Landform

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<gallery> <gallery>
Image:Mountain-permafrost-patterns-and-temperature-gradients.jpg|'''[[Alpine permafrost]]''' (most '''[[permafrost]]''' is located in high latitudes (i.e. land in close proximity to the North and South poles)) may exist at high '''[[altitudes]]''' in much lower '''[[latitudes]]'''. Image:Mountain-permafrost-patterns-and-temperature-gradients.jpg|'''[[Alpine permafrost]]''' (most '''[[permafrost]]''' is located in high latitudes (i.e. land in close proximity to the North and South poles)) may exist at high '''[[altitudes]]''' in much lower '''[[latitudes]]'''.
-Image:Arete cirque horn.JPG|'''[[Arete]]''' a steep-sided, sharp-edged bedrock ridge formed by two '''[[glaciers]]''' eroding away on opposite sides of the '''[[ridge]]'''.+Image:Arete cirque horn.JPG|'''[[Arete]]''' a steep-sided, sharp-edged bedrock '''[[ridge]]''' formed by two '''[[glaciers]]''' eroding away on opposite sides of the '''[[ridge]]'''.
Image:Kjeragbolten-boulder.jpg|Kjeragbolten, a 5 m³ '''[[boulder]]''' wedged in a mountain crevasse by the edge of the Kjerag mountain[http://en.wikipedia.org/wiki/Kjerag] Image:Kjeragbolten-boulder.jpg|Kjeragbolten, a 5 m³ '''[[boulder]]''' wedged in a mountain crevasse by the edge of the Kjerag mountain[http://en.wikipedia.org/wiki/Kjerag]
Image:Fajada in snow.jpg|Chaco and Fajada '''[[Butte]]''' [http://en.wikipedia.org/wiki/Fajada_Butte] is located in northwestern New Mexico. Image:Fajada in snow.jpg|Chaco and Fajada '''[[Butte]]''' [http://en.wikipedia.org/wiki/Fajada_Butte] is located in northwestern New Mexico.
Image:Cirque mountain.jpg|A steep-walled '''[[mountain]]''' basin which usually forms the blunt end of a '''[[valley]]'''. (French for "circus.") Image:Cirque mountain.jpg|A steep-walled '''[[mountain]]''' basin which usually forms the blunt end of a '''[[valley]]'''. (French for "circus.")
-Image:Red Mountain Pass.jpg|In a range of '''[[hills]]''' or, especially, of '''[[mountains]]''', a pass (also gap, notch, col,''' [[saddle]]''', hause, bwlch (Welsh), brennig or bealach (Gaelic)) is a path that allows the crossing of a '''[[mountain]]''' chain.+Image:Red Mountain Pass.jpg|In a range of '''[[hills]]''' or, especially, of '''[[mountains]]''', a pass (also gap, notch, '''[[col]]''',''' [[saddle]]''', hause, bwlch (Welsh), brennig or bealach (Gaelic)) is a path that allows the crossing of a '''[[mountain]]''' chain.
Image:Snow lake cliff.PNG|'''[[Cliff]]''' is a significant vertical, or near vertical, '''[[rock]]''' exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in '''[[mountainous]]''' areas, '''[[escarpments]]''' and along '''[[rivers]]'''. Image:Snow lake cliff.PNG|'''[[Cliff]]''' is a significant vertical, or near vertical, '''[[rock]]''' exposure. Cliffs are formed as erosion landforms due to the processes of erosion and weathering that produce them. Cliffs are common on coasts, in '''[[mountainous]]''' areas, '''[[escarpments]]''' and along '''[[rivers]]'''.
-Image:Crevasses-alpine-glacier.jpg|'''[[Crevasses]]''' cracks in the '''[[glacial]]''' '''[[ice]]'''. The upper 30 meters of glacial ice is somewhat brittle, and as the glacier flows, cracks develop. Crevasses rarely extend to depths below approximately 30 meters because the ice below that too plastic and the cracks close.+Image:Crevasses-alpine-glacier.jpg|'''[[Crevasses]]''' cracks in the '''[[glacial]]''' '''[[ice]]'''. The upper 30 meters of '''[[glacial ice]]''' is somewhat brittle, and as the glacier flows, cracks develop. Crevasses rarely extend to depths below approximately 30 meters because the ice below that too plastic and the cracks close.
