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{{Definition|title=Dune
 
{{Definition|title=Dune
|definition= Ridges or moulds of loose, wind blown sand (fine to medium) forming on the backshore and forming the coastal features at certain locations. Dunes are more or less vegetated. Dunes are active coastal form elements acting as a flexible sand reservoir<ref name="Karsten">Mangor, Karsten. 2004. “Shoreline Management Guidelines”. DHI Water and Environment, 294pp.</ref>. }}
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|definition= Ridges or moulds of loose, wind blown sand (fine to medium) forming on the [[backshore]] and forming the coastal features at certain locations. Dunes are more or less vegetated. Dunes are active coastal form elements acting as a flexible sand reservoir<ref name="Karsten">Mangor, Karsten. 2004. “Shoreline Management Guidelines”. DHI Water and Environment, 294pp.</ref>. }}
  
===Definitions of Dune - Further information===
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Another ‘concept definition’ of [[sand dunes]] is “An accumulation of loose sand heaped up by the wind, commonly found along low-lying seashores above high-tide level, more rarely on the border of large lakes or river valleys, as well as in various desert regions, where there is abundant dry surface sand during some part of the year.” From the European Environment Agency, web site: [http://www.eionet.europa.eu/gemet/concept?cp=7420].
  
At eroding coasts dunes are moving backwards in parallel with the erosion process. Dunes act as a kind of flexible natural protection against erosion and flooding. If the vegetation is damaged by too much traffic or grazing etc. the integrity of the dunes may be endangered<ref name="Karsten"/>.
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Because of the importance of the wind to the mobilisation of sediment, sand dunes develop from sand grains in the size range 0.2-2.0mm.
  
 
==Notes==
 
==Notes==
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At eroding coasts dunes are moving backwards in parallel with the erosion process. Dunes act as a kind of flexible natural protection against [[erosion]] and flooding. If the vegetation is damaged by too much traffic or grazing etc. the integrity of the dunes may be endangered<ref name="Karsten"/>.
  
 
The coastal [[sand dunes]] of Europe are one of the main categories in the Coastal Wikipedia forming one of the main coastal terestrial habitats.  There is also an extensive literature in the Wikipedia [http://en.wikipedia.org/wiki/Sand_dune].
 
The coastal [[sand dunes]] of Europe are one of the main categories in the Coastal Wikipedia forming one of the main coastal terestrial habitats.  There is also an extensive literature in the Wikipedia [http://en.wikipedia.org/wiki/Sand_dune].
  
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The [[erosion]] of dunes resulting from a severe storm surge is also referred to as [[dune erosion]].
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==See also==
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Articles about the protection and [[erosion]] of dunes:
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* [[Types and background of coastal erosion]]: article on two types of erosion, [[dune erosion]] and [[structural erosion]].
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* [[Dune stabilisation]]: article on the protection of dunes against [[erosion]].
  
 
==References==
 
==References==

Huidige versie van 15 sep 2008 om 16:25

Definition of Dune:
Ridges or moulds of loose, wind blown sand (fine to medium) forming on the backshore and forming the coastal features at certain locations. Dunes are more or less vegetated. Dunes are active coastal form elements acting as a flexible sand reservoir[1].
This is the common definition for Dune, other definitions can be discussed in the article

Another ‘concept definition’ of sand dunes is “An accumulation of loose sand heaped up by the wind, commonly found along low-lying seashores above high-tide level, more rarely on the border of large lakes or river valleys, as well as in various desert regions, where there is abundant dry surface sand during some part of the year.” From the European Environment Agency, web site: [1].

Because of the importance of the wind to the mobilisation of sediment, sand dunes develop from sand grains in the size range 0.2-2.0mm.

Notes

At eroding coasts dunes are moving backwards in parallel with the erosion process. Dunes act as a kind of flexible natural protection against erosion and flooding. If the vegetation is damaged by too much traffic or grazing etc. the integrity of the dunes may be endangered[1].

The coastal sand dunes of Europe are one of the main categories in the Coastal Wikipedia forming one of the main coastal terestrial habitats. There is also an extensive literature in the Wikipedia [2].

The erosion of dunes resulting from a severe storm surge is also referred to as dune erosion.

See also

Articles about the protection and erosion of dunes:

References

  1. 1,0 1,1 Mangor, Karsten. 2004. “Shoreline Management Guidelines”. DHI Water and Environment, 294pp.