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Ragged Peak (Denali National Park)
Ragged Peak is a summit in Alaska, United States. Description Ragged Peak is located in the Alaska Range and in Denali National Park and Preserve. It is situated northeast of Denali, the highest summit in North America. Precipitation runoff from the mountain's slopes drains to the McKinley River. Topographic relief is significant as the summit rises above the Brooks Glacier in 0.75 mile (1.2 km). The mountain's descriptive name was applied in 1948 by Bradford Washburn because the peak is composed of extremely rugged, jagged rock that has been highly fractured by frost action. The toponym was officially adopted in 1948 by the United States Board on Geographic Names. Climate Based on the Köppen climate classification, Ragged Peak is located in a tundra climate zone with long, cold, snowy winters, and mild summers. Winter temperatures can drop below −20 °F with wind chill factors below −30 °F. This climate supports the Brooks and Muldrow Glaciers surr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wedge Peak (Alaska)
Wedge Peak is a mountain in the Alaska Range, in Denali National Park and Preserve. Wedge Peak lies to the northeast of Denali overlooking Brooks Glacier and Muldrow Glacier Muldrow Glacier, also known as McKinley Glacier, is a large glacier in Denali National Park and Preserve in the U.S. state of Alaska. Native names for the glacier include, Henteel No' Loo' and Henteel No' Loot. The glacier originates from the Gr .... Mount Mather (Alaska) is immediately to the east. The peak was named in 1945 by the U.S. Army Air Force cold weather test expedition. See also * Mountain peaks of Alaska References {{DEFAULTSORT:Wedge Peak Alaska Range Mountains of Denali Borough, Alaska Denali National Park and Preserve Mountains of Alaska ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wedge Peak, Alaska Range
A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width..''McGraw-Hill Concise Encyclopedia of Science & Technology'', Third Ed., Sybil P. Parker, ed., McGraw-Hill, Inc., 1992, p. 2041. Although a short wedge with a wide angle may do a job faster, it requires more force than a long wedge with a narrow angle. The force is applied on a flat, broad surface. This energy is transported to the pointy, sharp end of the wedge, hence the force is transported. The wedge simply transports energy in the form of friction and collects it to the pointy end, consequently breaking the item. History Wedges have exi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Denali National Park And Preserve
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 300 metres (1,000 feet) 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Brooks
Mount Brooks is a mountain peak in the central Alaska Range in Denali National Park and Preserve. The mountain is part of a ridge extending northeastward from the main Denali massif, which includes Pyramid Peak and Mount Silverthrone. The ridge lies between Brooks Glacier and Traleika Glacier, overlooking Muldrow Glacier to the north. The summit is partly covered by ice. Climate Based on the Köppen climate classification, Mount Brooks is located in a tundra climate zone with long, cold, snowy winters, and mild summers. Winter temperatures can drop below −20 °F with wind chill factors below −30 °F. This climate supports the Brooks Traleika, and Muldrow Glaciers surrounding the peak. The months May through June offer the most favorable weather for climbing or viewing Mount Brooks. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Deception (Alaska)
Mount Deception is a mountain in the Alaska Range, in Denali National Park and Preserve. Mount Deception lies east-southeast of Denali, overlooking Brooks Glacier. The glacier-covered mountain was named by a U.S. Army crash investigation party on November 13, 1944, who were the first to ascend the mountain while investigating an airplane crash that happened in September 1944. 1944 plane crash On September 18, 1944, a US Army C-47 which took off from Elmendorf Air Force Base in Anchorage, Alaska, en route to Ladd Army Airfield in Fairbanks, Alaska Fairbanks is a home rule city and the borough seat of the Fairbanks North Star Borough in the U.S. state of Alaska. Fairbanks is the largest city in the Interior region of Alaska and the second largest in the state. The 2020 Census put the po .... For reasons unknown the plane traveled off course crashing into the then unnamed peak killing all 15 passengers and 4 crew members. A 44-man rescue expedition reached the crash site in ... [...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 ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Mountains And Mountain Ranges Of Denali National Park And Preserve
Mountains in Denali National Park and Preserve are part of the Alaska Range, with several subsidiary ranges included within the overall Alaska Range. Denali (also known as Mount McKinley), is the highest peak in the park and the highest peak in North America at The names listed here reflect the official names in the USGS U.S. Board on Geographic Names database. They in most cases exclude subsidiary peaks of larger mountains — McKinley alone has dozens of prominent points above 15,000 feet. The final version of this list will include all named peaks in the park and preserve above and a selection of prominent named peaks of lesser height. Central Alaska Range The central Alaska Range is dominated by the enormous Denali and its complex of subsidiary summits, spurs and buttresses. Of the other central Alaska Range summits, only Mount Foraker substantially exceeds , and most prominent peaks are in the – range. * Denali - ; * Kahiltna Dome - ; * Kahiltna Peaks - ; * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muldrow Glacier
Muldrow Glacier, also known as McKinley Glacier, is a large glacier in Denali National Park and Preserve in the U.S. state of Alaska. Native names for the glacier include, Henteel No' Loo' and Henteel No' Loot. The glacier originates from the Great Icefall of Harper Glacier on the eastern side of Denali. The glacier moves generally eastward, receiving Traleika Glacier and Brooks Glacier as tributaries, then turning northward to emerge from the Alaska Range as the source of the McKinley River. Muldrow Glacier was renamed by Alfred Hulse Brooks in 1902 in honor of U.S. Geological Survey topographer Robert Muldrow. In 2021, the glacier was noted to be growing in a surge that greatly exceeds the scant previous records of its status. In April that year scientists were documenting growth of the glacier at one hundred times its normal rate, advancing up to ninety feet a day during the prior few months. See also * List of glaciers A glacier ( ) or () is a persistent body of d ... [...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. undra climate https://www.britannica.com/science/tundra-climateThe Editors of Encyclopaedia Britannica, 2019 It is classified as ET according to 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 . 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 amou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notably in 1918 and 1936. Later, the climatologist Rudolf Geiger (1894–1981) introduced some changes to the classification system, which is thus sometimes called the Köppen–Geiger climate classification system. The Köppen climate classification divides climates into five main climate groups, with each group being divided based on seasonal precipitation and temperature patterns. 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'' i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Board On Geographic Names
The United States Board on Geographic Names (BGN) is a federal body operating under the United States Secretary of the Interior. The purpose of the board is to establish and maintain uniform usage of geographic names throughout the federal government of the United States. History On January 8, 1890, Thomas Corwin Mendenhall, superintendent of the US Coast and Geodetic Survey Office, wrote to 10 noted geographers "to suggest the organization of a Board made up of representatives from the different Government services interested, to which may be referred any disputed question of geographical orthography." President Benjamin Harrison signed executive order 28 on September 4, 1890, establishing the ''Board on Geographical Names''. "To this Board shall be referred all unsettled questions concerning geographic names. The decisions of the Board are to be accepted y federal departmentsas the standard authority for such matters." The board was given authority to resolve all unsettled q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
