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Hornaday River
Hornaday River (variants: Big River, Homaday River, Hornaaa River; or Rivière La Roncière-le Noury) is a waterway located above the Arctic Circle on the mainland of Northern Canada. The upper reach of a river first discovered in 1868 was named Rivière La Roncière-le Noury in honour of Admiral Baron Adalbert Camille Marie Clément de La Roncière-Le Noury, commander of the Mediterranean Squadron, and president of the Société de Géographie. The lower reach of a river discovered in 1899 was named Hornaday after American zoologist William Temple Hornaday. Decades later, the Roncière and the Hornaday were ascertained to be the same river. Course The river originates () in the western Kitikmeot Region, Nunavut, south of Bluenose Lake (''Takipaq''). It initially flows west-southwest, passing into the Northwest Territories along the southern edge of the Melville Hills within the Settlement Region of the Inuvialuit, just south of the Tuktut Nogait National Park boundary. It the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bluenose Lake
Bluenose Lake is a lake in Kitikmeot Region, Nunavut, Canada. It is located north of the Arctic Circle within the large, shallow basin of the Melville Hills. It is approximately long, wide, and is situated at above sea level. The Croker River flows north from Bluenose Lake to the Arctic Ocean, entering at Dolphin and Union Strait. It was officially named in 1953 by John Kelsall and James Mitchell subsequent to their biological investigation of the previously unnamed lake. Fauna The area barren-ground caribou are divided, genetically, into two herds, Bluenose-east and Bluenose-west. Other mammals include Arctic fox, Arctic ground squirrel, Arctic hare, Back's lemming, barren-ground grizzly bear, collared lemming, muskox, short-tailed weasel, tundra vole, and wolf. Birds that frequent the area include Arctic loon, Arctic tern, Baird's sandpiper, black-bellied plover, buff-breasted sandpiper, Canada goose, glaucous gull, golden eagle, golden plover, herring gull, king eider, L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuktut Nogait National Park
Tuktut Nogait National Park () is a National Parks of Canada, national park located in the Northwest Territories of Canada that was established in 1998. Meaning "young Barren-ground caribou, caribou" in Inuvialuktun, the park is home to the calving grounds of the Bluenose-West caribou herd. It is also the home to other wildlife species which are muskoxen, grizzly bears, Arctic chars, red foxes, wolverines, Arctic ground squirrels, collared lemmings, and Arctic wolf, Arctic wolves. Tuktut Nogait is a major breeding and nesting ground for a wide variety of Bird migration, migratory birds. Bird of prey, Raptors such as peregrine falcons, rough-legged buzzard, rough-legged hawks, gyr falcons and golden eagles nest along the steep walls of river canyons. The Dolphin-Union Caribou herd which normally occupies Victoria Island (Canada), Victoria Island and winters in the Bathurst area of Nunavut, sometimes migrates as far as Tuktut Nogait National Park following the shoreline in search o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permafrost
Permafrost is ground that continuously remains below 0 °C (32 °F) for two or more years, located on land or under the ocean. Most common in the Northern Hemisphere, around 15% of the Northern Hemisphere or 11% of the global surface is underlain by permafrost, with the total area of around 18 million km2. This includes substantial areas of Alaska, Greenland, Canada and Siberia. It can also be located on mountaintops in the Southern Hemisphere and beneath ice-free areas in the Antarctic. Permafrost does not have to be the first layer that is on the ground. It can be from an inch to several miles deep under the Earth's surface. It frequently occurs in ground ice, but it can also be present in non-porous bedrock. Permafrost is formed from ice holding various types of soil, sand, and rock in combination. Permafrost contains large amounts of biomass and decomposed biomass that has been stored as methane and carbon dioxide, making tundra soil a carbon sink. As global war ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bedrock
In geology, bedrock is solid Rock (geology), rock that lies under loose material (regolith) within the crust (geology), crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bedrock is often called an outcrop. The various kinds of broken and weathered rock material, such as soil and subsoil, that may overlie the bedrock are known as regolith. Engineering geology The surface of the bedrock beneath the soil cover (regolith) is also known as ''rockhead'' in engineering geology, and its identification by digging, drilling or geophysics, geophysical methods is an important task in most civil engineering projects. Superficial deposition (geology), deposits can be very thick, such that the bedrock lies hundreds of meters below the surface. Weathering of bedrock Exposed bedrock experiences weathering, which may be physical or chemical, and which alters the structure of the rock to leave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Ocean
The Arctic Ocean is the smallest and shallowest of the world's five major oceans. It spans an area of approximately and is known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea. It has been described approximately as an estuary of the Atlantic Ocean. It is also seen as the northernmost part of the all-encompassing World Ocean. The Arctic Ocean includes the North Pole region in the middle of the Northern Hemisphere and extends south to about 60°N. The Arctic Ocean is surrounded by Eurasia and North America, and the borders follow topographic features: the Bering Strait on the Pacific side and the Greenland Scotland Ridge on the Atlantic side. It is mostly covered by sea ice throughout the year and almost completely in winter. The Arctic Ocean's surface temperature and salinity vary seasonally as the ice cover melts and freezes; its salinity is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Bear Lake