Image:Glacial landscape.svg.png Image:Glacial landscape.svg.png
-Image:Blue Mountain Canada Aerial Shoot Ski Cross Inspection .jpg|'''[[Escarpment]]''' is a steep '''[[slope]]''' or long '''[[cliff]]''' that results from erosion or faulting and separates two relatively level areas of differing '''[[elevations]]'''.+Image:Blue Mountain Canada Aerial Shoot Ski Cross Inspection .jpg|'''[[Escarpment]]''' is a steep '''[[slope]]''' or long '''[[cliff]]''' that results from '''[[erosion]]''' or faulting and separates two relatively level areas of differing '''[[elevations]]'''.
Image:Foothills-going-to-Waterton-National-Park.JPG|'''[[Foothills]]''' are geographically defined as gradual increases in hilly areas at the base of a '''[[mountain range]]'''. They are a transition zone between plains and low relief '''[[hills]]''' to the adjacent topographically high '''[[mountains]]'''. Image:Foothills-going-to-Waterton-National-Park.JPG|'''[[Foothills]]''' are geographically defined as gradual increases in hilly areas at the base of a '''[[mountain range]]'''. They are a transition zone between plains and low relief '''[[hills]]''' to the adjacent topographically high '''[[mountains]]'''.
-Image:Columbia icefield-Canada.jpg|'''[[Glacier]]''' is a perennial mass of '''[[ice]]''' which moves over land. A glacier forms in locations where the mass accumulation of '''[[snow]]''' and '''[[ice]]''' exceeds ablation over many years. Columbia Icefields, Alberta Canada+Image:Columbia icefield-Canada.jpg|'''[[Glacier]]''' is a perennial mass of '''[[ice]]''' which moves over land. A '''[[glacier]]''' forms in locations where the mass accumulation of '''[[snow]]''' and '''[[ice]]''' exceeds '''[[ablation]]''' over many years. Columbia Icefields, Alberta Canada
Image:Airdrie Canada glacier erratic.jpg|'''[[Glacial erratic]]''' is a piece of rock that differs from the size and type of rock native to the area in which it rests. Image:Airdrie Canada glacier erratic.jpg|'''[[Glacial erratic]]''' is a piece of rock that differs from the size and type of rock native to the area in which it rests.
Image:Columbia Icefield 2.jpg|'''[[Glaciation]]''' is a glacial period is an interval of time within an '''[[ice age]]''' that is marked by colder '''[[temperatures]]''' and '''[[glacier]]''' advances. (Columbia Icefields, Alberta Canada) Image:Columbia Icefield 2.jpg|'''[[Glaciation]]''' is a glacial period is an interval of time within an '''[[ice age]]''' that is marked by colder '''[[temperatures]]''' and '''[[glacier]]''' advances. (Columbia Icefields, Alberta Canada)
Image:Glacial lake.JPG|'''[[Glacial lake]]''' is a lake with origins in a melted '''[[glacier]]'''. Image:Glacial lake.JPG|'''[[Glacial lake]]''' is a lake with origins in a melted '''[[glacier]]'''.
Image:Base gully gros morne.jpg|'''[[Gully]]''' is a '''[[landform]]''' created by running '''[[water]]''' '''[[eroding]]''' sharply into '''[[soil]]''', typically on a hillside. Gullies resemble large ditches or small '''[[valleys]]''', but are metres to tens of metres in depth and width. Image:Base gully gros morne.jpg|'''[[Gully]]''' is a '''[[landform]]''' created by running '''[[water]]''' '''[[eroding]]''' sharply into '''[[soil]]''', typically on a hillside. Gullies resemble large ditches or small '''[[valleys]]''', but are metres to tens of metres in depth and width.
