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Pingo
Pingos are intrapermafrost ice-cored hills, high and in diameter. They are typically conical in shape and grow and persist only in permafrost environments, such as the Arctic and subarctic. A pingo is a Periglaciation, periglacial landform, which is defined as a non-glacial landform or process linked to colder climates. It is estimated that there are more than 11,000 pingos on Earth, with the Tuktoyaktuk peninsula area having the greatest concentration at a total of 1,350. History In 1825, John Franklin made the earliest description of a pingo when he climbed a small pingo on Ellice Island in the Mackenzie River, Mackenzie Delta. However, it was in 1938 that the term ''pingo'' was first borrowed from the Inuvialuit by the Arctic botanist Erling Porsild, Alf Erling Porsild in his paper on Earth mounds of the western Arctic coast of Canada and Alaska. Porsild Pingo in Tuktoyaktuk is named in his honour. The term pingo, which in Inuvialuktun means conical hill, has now been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuktoyaktuk
Tuktoyaktuk ( ; , ) is an Inuvialuit hamlet near the Mackenzie River delta in the Inuvik Region of the Northwest Territories, Canada, at the northern terminus of the Inuvik–Tuktoyaktuk Highway.Montgomery, Marc"Canada now officially connected by road-coast to coast to coast" ''CBC Radio'', 15 November 2017. Retrieved on 15 November 2017. One of six Inuvialuit communities in the Inuvialuit Settlement Region, it is commonly known by its first syllable, ''Tuk'' (). It lies north of the Arctic Circle on the Arctic Ocean, and is the only place on the Arctic Ocean connected to the rest of Canada by road. Known as Port Brabant after British colonization, in 1950 it became Canada's first Indigenous settlement to reclaim its traditional name. History Tuktoyaktuk is the Anglicisation, anglicized form of the native Inuvialuit place-name, meaning "resembling a Reindeer, caribou". According to legend, a woman looked on as some caribou, common at the site, waded into the water and tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permafrost
Permafrost () is soil or underwater sediment which continuously remains below for two years or more; the oldest permafrost has been continuously frozen for around 700,000 years. Whilst the shallowest permafrost has a vertical extent of below a meter (3 ft), the deepest is greater than . Similarly, the area of individual permafrost zones may be limited to narrow mountain summits or extend across vast Arctic regions. The ground beneath glaciers and ice sheets is not usually defined as permafrost, so on land, permafrost is generally located beneath a so-called active layer of soil which freezes and thaws depending on the season. Around 15% of the Northern Hemisphere or 11% of the global surface is underlain by permafrost, covering a total area of around . This includes large areas of Alaska, Canada, Greenland, and Siberia. It is also located in high mountain regions, with the Tibetan Plateau being a prominent example. Only a minority of permafrost exists in the Southern Hemi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erling Porsild
Alf Erling Porsild (1901–1977) was a Danish-Canadian botanist. Biography He was born in Copenhagen as a son of the botanist M.P. Porsild. He grew up on the Arctic Station in Qeqertarsuaq, West Greenland, where he acted as assistant to his father. Between 1936 and 1945, he was curator at the National Museum of Canada, Ottawa, and from 1945 to 1967 he was head of the department of botany there. He authored over 100 scientific articles on the flora of the Canadian Arctic Archipelago and of the Rocky Mountains, as well as numerous popular papers and books, including important flora of Canada's Arctic and northern regions. He made over 25,000 plant collections (numbers), resulting in over 100,000 specimens which are deposited in the National Herbarium of Canada (CAN) at the Canadian Museum of Nature, Ottawa, and in other herbaria around the world. Porsild was hired to take part in the Canadian Reindeer Project to bring reindeer-herding to the indigenous populations of northern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periglaciation
Periglaciation (adjective: "periglacial", referring to places at the edges of glacial areas) describes geomorphic processes that result from seasonal thawing and freezing, very often in areas of permafrost. The meltwater may refreeze in ice wedges and other structures. "Periglacial" originally suggested an environment located on the margin of past glaciers. However, freeze and thaw cycles influence landscapes also outside areas of past glaciation. Therefore, periglacial environments are anywhere when freezing and thawing modify the landscape in a significant manner. History Periglaciation became a distinct subject within the study of geology after Walery Łoziński, a Polish geologist, introduced the term in 1909. Łoziński drew upon the early work of Johan Gunnar Andersson. According to Alfred Jahn, his introduction of his work at the 1910 International Geological Congress held in Stockholm caused significant discussion. In the field trip to Svalbard that followed the congres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenland
