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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] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tidal Outlet Glacier
Glacier morphology, or the form a glacier takes, is influenced by temperature, precipitation, topography, and other factors. The goal of glacial morphology is to gain a better understanding of glaciated landscapes and the way they are shaped. Types of glaciers can range from massive ice sheets, such as the Greenland ice sheet, to small cirque glaciers found perched on mountain tops. Glaciers can be grouped into two main categories: * Ice flow is constrained by the underlying bedrock topography * Ice flow is unrestricted by surrounding topography Unconstrained Glaciers Ice sheets and ice caps Ice sheets and ice caps cover the largest areas of land in comparison to other glaciers, and their ice is unconstrained by the underlying topography. They are the largest glacial ice formations and hold the vast majority of the world's fresh water. Ice sheets Ice sheets are the largest form of glacial formation. They are continent sized ice masses that span areas over . They are dome s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland
Greenland ( kl, Kalaallit Nunaat, ; da, Grønland, ) is an island country in North America that is part of the Kingdom of Denmark. It is located between the Arctic and Atlantic oceans, east of the Canadian Arctic Archipelago. Greenland is the world's largest island. It is one of three constituent countries that form the Kingdom of Denmark, along with Denmark and the Faroe Islands; the citizens of these countries are all citizens of Denmark and the European Union. Greenland's capital is Nuuk. Though a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers) for more than a millennium, beginning in 986.The Fate of Greenland's Vikings , by Dale Mackenzie Brown, ''Archaeological Institute of America'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sherard Osborn Fjord
Sherard Osborn Fjord is a fjord in northern Greenland. To the NNW, the fjord opens into the Lincoln Sea. Administratively it is part of the Northeast Greenland National Park. This fjord was named after Royal Navy admiral and Arctic explorer Sherard Osborn (1822 – 1875). Geography It is a fjord with a wide mouth that opens to the NNW between Dragon Point at the northern end of Hendrik Island, and Cape May, at the northwestern end of Wulff Land. Hendrik Island forms the western shore of the fjord north of the Hartz Sound and smaller high Castle Island lies in Saint Andrew Bay off the northeastern shore of Hendrik Island. Sherard Osborn Fjord forms Wulff Land's western coastline and Hendrik Island forms part of the northern half of the facing shore, while the shore south of the Hartz Sound that separates the island from the mainland is part of Warming Land on one side and Permin Land on the other. The Hartz Sound connects the area of the head of the fjord with neighboring ... [...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] |
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] |
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] |
Lauge Koch
Lauge Koch (5 July 1892 – 5 June 1964) was a Danish geologist and Arctic explorer. Biography Lauge Koch was born in 1892 to Karl and Elisabeth Koch. His development as a scientist was greatly influenced by his father's second cousin Johan Peter Koch - a polar explorer, a member of several Greenland expeditions, including Ludvig Mylius-Erichsen's and Alfred Wegener's (in the latter's expedition (1912-1913) to cross Greenland, he led a sledging party). He received his higher education at the University of Copenhagen, where he began his studies in 1911, in 1920 he received a master's degree, and in 1929 a doctor's degree, having defended a dissertation on the topic "Stratigraphy of Greenland". General He was the renowned leader of 24 Danish government expeditions to Greenland, and the central character in the ''Lauge Koch Controversy'', an international and intra-national conflict. Beginning in December 1935 a bitter conflict arose between Koch and eleven of the most prominent Da ... [...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] |
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] |
Carl Ryder
200px, Schooner '' Fylla'' in Copenhagen harbour Carl Hartvig Ryder (12 September 1858 – 3 May 1923) was a Danish naval officer and Arctic explorer. Biography Carl Ryder was born in Copenhagen. He was the son of Frederik Valentiner Ryder (1821-1909) and his wife Henriette Sophie Cathrine Husmann (1836-1896). He entered a military career in the Royal Danish Navy becoming a Second Lieutenant in 1879 and Captain 1897. He led an expedition to the Upernavik Distrikt in 1886-1887 and, most famously, the 1891-1892 expedition to East Greenland by the vessel ''Hekla''. The way north from Ittoqqortoormiit was effectively blocked by ice. Instead, Ryder made the first comprehensive mapping of the entire Scoresby Sund fjord system, except for the inner part of Nordvestfjord. He was a member of several other expeditions: *The meteorological expedition 1882–83 to Nuuk led by Adam Paulsen *The naturalist expedition to West Greenland with Eugenius Warming and Theo Holm in 1884 on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland Ice Cap
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 of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
