|
Mount Decoeli
Mount Decoeli is a pyramidal peak located in the Kluane Ranges of the Saint Elias Mountains in Yukon, Canada. The mountain is situated northwest of Haines Junction, east of Mount Cairnes, and can be seen from the Alaska Highway midway between the two. Its nearest higher peak is Mount Archibald, to the south. The mountain's name was officially adopted August 12, 1980, by the Geographical Names Board of Canada. James J. McArthur was a Canadian surveyor and mountaineer who undertook extensive surveying in the Yukon during his later years. In 1908 he made the first ascent of Williams Peak accompanied by Edmond Treau de Coeli (1873–1963). Decoeli is pronounced ''deh-coh-lie''. To the Southern Tutchone people, the mountain is known as ''Nàday Gän'', meaning ''Dried Lynx Mountain''. Climbing the peak is a long strenuous day hike of elevation gain over a distance of round trip, with a scramble via the south face and south ridge. On a clear day, the summit offers views into K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Elias Mountains
The Saint Elias Mountains () are a subgroup of the Pacific Coast Ranges, located in southeastern Alaska in the United States, Southwestern Yukon and the very far northwestern part of British Columbia in Canada. The range spans Wrangell-St. Elias National Park and Preserve in the United States and Kluane National Park and Reserve in Canada and includes all of Glacier Bay National Park in Alaska. In Alaska, the range includes parts of the city/borough of Yakutat and the Hoonah-Angoon and Valdez-Cordova census areas. This mountain range is named after Mount Saint Elias, which in turn was named in 1741 by the Danish-born Russian explorer Vitus Bering. Geology The Saint Elias Mountains form the highest coastal mountain range on Earth. It formed due to the subduction of the Yakutat microplate underneath the North American Plate. The Yakutat microplate is a wedge shaped oceanic plateau with a thickness of . Similar to the adjacent Pacific Plate, which has a crustal thickness of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kluane National Park
Kluane National Park and Reserve (; ) are two protected areas in the southwest corner of the territory of Yukon. The National Park Reserve was set aside in 1972 to become a national park, pending settlement of First Nations land claims. It covered an area of . When agreement was reached with the Champagne and Aishihik First Nations over an eastern portion of the Reserve, that part—about —became a national park in 1993, and is a unit of the national park system administered co-operatively with Parks Canada. The larger western section remains a Reserve, awaiting a final land claim settlement with the Kluane First Nation. The park borders British Columbia to the south, while the Reserve borders both British Columbia to the south, and the United States (Alaska) to the south and west. The Reserve includes the highest mountain in Canada, Mount Logan () of the Saint Elias Mountains. Mountains and glaciers, including Donjek Glacier, dominate the park's landscape, covering 83% of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Yukon
Yukon (population as of the 2021 Canadian census, 2021 census 40,232) is in the northwestern corner of Canada and is bordered by Alaska, British Columbia and the Northwest Territories. The sparsely populated territory abounds with natural scenery, snowmelt lakes and perennial white-capped mountains, including many of Canada's highest mountains. The territory's climate is Climate of the Arctic, Arctic in territory north of Old Crow, Yukon, Old Crow, Subarctic climate, subarctic in the region, between Whitehorse and Old Crow, and humid continental climate south of Whitehorse and in areas close to the British Columbia border. Most of the territory is Taiga, boreal forest with tundra being the main vegetation zone only in the extreme north and at high elevations. The territory is about the shape of a right triangle, bordering the U.S. state, American state of Alaska to the west, the Northwest Territories to the east and British Columbia to the south. Yukon covers , of which is land ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Glacier
Rock glaciers are distinctive geomorphological landforms that consist either of angular rock debris frozen in interstitial ice, former "true" glaciers overlain by a layer of talus, or something in between. Rock glaciers are normally found at high latitudes and/or elevations, and may extend outward and downslope from talus cones, glaciers or terminal moraines of glaciers. There are two types of rock glacier: periglacial glaciers (or talus-derived glaciers), and glacial rock glaciers, such as the Timpanogos Glacier in Utah, which are often found where glaciers once existed. Possible Martian rock glacier features have been identified by the Mars Reconnaissance Orbiter spacecraft. A rock glacier, especially if its origin is unclear, can be considered as a discrete debris accumulation. Rock avalanches can be misidentified as rock glaciers, or may evolve into them. Formation The two known factors that must be present in order to create rock glaciers are low ice velocity and per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meltwater
Meltwater (or melt water) is water released by the melting of snow or ice, including glaciers, glacial ice, tabular icebergs and ice shelf, ice shelves over oceans. Meltwater is often found during early spring (season), spring when snow packs and cryosphere#Lake ice and river ice, frozen rivers melt with rising temperatures, and in the ablation zone of glaciers where the rate of snow cover is reducing. Meltwater can be produced during volcanic eruptions, in a similar way in which the more dangerous lahars form. It can also be produced by the heat generated by the flow itself. When meltwater pools on the surface rather than flowing, it forms melt ponds. As the weather gets colder meltwater will often re-freeze. Meltwater can also collect or melt under the ice's surface. These pools of water, known as subglacial lakes can form due to geothermal heat and friction. Melt ponds may also form above and below Arctic sea ice, decreasing its albedo and causing the formation of thin underw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Runoff
