secretary of War, on Adolphus W. Greely's 1881–1884 Arctic expedition into Lady Franklin Bay. Alert, the northernmost station of Canada, is the only populated place on the shore of Lincoln Sea. The body of water to the east of Lincoln Sea (east of Cape Morris Jesup) is the Wandel Sea. Currents and Oceanic Circulation Because of the severe ice conditions that last year-round, oceanog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
