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Coast erosion: verschil tussen versies

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#REDIRECT [[Coastal erosion]]
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{{Definition|title=Coast erosion
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|definition= Coast erosion is the process of wearing away material from the coastal profile due to imbalance in the supply and export of material from a certain section. It takes place in the form of scouring in the foot of the cliffs or in the foot of the dunes. Coast erosion takes place mainly during strong winds, high waves and high tides and [[storm surge]] conditions, and results in coastline retreat. The rate of erosion is correctly expressed in volume/length/time, e.g. in m<sup>3</sup>/m/year, but erosion rate is often used synonymously with coastline retreat, and thus expressed in m/year<ref name="Karsten">Mangor, Karsten. 2004. “Shoreline Management Guidelines”. DHI Water and Environment, 294pp.</ref>. <br/><br/>
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}}
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==Notes==
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Erosion will take place on the [[shoreface]] and on the [[beach]] if the export is greater than the supply of material, this means that the level of the seabed and the beach will decrease. The deficit can be due to both cross-shore processes and longshore processes. Erosion due to cross-shore processes mainly occurs during extreme events associated with [[storm surge]], which partially is a reversible process (this is also referred to as [[dune erosion]]). The most important reason for long-term erosion is a deficit in the littoral drift budget, which is often caused by a deficit in supply of sand to the area in question (this process is also referred to as [[structural erosion]]).
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Erosion forms an important element in the process of [[coastal squeeze]] <ref> Doody, J.P. (2004) 'Coastal squeeze' - an historical perspective. ''Journal of Coastal Conservation'', '''10/1-2''', 129-138.</ref>.
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==See also==
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* [[Types and background of coastal erosion]]: explanation of two different types of coastal erosion, [[dune erosion]] and [[structural erosion]].
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* Articles on different causes of erosion: [[Natural causes of coastal erosion]] and [[Human causes of coastal erosion]]
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* Articles on the background of erosion: [[Coastal Hydrodynamics And Transport Processes]]
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* Erosion for different coastal types: [[Accretion and erosion for different coastal types]], see also [[Coastal zone characteristics]] (description of different coastal types) and [[Classification of coastlines]] (classification of different coastal types).
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* [[Biogeomorphology of aquatic systems]]: Interaction between ecology and geomorphology of a system
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* [[Coastal Erosion along the Changjiang Deltaic Shoreline]]
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==References==
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<references/>

Versie van 3 dec 2008 om 13:35

Definition of Coast erosion:
Coast erosion is the process of wearing away material from the coastal profile due to imbalance in the supply and export of material from a certain section. It takes place in the form of scouring in the foot of the cliffs or in the foot of the dunes. Coast erosion takes place mainly during strong winds, high waves and high tides and storm surge conditions, and results in coastline retreat. The rate of erosion is correctly expressed in volume/length/time, e.g. in m3/m/year, but erosion rate is often used synonymously with coastline retreat, and thus expressed in m/year[1].

This is the common definition for Coast erosion, other definitions can be discussed in the article

Notes

Erosion will take place on the shoreface and on the beach if the export is greater than the supply of material, this means that the level of the seabed and the beach will decrease. The deficit can be due to both cross-shore processes and longshore processes. Erosion due to cross-shore processes mainly occurs during extreme events associated with storm surge, which partially is a reversible process (this is also referred to as dune erosion). The most important reason for long-term erosion is a deficit in the littoral drift budget, which is often caused by a deficit in supply of sand to the area in question (this process is also referred to as structural erosion).

Erosion forms an important element in the process of coastal squeeze [2].

See also

References

  1. Mangor, Karsten. 2004. “Shoreline Management Guidelines”. DHI Water and Environment, 294pp.
  2. Doody, J.P. (2004) 'Coastal squeeze' - an historical perspective. Journal of Coastal Conservation, 10/1-2, 129-138.