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to ''channel runoff'' (or ''stream flow''). It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil. This can occur when the soil is #Saturation excess overland flow, saturated by water to its full capacity, and the rain arrives #Infiltration excess overland flow, more quickly than the soil can absorb it. Surface runoff often occurs because wikt:impervious#Adjective, impervious areas (such as roofs and Road surface, pavement) do not allow water to soak into the ground. Furthermore, runoff can occur either through natural or human-made processes. Surface runoff is a major component of the water cycle. It is the primary agent of Soil erosion#Rainfall and runoff, soil erosion by water. The land area producing runoff that drains to a common point is called a drainage basin. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subarctic Climate
The subarctic climate (also called subpolar climate, or boreal climate) is a continental climate with long, cold (often very cold) winters, and short, warm to cool summers. It is found on large landmasses, often away from the moderating effects of an ocean, generally at latitudes from 50°N to 70°N, poleward of the humid continental climates. Like other Class D climates, they are rare in the Southern Hemisphere, only found at some isolated highland elevations. Subarctic or boreal climates are the source regions for the cold air that affects temperate latitudes to the south in winter. These climates represent Köppen climate classification ''Dfc'', ''Dwc'', ''Dsc'', ''Dfd'', ''Dwd'' and ''Dsd''. Description This type of climate offers some of the most extreme seasonal temperature variations found on the planet: in winter, temperatures can drop to below and in summer, the temperature may exceed . However, the summers are short; no more than three months of the year (but at least on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (temperate), ''D'' (continental), and ''E'' (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the ''E'' group are assigned a seasonal precipitation subgroup (the second letter). For example, ''Af'' indicates a tropical rainforest climate. The system assigns a temperature subgroup for all groups other than those in the ''A'' group, indicated by the third letter for climates in ''B'', ''C'', ''D'', and the second letter for climates in ''E''. Other examples include: ''Cfb'' indicating an oceanic climate with warm summers as indicated by the ending ''b.'', while ''Dwb'' indicates a semi-Monsoon continental climate, monsoonal continental climate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Repeater
In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction. Some types of repeaters broadcast an identical signal, but alter its method of transmission, for example, on another frequency or baud rate. There are several different types of repeaters; a telephone repeater is an amplifier in a telephone line, an optical repeater is an optoelectronic circuit that amplifies the light beam in an optical fiber cable; and a radio repeater is a radio receiver and transmitter that retransmits a radio signal. A broadcast relay station is a repeater used in broadcast radio and television. Overview When an information-bearing signal passes through a communication channel, it is progressively degraded due to loss of power. For example, when a telephone call passes through a wire telephone line, some of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Kennedy
Mount Kennedy is a peak in the Saint Elias Mountains within Kluane National Park, in Yukon, Canada. Its 4250-m to 4300-m (14000-foot) summit lies within 10 km of the Alaska Panhandle. Dusty Glacier lies against it to the north. The Canadian government named the peak in honour of U.S. President John F. Kennedy nearly a year following his assassination. In announcing the decision to the House of Commons on November 20, 1964, prime minister Lester B. Pearson said "I believe it is appropriate that Canada's memorial to him should be a mountain. A mountain is solid and enduring. Mount Kennedy is a graceful, towering, unencumbered peak ... a symbol of aspiration and upward reach." It was at the time, the highest peak in North America that had not yet been climbed. American mountaineer Bradford Washburn who had aided the Canadian government in selecting the peak said that "the Canadians sought a mountain that had not previously been named, that towered lofty and magnificent, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Vancouver
Mount Vancouver is the 15th highest mountain in North America. Its southern side lies in Glacier Bay National Park and Preserve at the top of the Alaska panhandle, while its northern side is in Kluane National Park and Reserve in the southwestern corner of Yukon, Canada. Mount Vancouver has three summits: north, middle, and south, with the middle summit being the lowest. The south summit, Good Neighbor Peak at , straddles the international border while the north summit is slightly higher at . The mountain was named by William Healey Dall in 1874 after George Vancouver, who explored the southeast coast of Alaska from 1792 to 1794. Notable Ascents *1949 ''North Buttress'' (northwest ridge): FA of mountain by William Hainsworth, Alan Bruce-Robertson, Bob McCarter, Noel Odell; with Walter Wood in support. *1975 ''Northeast Ridge'' (to north peak), FA by Cliff Cantor, Bob Dangel, Paul Ledoux, Rob Milne, Hal Murray, Bob Walker, John Yates and Barton DeWolf. *1977 ''West Face'', FA b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Logan
Mount Logan ( ) is the highest mountain in Canada and the second-highest peak in North America after Denali (McKinley). The mountain was named after Sir William Edmond Logan, a Canadian geologist and founder of the Geological Survey of Canada (GSC). Mount Logan is located within Kluane National Park and Reserve in southwestern Yukon, less than north of the Yukon–Alaska border. Mount Logan is the source of the Hubbard and Logan glaciers. Although many shield volcanoes are much larger in size and mass, Mount Logan is believed to have the largest base circumference of any non-volcanic mountain on Earth, including a massif with eleven peaks over . Mount Logan is the 6th most topographically prominent peak on Earth. Due to active tectonic uplifting, Mount Logan is still rising in height (approximately per year). Before 1992, the exact elevation of Mount Logan was unknown and measurements ranged from . In May 1992, a GSC expedition climbed Mount Logan and fixed the current h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
