Changes

From Nordan Symposia
Jump to navigationJump to search
2,026 bytes added ,  13:45, 23 May 2010
Created page with 'File:lighterstill.jpgright|frame In [http://en.wikipedia.org/wiki/Topography topography], a '''summit''' is a point on a surface that is higher in [h...'
[[File:lighterstill.jpg]][[File:Summit.jpg|right|frame]]

In [http://en.wikipedia.org/wiki/Topography topography], a '''summit''' is a point on a [[surface]] that is higher in [http://en.wikipedia.org/wiki/Elevation elevation] than all points [[immediately]] adjacent to it. [[Mathematically]], a summit is a local maximum in elevation. The topographic terms "[[acme]]", "apex", "peak", and "zenith" are synonyms.

The term "summit" is generally only used for a [http://en.wikipedia.org/wiki/Mountain mountain] peak with some significant amount of [http://en.wikipedia.org/wiki/Topographic_prominence topographic prominence] (height above the lowest point en route to the nearest higher peak) or [http://en.wikipedia.org/wiki/Topographic_isolation topographic isolation] ([[distance]] from the nearest point of higher elevation); for example, a [http://en.wikipedia.org/wiki/Boulder boulder] next to the main summit of a mountain is not considered a summit. Summits near a higher peak, with some prominence or isolation, but not reaching a certain cutoff [[value]] for these [[quantities]], are often considered subsummits (or subpeaks) of the higher peak, and are [[considered]] as part of the same [http://en.wikipedia.org/wiki/Mountain mountain]. The UIAA definition is that a summit is [[independent]] if it has a prominence of 30 metres or more; it is a mountain if it has a prominence of at least 300 metres.

A [http://en.wikipedia.org/wiki/Pyramidal_peak pyramidal peak] is an exaggerated [[form]] produced by ice [http://en.wikipedia.org/wiki/Erosion erosion] of a mountain top.

Summit may also refer to the highest point along a line, trail, or route. In many parts of the western [http://en.wikipedia.org/wiki/United_States United States], the term refers to the highest point along a road, highway, or railroad. For example, the highest point along Interstate 80 in California is referred to as Donner Summit (not to be confused with Donner Pass, which is located just to the south.)

[[Category: Earth Science]]

Navigation menu