-Image:Hanging valley.jpg|'''[[Hanging Valley]]''': a valley eroded by a small tributary '''[[glacier]]''', such that the '''[[elevation]]''' of the valley floor is higher than the elevation of the '''[[valley]]''' floor that the hanging valley joins. The erosive power of glaciers is dictated by their size: the larger a glacier, the farther down into the landscape it can '''[[erode]]'''.+Image:Hanging valley.jpg|'''[[Hanging Valley]]''': a valley eroded by a small tributary '''[[glacier]]''', such that the '''[[elevation]]''' of the '''[[valley]]''' floor is higher than the '''[[elevation]]''' of the '''[[valley]]''' floor that the hanging valley joins. The erosive power of glaciers is dictated by their size: the larger a glacier, the farther down into the landscape it can '''[[erode]]'''.
Image:Couloir and headwall.jpg|'''[[Headwall]]''' the steep back-wall of a '''[[cirque]]'''. Image:Couloir and headwall.jpg|'''[[Headwall]]''' the steep back-wall of a '''[[cirque]]'''.
Image:Stockhorn Thun Switzerland.jpg|'''[[Horn]]''' a pyramid-shaped mountain '''[[peak]]''' created by several '''[[glaciers]]''' '''[[eroding]]''' away at different sides of the same '''[[mountain]]''' Image:Stockhorn Thun Switzerland.jpg|'''[[Horn]]''' a pyramid-shaped mountain '''[[peak]]''' created by several '''[[glaciers]]''' '''[[eroding]]''' away at different sides of the same '''[[mountain]]'''
Image:Glaciers mountain terms.jpg|'''[[Glacier]]''' and '''[[Mountain]]''' terms Image:Glaciers mountain terms.jpg|'''[[Glacier]]''' and '''[[Mountain]]''' terms
-Image:Columbia Icefield-Saskatchewan Glacier.jpg|'''[[Ice field]]''' is an area less than '''50,000 km²''' (19,305 mile²) of ice often found in the colder '''[[climates]]''' and higher '''[[altitudes]]''' of the world where there is sufficient '''[[precipitation]]'''. It is an extensive area of interconnected '''[[valley]]''' '''[[glaciers]]''' from which the higher peaks rise as nunataks.+Image:Columbia Icefield-Saskatchewan Glacier.jpg|'''[[Ice field]]''' is an area less than '''50,000 km²''' (19,305 mile²) of ice often found in the colder '''[[climates]]''' and higher '''[[altitudes]]''' of the world where there is sufficient '''[[precipitation]]'''. It is an extensive area of interconnected '''[[valley]]''' '''[[glaciers]]''' from which the higher peaks rise as ['''[nunataks]]'''.
Image:Lake Louise Canada.jpg|'''[[Lake]]''' (from Latin lacus) is a terrain feature (or physical feature), a body of '''[[liquid]]''' on the surface of a world that is localized to the bottom of basin (another type of '''[[landform]]''' or terrain feature; that is, it is not global). Image:Lake Louise Canada.jpg|'''[[Lake]]''' (from Latin lacus) is a terrain feature (or physical feature), a body of '''[[liquid]]''' on the surface of a world that is localized to the bottom of basin (another type of '''[[landform]]''' or terrain feature; that is, it is not global).
Image:Mtn slide air.jpg|thumb|350px|'''[[Landslide]]''' or '''[[landslip]]''' is a geological phenomenon which includes a wide range of ground movement, such as '''[[rock]]''' falls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. Image:Mtn slide air.jpg|thumb|350px|'''[[Landslide]]''' or '''[[landslip]]''' is a geological phenomenon which includes a wide range of ground movement, such as '''[[rock]]''' falls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments.

Revision as of 09:02, 5 July 2010

Landform or physical feature comprises a geomorphological unit, and is largely defined by its surface form and location in the landscape, as part of the terrain, and as such, is typically an element of topography.

Landform elements also include seascape and oceanic waterbody interface features such as bays, peninsulas, seas and so forth, including sub-aqueous terrain features such as submersed mountain ranges, volcanoes, and the great ocean basins.


Reference

  • Wikipedia Landform [3]

Gallery



Reference

  1. Wikipedia Valley [4]
  2. Virtual Geography Department Project Hanging Valley [5]

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