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Mount Wake
Mount Wake is a mountain summit located in the Alaska Range, in Denali National Park and Preserve, in Alaska, United States. It is situated on the west side of the Ruth Gorge, southeast of Denali and southwest of The Moose's Tooth. The nearest higher neighbor is Mount Dickey, to the north. Mount Bradley lies to the north, and Mount Johnson lies to the southeast. Despite its relatively low elevation, it is notable for its north face with over 4,000 feet of vertical sheer granite. The mountain was named by famed explorer Dr. Frederick Cook for his friend Charles Wake. Climate Based on the Köppen climate classification, Mount Wake is located in a Tundra climate zone with long, cold, snowy winters, and cool summers. Weather systems are forced upwards by the Alaska Range (orographic lift), causing heavy precipitation in the form of snowfall. Winter temperatures can drop below −20 °F with wind chill factors below −30 °F. The months May through June offer the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska Range
The Alaska Range is a relatively narrow, mountain range in the Southcentral Alaska, southcentral region of the U.S. state of Alaska, from Lake Clark at its southwest endSources differ as to the exact delineation of the Alaska Range. ThBoard on Geographic Namesentry is inconsistent; part of it designates Iliamna Lake as the southwestern end, and part of the entry has the range ending at the Telaquana and Neacola Rivers. Other sources identify Lake Clark, in between those two, as the endpoint. This also means that the status of the Neacola Mountains is unclear: it is usually identified as the northernmost subrange of the Aleutian Range, but it could also be considered the southernmost part of the Alaska Range. to the White River (Yukon), White River in Canada's Yukon Territory in the southeast. Denali, the highest mountain in North America, is in the Alaska Range. The range is part of the American Cordillera. The Alaska Range is one of the highest mountain ranges in the world, afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Johnson (Alaska)
Mount Johnson is an mountain summit located in the Alaska Range, in Denali National Park and Preserve, in Alaska, United States. It is situated on the west side of the Ruth Gorge, southeast of Denali and south-southwest of The Moose's Tooth. The nearest higher neighbor is Mount Wake, to the northwest. Despite its relatively low elevation, it is notable for its north face with over 4,000 feet of vertical sheer granite with climbing routes called the ''Escalator'' and ''Stairway to Heaven''. The first ascent of the peak was made in 1979 by Gary Bocarde, Charlie Head, John Lee, and Jon Thomas via the south ridge. The mountain was named by famed explorer Dr. Frederick Cook who claimed the first ascent of Mount McKinley in 1906, but was later disproved. Emory Richard Johnson (1864–1950) was the president of the Geographical Society of Philadelphia (1898–1912) at the time that Cook explored Ruth Gorge in 1906. Climate Based on the Köppen climate classification, Mount John ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Matanuska-Susitna Borough, Alaska
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Alaska
The geology of Alaska includes Precambrian igneous and metamorphic rocks formed in offshore terranes and added to the western margin of North America from the Paleozoic through modern times. The region was submerged for much of the Paleozoic and Mesozoic and formed extensive oil and gas reserves due to tectonic activity in the Arctic Ocean. Alaska was largely ice free during the Pleistocene, allowing humans to migrate into the Americas. Geologic History, Stratigraphy & Tectonics Compared with other areas of the North American continent, Alaska formed in the recent geologic past. Until 200 million years ago, western North America terminated at the Rocky Mountains, 120 miles further inland than the current shoreline, until the addition of the Yukon-Tanana Terrane. The Birch Creek Schist is the oldest rock in Alaska's interior and forms the core of the Yukon-Tanana Terrane with muscovite-quartz schist, mica quartzite and graphite schist. This intensely folded and rock unit extends f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Peaks Of Alaska
This article comprises three sortable tables of major mountain peaks of the U.S. State of Alaska. The summit of a mountain or hill may be measured in three principal ways: #The topographic elevation of a summit measures the height of the summit above a geodetic sea level. The first table below ranks the 100 highest major summits of Alaska by elevation. #The topographic prominence of a summit is a measure of how high the summit rises above its surroundings. The second table below ranks the 100 most prominent summits of Alaska. #The topographic isolation (or radius of dominance) of a summit measures how far the summit lies from its nearest point of equal elevation. The third table below ranks the 50 most isolated major summits of Alaska. __TOC__ Highest major summits Of the 100 highest major summits of Alaska, only Denali exceeds elevation, four peaks exceed , 23 peaks exceed , 61 peaks exceed , and 92 peaks exceed elevation. Five of these peaks lie on the internation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Church (Alaska)