Greenland is an autonomous territory in the Danish Realm, Kingdom of Denmark. It is by far the largest geographically of three constituent parts of the kingdom; the other two are metropolitan Denmark and the Faroe Islands. Citizens of Greenland are full Danish nationality law, citizens of Denmark and European Union citizenship, of the European Union. Greenland is one of the Special territories of members of the European Economic Area#Overseas countries and territories, Overseas Countries and Territories of the European Union and is part of the Council of Europe. It is the List of islands by area, world's largest island, and lies between the Arctic Ocean, Arctic and Atlantic oceans, east of the Arctic Archipelago, Canadian Arctic Archipelago. It is the location of the northernmost point of land in the world; Kaffeklubben Island off the northern coast is the world's Northernmost point of land, northernmost undisputed point of land—Cape Morris Jesup on the mainland was thought to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disko Bay
Disko Bay (; Christensen, N.O. & al.Elections in Greenland". ''Arctic Circular'', Vol. 4 (1951), pp. 83–85. Op. cit. "Northern News". ''Arctic'', Vol. 5, No. 1 (Mar 1952), pp. 58–59.) is a large bay on the western coast of Greenland. The bay constitutes a wide southeastern inlet of Baffin Bay. Geography To the south the coastline is complicated with multiple waterways of skerries and small islands in the Aasiaat archipelago. Qasigiannguit and Ilimanaq are the main settlements in the southeastern inlet, just south of the outflow of Ilulissat Icefjord. From the north the bay is bounded by Qeqertarsuaq (Disko Island), the largest island on the western coast. North of Ilulissat and west of Alluttoq Island the bay transforms into Sullorsuaq Strait separating Qeqertarsuaq from Nuussuaq Peninsula.Nuussuaq, Saga Map, Tage Schjøtt, 1992 It is the largest open bay in western Greenland, measuring north to south and east to west. It has an average depth of and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuussuaq Peninsula
Nuussuaq Peninsula (, old spelling: ''Nûgssuaq'') is a large () peninsula in western Greenland. Geography The waters around the peninsula are that of Baffin Bay. To the south and southwest the peninsula is bounded by Disko Bay, an inlet of Baffin Bay. It is separated from Qeqertarsuaq Island by Sullorsuaq Strait, known in Danish as Vaigat Strait, which connects Disko Bay with Baffin Bay. To the northeast, it is bounded by the Uummannaq Fjord system. The peninsula is mountainous, with the highest summit reaching .Nuussuaq, Saga Map, Tage Schjøtt, 1992 The spinal range splits in two to the northwest of the base of the peninsula, with the southern arm forming the coastal range, the central arm almost entirely glaciated, and continuing northwest the entire length of the peninsula. The two arms are dissected by a deep Kuussuaq Valley, partially filled in the center with Sarqap Tassersuaq, a glacial, emerald lake. Settlements The peninsula is administered as part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mestersvig
Mestersvig, also called Mesters Vig, is a military outpost located in Scoresby Land, on the southwestern shore of Davy Sound in King Christian X Land, NE Greenland. It has a 1,800 m gravel airstrip . This airport is located near the Stauning Alps mountainous area. History From 1956 to 1963, Mestersvig was a zinc and lead mine. Later Mestersvig used to be the only permanent station in the Northeast Greenland National Park; however, all of the 1986 population of 40 has been split up into the three newer Northeast Greenland National Park research stations (Danmarkshavn, Nord and Daneborg) except a permanent population of two people, although tourists visit the station occasionally. In September 2015, as part of the newest defence agreement to increase the enforcement of sovereignty in Greenland, Mission Mestersvig was executed. The mission was to test the responsiveness of the military of Denmark and if the equipment could handle winter weather. HDMS ''Thetis'', parts of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mackenzie Delta Ice-Wedge Tuktoyaktuk Pingo
Mackenzie, Mckenzie, MacKenzie, or McKenzie may refer to: People * Mackenzie (given name), a given name (including a list of people with the name) * Mackenzie (surname), a surname (including a list of people with the name) * Clan Mackenzie, a Scottish clan Places Cities, towns and roads Australia * Mackenzie, Queensland, a suburb of Brisbane * Mackenzie, Queensland (Central Highlands), a locality in the Central Highlands Region * Lake McKenzie, a perched lake in Queensland Canada * Mackenzie (provincial electoral district), a former constituency in British Columbia * Mackenzie, British Columbia, near Williston Lake in east central British Columbia * Mackenzie, Ontario, on Thunder Bay in west central Ontario * Mackenzie Mountains, a mountain range in northern Canada * District of Mackenzie, a former administrative district of Canada's Northwest Territories ''Alberta'' * Mackenzie County, a specialized municipality in northwestern Alberta * Mackenzie Highway, in Alber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
