Difference between revisions of "Coast erosion"

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{{Review
 
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|name=Dominic Reeve
 
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|AuthorID=13423
 
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{{Definition|title=Coast erosion
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{{Definition|title=Coastal 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 manifests itself in the scouring in the foot of the cliffs or in the foot of the dunes. Coast erosion occurs 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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|definition= Coastal erosion is the process of wearing away material from the [[Shoreface profile|coastal profile]] due to imbalance in the supply and export of material from a certain section of the coast.  
 
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==Notes==
 
==Notes==
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Erosion takes place on the [[shoreface]] and on the [[beach]] if the export is greater than the supply of material, meaning 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 takes place on the [[shoreface]] and on the [[beach]] if the export is greater than the supply of material, meaning that the level of the seabed and the beach will decrease. The deficit can be due to both cross-shore processes and longshore processes. It manifests itself in the scouring in the foot of the cliffs or in the foot of the dunes. Coastal erosion occurs mainly during strong winds, high waves and high tides and [[storm surge]] conditions, and results in coastline retreat. Erosion due to cross-shore processes is a (partially) reversible process (see [[Dune erosion]]). 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. 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 (also referred to as [[structural erosion]]).
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==Related articles==
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: Articles listed on the category page [[:Category:Coastal protection|coastal protection]]
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and in particular articles on different causes of erosion:
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: [[Natural causes of coastal erosion]]
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: [[Human causes of coastal erosion]]
  
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and articles on the background of erosion:
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: [[Dealing with coastal erosion]]
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: [[Bruun rule for shoreface adaptation to sea-level rise]]
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: [[Dune erosion]]
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: [[Littoral drift and shoreline modelling]]
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: [[Shoreface profile]]
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: [[Active coastal zone]]
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: [[Coastal Hydrodynamics And Transport Processes]]
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: [[Coastal Erosion along the Changjiang Deltaic Shoreline]]
  
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Erosion is an important factor 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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An introduction to the interaction between ecology and geomorphology of a system is given in [[Biogeomorphology of coastal systems]]  
  
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==See also==
 
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* Articles on different causes of erosion: [[Natural causes of coastal erosion]], [[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 [[Characteristics of sedimentary shores]] (description of different coastal types) and [[Classification of sandy coastlines]] (classification of different coastal types).
 
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* [[Dune erosion]]
 
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* [[Littoral drift and shoreline modelling]]
 
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* [[Biogeomorphology of coastal systems]]: Interaction between ecology and geomorphology of a system
 
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* [[Bruun rule for shoreface adaptation to sea-level rise]]
 
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* [[Coastal Erosion along the Changjiang Deltaic Shoreline]]
 
  
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==Further reading==
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: USACE, 2012. Coastal engineering manual. Report No 110-2-1100. Washington DC: US Army Corps of Engineers
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: Mangor, K., Drønen, N. K., Kaergaard, K.H. and Kristensen, N.E. 2017. Shoreline management guidelines. DHI https://www.dhigroup.com/marine-water/ebook-shoreline-management-guidelines
  
  
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==References==
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<references/>
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{{Review
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|name=Dominic Reeve
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|AuthorID=13423
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}}

Revision as of 20:21, 10 November 2021


Definition of Coastal erosion:
Coastal 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 of the coast.
This is the common definition for Coastal erosion, other definitions can be discussed in the article

Notes

Erosion takes place on the shoreface and on the beach if the export is greater than the supply of material, meaning that the level of the seabed and the beach will decrease. The deficit can be due to both cross-shore processes and longshore processes. It manifests itself in the scouring in the foot of the cliffs or in the foot of the dunes. Coastal erosion occurs mainly during strong winds, high waves and high tides and storm surge conditions, and results in coastline retreat. Erosion due to cross-shore processes is a (partially) reversible process (see Dune erosion). 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. 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 (also referred to as structural erosion).


Related articles

Articles listed on the category page coastal protection

and in particular articles on different causes of erosion:

Natural causes of coastal erosion
Human causes of coastal erosion

and articles on the background of erosion:

Dealing with coastal erosion
Bruun rule for shoreface adaptation to sea-level rise
Dune erosion
Littoral drift and shoreline modelling
Shoreface profile
Active coastal zone
Coastal Hydrodynamics And Transport Processes
Coastal Erosion along the Changjiang Deltaic Shoreline

An introduction to the interaction between ecology and geomorphology of a system is given in Biogeomorphology of coastal systems


Further reading

USACE, 2012. Coastal engineering manual. Report No 110-2-1100. Washington DC: US Army Corps of Engineers
Mangor, K., Drønen, N. K., Kaergaard, K.H. and Kristensen, N.E. 2017. Shoreline management guidelines. DHI https://www.dhigroup.com/marine-water/ebook-shoreline-management-guidelines



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