Great Bear Lake ( den, Sahtú; french: Grand lac de l'Ours) is a lake in the boreal forest of Canada. It is the largest lake entirely in Canada (Lake Superior and Lake Huron are larger but straddle the Canada–US border), the fourth-largest in North America, and the eighth-largest in the world. The lake is in the Northwest Territories, on the Arctic Circle between 65 and 67 degrees of northern latitude and between 118 and 123 degrees western longitude, above sea level. The name originated from the Chipewyan language word , meaning "grizzly bear water people". The Sahtu, a Dene people, are named after the lake. Grizzly Bear Mountain on the shore of the lake also comes from Chipewyan, meaning, "bear large hill".Johnson, LThe Great Bear Lake: Its Place in History Calgary, Alberta: ''Arctic Institute of North America'' (AINA) database at the University of Calgary. pp. 236-237. Retrieved on: 2012-01-30. The Sahoyue (Grizzly Bear Mountain) peninsula on the south side of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Mining
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit', and the above-ground structures are a 'pit head'. In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging and manually extracting the coal on carts to large open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks and shearers. The coal mining industry has a long history of significant negative environmental impacts on local ecosystems, health impacts on local communities and workers, and contributes heavily to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographical Names Board Of Canada
The Geographical Names Board of Canada (GNBC) is a national committee with a secretariat in Natural Resources Canada, part of the Government of Canada, which authorizes the names used and name changes on official federal government maps of Canada created since 1897. The board consists of 27 members, one from each of the provinces and territories, and others from departments of the Government of Canada. The board also is involved with names of areas in the Antarctic through the Antarctic Treaty. Structure The secretariat is provided by Natural Resources Canada. In addition to the provincial and territorial members are members from the following federal government departments: Aboriginal Affairs and Northern Development Canada, Canada Post Corporation, Fisheries and Oceans Canada, Elections Canada, Library and Archives Canada, Department of National Defence, Natural Resources Canada (including Geological Survey of Canada and Canada Centre for Mapping and Earth Observation), Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterfall
A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling on to softer rock, which Erosion, erodes faster, leading to an increasingly high fall. Waterfalls have been studied for their impact on species living in and around them. Humans have had a distinct relationship with waterfalls for years, travelling to see them, exploring and naming them. They can present formidable barriers to navigation along rivers. Waterfalls are religious sites in many cultures. Since the 18th century they have received increased attention as tourist destinations, sources of hydropower, andparticularly since the mid-20th centuryas subjects of research. Definition and terminology A waterfall is gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Above Mean Sea Level
Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The combination of unit of measurement and the physical quantity (height) is called "metres above mean sea level" in the metric system, while in United States customary and imperial units it would be called "feet above mean sea level". Mean sea levels are affected by climate change and other factors and change over time. For this and other reasons, recorded measurements of elevation above sea level at a reference time in history might differ from the actual elevation of a given location over sea level at a given moment. Uses Metres above sea level is the standard measurement of the elevation or altitude of: * Geographic locations such as towns, mountains and other landmarks. * The top of buildings and other structures. * Flying objects such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulatuk, Northwest Territories
Paulatuk is a hamlet located in the Inuvik Region of the Northwest Territories, Canada. It is located adjacent to Darnley Bay, in the Amundsen Gulf. The town was named for the coal that was found in the area in the 1920s, and the Siglitun spelling is ''Paulatuuq'', "place of coal". The area has been inhabited by humans, including the Thule and Copper Inuit, since roughly 1000 CE. Most recently, it is part of the Inuvialuit Settlement Region. Paulatuk was incorporated as a hamlet in 1987 and celebrated the 50th anniversary of its settlement in 2015. Demographics In the 2021 Census of Population conducted by Statistics Canada, Paulatuk had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021. In the 2016 census 235 people were listed as Indigenous and all were Inuit (Inuvialuit). The two principal languages spoken in Paulatuk are Inuinnaqtun ( Inuvialuktun) and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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