Mount Church is a mountain in the Alaska Range, in Denali National Park and Preserve, overlooking Ruth Glacier. It is situated on the west side of the Ruth Gorge and southeast of Mount Grosvenor, which is the nearest higher neighbor. The mountain was named by famed explorer Dr. Frederick Cook who claimed the first ascent of Mount McKinley in 1906, but was later disproved. Climate Based on the Köppen climate classification, Mount Church is located in a subarctic climate zone with long, cold, snowy winters, and cool summers. Winter temperatures can drop below −20 °C with wind chill factors below −30 °C. The months May through June offer the most favorable weather for climbing or viewing. Gallery File:Mount Church, south.jpg, South Aspect File:Matanuska-Susitna Borough, Alaska 2.jpg, Left → Right: Mount Church, Mount Johnson, Mount Wake, and Mount Bradley File:Grosvenor and Church.jpg, Mt. Grosvenor (left) and Mt. Church (right) appear as snowy twin peaks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orographic Lift
Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and create clouds and, under the right conditions, precipitation. Orographic lifting can have a number of effects, including precipitation, rain shadowing, leeward winds, and associated clouds. Precipitation Precipitation induced by orographic lift occurs in many places throughout the world. Examples include: * The Mogollon Rim in central Arizona * The western slope of the Sierra Nevada range in California. * The western slope of the Wasatch Range in Utah. Specifically the Little and Big Cottonwood Canyons. * The mountains near Baja California North – specifically La Bocana to Laguna Hanson. * The windward slopes of Khasi and Jayantia Hills (see Mawsynram) in the state of Meghalaya in India. * The Western Highlands of Yemen, which rece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tundra Climate
The tundra climate is a polar climate sub-type located in high latitudes and high mountains. It is classified as ET according to the Köppen climate classification. It is a climate which at least one month has an average temperature high enough to melt snow (), but no month with an average temperature in excess of . If the climate occurs at high elevations, it is known as alpine climate. Despite the potential diversity of climates in the ''ET'' category involving precipitation, extreme temperatures, and relative wet and dry seasons, this category is rarely subdivided. Rainfall and snowfall are generally slight due to the low vapor pressure of water in the chilly atmosphere, but as a rule potential evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes. The amount of native tundra biomass depends more on the local temperature than the amount of precipitation. Tundra ... [...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] |
Frederick Cook
Frederick Albert Cook (June 10, 1865 – August 5, 1940) was an American explorer, physician and ethnographer, who is most known for allegedly being the first to reach the North Pole on April 21, 1908. A competing claim was made a year later by Robert Peary, though both men's accounts have since been fiercely disputed; in December 1909, after reviewing Cook's limited records, a commission of the University of Copenhagen ruled his claim unproven. Nonetheless, in 1911, Cook published a memoir of the expedition in which he maintained the veracity of his assertions. In addition, he also claimed to have been the first person to reach the summit of Denali (also known as Mount McKinley), the highest mountain in North America, a claim which has since been similarly discredited. Though he may not have achieved either Denali or the North Pole, his was the first and only expedition where a United States national discovered an Arctic island, Meighen Island. Biography Cook was born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Bradley (Alaska)
Mount Bradley is a mountain summit located in the Alaska Range, in Denali National Park and Preserve, in Alaska, United States. It is situated on the west side of the Ruth Gorge, southeast of Denali and southwest of The Moose's Tooth. Its nearest higher peak is Mount Dickey, to the north, Mount Wake lies to the south, and London Tower rises directly east on the opposite side of The Great Gorge. Despite its relatively low elevation, it is notable for its north face with nearly 5,000 feet of vertical sheer granite. The mountain was named by famed explorer Dr. Frederick Cook for John R. Bradley, a wealthy casino owner from Florida and one of Cook's financial sponsors. Climate Based on the Köppen climate classification, Mount Bradley is located in a subarctic climate zone with long, cold, snowy winters, and cool summers. Temperatures can drop below −20 °F with wind chill factors below −30 °F. The months May through June offer the most favorable weather for vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the northernmost, westernmost, and easternmost (the Aleutian Islands cross the 180th meridian into the eastern hemisphere) state in the United States. It borders the Canadian territory of Yukon and the province of British Columbia to the east. It shares a western maritime border, in the Bering Strait, with Russia's Chukotka Autonomous Okrug. The Chukchi and Beaufort Seas of the Arctic Ocean lie to the north, and the Pacific Ocean lies to the south. Technically, it is a semi-exclave of the U.S., and is the largest exclave in the world. Alaska is the largest U.S. state by area, comprising more total area than the following three largest states of Texas, California, and Montana combined, and is the seventh-largest subnational division i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
