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McClure Strait
The M'Clure Strait (sometimes rendered McClure Strait) is a strait on the edge of the Canadian Northwest Territories. It forms the northwestern end of the Parry Channel which extends east all the way to Baffin Bay and is thus a possible route for the Northwest Passage. The strait was named for Robert McClure, an Irish Arctic explorer serving in the Royal Navy. He was the first man to traverse the North-West Passage (by boat and sledge). The strait connects the Beaufort Sea in the west with Viscount Melville Sound in the east. It is bounded by Prince Patrick Island, Eglinton Island and Melville Island on the north and Banks Island on the south. As the strait is chronically blocked with thick ice, it is usually impassable to ships; in 1969, the United States-registered tanker SS ''Manhattan'' was freed from the ice by a Canadian icebreaker, and forced to travel through Canadian territorial waters to complete its westward passage. Ice prevented ''Manhattan'' from going through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Map Indicating McClure Strait, Northwest Territories, Canada
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes. Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although most commonly used to depict geography, maps may represent any space, real or fictional, without regard to context or scale, such as in brain mapping, DNA mapping, or computer network topology mapping. The space being mapped may be two dimensional, such as the surface of the earth, three dimensional, such as the interior of the earth, or even more abstract spaces of any dimension, such as arise in modeling phenomena having many independent variables. Although the earliest maps known are of the heavens, geographic maps of territory have a very long tradition and exist from ancient times. The word "map" comes from the , wherein ''mappa'' meant 'napkin' or 'cloth' and ''mundi'' 'the world'. Thus, "map" became a shortened term referring to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SS Manhattan (1962)
SS ''Manhattan'' was an oil tanker constructed at the Fore River Shipyard in Quincy, Massachusetts, that became the first commercial ship to cross the Northwest Passage in 1969. Having been built as an ordinary tanker in 1962, she was refitted for ice navigation during this voyage with an icebreaker bow in 1968–69. Registered in the United States at the time, she was the largest US merchant vessel. If we consider ice navigation vessels as icebreakers, then ''Manhattan'' was the biggest icebreaker in history before the construction of the Yamalmax class ships. In 1965, she was taken to Portland, Oregon via the Columbia River, to be cleaned and used to transport 50,000 tons of grain. The size and draught of the ship required careful preparations for her transit on the river. ''Manhattan'' remained in service until 1987. After an accident in East Asia she was scrapped in China. 1969 Northwest Passage transit ''Manhattan''s route began in August 1969 on the east coast of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territorial Claims In The Arctic
The Arctic consists of land, internal waters, territorial seas, exclusive economic zones (EEZs) and international waters above the Arctic Circle (66 degrees 33 minutes North latitude). All land, internal waters, territorial seas and EEZs in the Arctic are under the jurisdiction of one of the eight Arctic coastal states: Canada, Denmark (via Greenland), Finland, Iceland, Norway, Russia, Sweden and the United States. International law regulates this area as with other portions of Earth. Under international law, the North Pole and the region of the Arctic Ocean surrounding it are not owned by any country. The five surrounding Arctic countries are limited to a territorial sea of and an exclusive economic zone (EEZ) of adjacent to their coasts measured from declared baselines filed with the UN. The waters beyond the territorial seas of the coastal states are considered the "high seas" (i.e. international waters). The waters and sea bottom that is not confirmed to be extended conti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Tusculanum Press
Museum Tusculanum Press (Danish: ''Museum Tusculanums Forlag'') is an independent academic press historically associated with the University of Copenhagen, publishing mainly in the humanities, social sciences and theology. It was founded in 1975 as a non-profit institution and publishes approximately 45 titles annually. A large part of the books published by Museum Tusculanum Press are authored or edited by researchers affiliated with the University of Copenhagen The University of Copenhagen ( da, Københavns Universitet, KU) is a prestigious public university, public research university in Copenhagen, Copenhagen, Denmark. Founded in 1479, the University of Copenhagen is the second-oldest university in .... External linksOfficial website University of Copenhagen Book publishing companies of Denmark Publishing companies established in 1975 University presses of Denmark Mass media in Copenhagen Danish companies established in 1975 {{publish-corp-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceanic Crust
Oceanic crust is the uppermost layer of the oceanic portion of the tectonic plates. It is composed of the upper oceanic crust, with pillow lavas and a dike complex, and the lower oceanic crust, composed of troctolite, gabbro and ultramafic cumulates. The crust overlies the rigid uppermost layer of the mantle. The crust and the rigid upper mantle layer together constitute oceanic lithosphere. Oceanic crust is primarily composed of mafic rocks, or sima, which is rich in iron and magnesium. It is thinner than continental crust, or sial, generally less than 10 kilometers thick; however, it is denser, having a mean density of about 3.0 grams per cubic centimeter as opposed to continental crust which has a density of about 2.7 grams per cubic centimeter. The crust uppermost is the result of the cooling of magma derived from mantle material below the plate. The magma is injected into the spreading center, which consists mainly of a partly solidified crystal mush derived from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extensional Tectonics
Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or lithosphere. Deformation styles The types of structure and the geometries formed depend on the amount of stretching involved. Stretching is generally measured using the parameter ''β'', known as the ''beta factor'', where : \beta = \frac \,, ''t''0 is the initial crustal thickness and ''t''1 is the final crustal thickness. It is also the equivalent of the strain parameter ''stretch''. Low beta factor In areas of relatively low crustal stretching, the dominant structures are high to moderate angle normal faults, with associated half grabens and tilted fault blocks. High beta factor In areas of high crustal stretching, individual extensional faults may become rotated to too low a dip to remain active and a new set of faults may be generated. Large displacements may juxtapose syntectonic sediments against metamorphic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rift
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remain above sea level they form a rift valley, which may be filled by water forming a rift lake. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all, active rift systems. Major rifts occur along the central axis of most mid-ocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates. ''Failed rifts'' are the result of continental rifting that failed to continue to the point of break-up. Typically the transition from rifting to spreading develops at a triple junction where three converging rifts meet over a hotspot. Two of these evolve to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hallberg-Rassy
Hallberg-Rassy Varvsaktiebolag (HR) is a Swedish shipyard internationally known for producing high quality blue water sailing yachts. The company's yard is located in Ellös on the island of Orust, Västra Götaland. History Harry Hallberg founded his yard in 1943, and in 1965 Christoph Rassy founded a yard, in premises recently vacated by Hallberg. Harry Hallberg’s most distinguished contribution was his understanding of the advantages of using GRP and to build boats in a series. Hallberg-Rassy was formed when Rassy purchased the Hallberg yard after Harry Halberg's retirement in 1972. Since 1989 all boats have been designed by the Argentinian engineer and yacht designer Germán Frers. To date, more than 9,400 yachts have been completed by the yard. The company is owned by the Rassy family, and is managed by Magnus Rassy. Models Hallberg-Rassy Owners Associations A number of associations for current and potential owners of Hallberg-Rassy yachts are active worldwide. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Scott Cowper
David Scott Cowper is a British yachtsman, and was the first man to sail solo round the world in both directions and was also the first to successfully sail around the world via the Northwest Passage single-handed. Biography Born in 1942, David Cowper was educated at Stowe School and lives and works in Newcastle upon Tyne. Although he is a Chartered Building Surveyor and a Fellow of the Royal Institution of Chartered Surveyors, sailing was his passion from an early age. In 1974, Cowper participated and successfully completed The Observer Around Britain Race in his Wanderer-class sailboat, ''Airedale'', L.O.A. 29' 6", designed by John Laurent Giles. In 1976, he successfully completed The Observer Single-Handed Trans-Atlantic Race, again in his boat ''Airedale''. In 1980, Cowper completed the fastest solo circumnavigation of the globe via Cape Horn, Cape of Good Hope and Cape Leeuwin in ''Ocean Bound'', a W. Huisman 41 ft sloop designed by Sparkman & Stephens, beating Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic
The Arctic ( or ) is a polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenland), Finland, Iceland, Norway, Russia ( Murmansk, Siberia, Nenets Okrug, Novaya Zemlya), Sweden and the United States (Alaska). Land within the Arctic region has seasonally varying snow and ice cover, with predominantly treeless permafrost (permanently frozen underground ice) containing tundra. Arctic seas contain seasonal sea ice in many places. The Arctic region is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme conditions. Life in the Arctic includes zooplankton and phytoplankton, fish and marine mammals, birds, land animals, plants and human societies. Arctic land is bordered by the subarctic. Definition and etymology The word Arctic comes from the Greek word ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Space Agency
, owners = , headquarters = Paris, Île-de-France, France , coordinates = , spaceport = Guiana Space Centre , seal = File:ESA emblem seal.png , seal_size = 130px , image = Views in the Main Control Room (12052189474).jpg , size = , caption = , acronym = , established = , employees = 2,200 , administrator = Director General Josef Aschbacher , budget = €7.2 billion (2022) , language = English and French (working languages) , website = , logo = European Space Agency logo.svg , logo_caption = Logo , image_caption = European Space Operations Centre (ESOC) Main Control Room The European Space Agency (ESA; french: Agence spatiale européenne , it, Agenzia Spaziale Europea, es, Agencia Espacial Europea ASE; german: Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states dedicated to the exploration of space. Established in 1975 and headquartere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Arctic Archipelago
The Arctic Archipelago, also known as the Canadian Arctic Archipelago, is an archipelago lying to the north of the Canadian continental mainland, excluding Greenland (an autonomous territory of Denmark). Situated in the northern extremity of North America and covering about , this group of 36,563 islands, surrounded by the Arctic Ocean, comprises much of Northern Canada, predominately Nunavut and the Northwest Territories. The archipelago is showing some effects of climate change, with some computer estimates determining that melting there will contribute to the rise in sea levels by 2100. History Around 2500 BCE, the first humans, the Paleo-Eskimos, arrived in the archipelago from the Canadian mainland. Between 1000–1500 CE, they were replaced by the Thule people, who are the ancestors of today's Inuit. British claims on the islands, the British Arctic Territories, were based on the explorations in the 1570s by Martin Frobisher. Canadian sovereignty was originally ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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