Difference between revisions of "Structural erosion"

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==Structural erosion==
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{{Definition|title=Structural coastal erosion, also called 'ongoing coastal erosion'
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{{Definition|title=Structural erosion
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|definition= Structural [[erosion]] is long-term erosion of a stretch of [[coast]]. Gradual losses of sediment with time occur in separate cross-sectional profiles.}}
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|definition= Structural erosion is long-term erosion of a stretch of coast. Also looking at an individual cross-shore profile, gradual losses of sediments with time might be noticed.}}
 
  
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Looking at the volume of sediments in the control volume area as a function of time, we will see a diminishing tendency with time.
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Structural coastal erosion should be distinguished from temporal coastal erosion, such as [[dune erosion]]. For an explanation of different types of coastal erosion, see [[Natural causes of coastal erosion]] and [[Dealing with coastal erosion]].  
  
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A gradient in the longshore sediment transport is often the reason of structural erosion. See Fig.3 for the development with time of an eroding cross-shore profile.
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The article [[Human causes of coastal erosion]] provides an overview of the different impacts of hard structures on the structural erosion of a stretch of coast.
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More information on man-induced coastal erosion can also be found in:
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* [[Typical examples of structural erosion]]
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* [[Hard coastal protection structures]]
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* [[Port breakwaters and coastal erosion]]
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* [[Accretion and erosion for different coastal types]]
  
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Some examples of structural erosion are given in the article [[Typical examples of structural erosion]].
  
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Notice the change with time of the control volume. Notice also that the mainland is eroding as well, although the longshore sediment transports, and so the gradients in the longshore sediment transport, do not occur at the mainland level. Events with some dune erosion redistribute sediments from the dunes to the beach and foreshore. In this case the recovery of the dunes is only partly; at the end of the day also the mainland retreats.
 
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Rather long structure with a horizontal deck on series of piles extending perpendicular to the coast into the sea. Serving as a landing place for vessels, as a recreation facility, as a measuring facility for coastal processes or as a part of sand by-pass facility.
 
  
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[[category:Theme 8]]
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{{author
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|AuthorID=11540
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|AuthorName= Jan van de Graaff
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|AuthorFullName= Jan van de Graaff}}

Latest revision as of 15:53, 27 March 2021

Definition of Structural coastal erosion, also called 'ongoing coastal erosion':
Structural erosion is long-term erosion of a stretch of coast. Gradual losses of sediment with time occur in separate cross-sectional profiles.
This is the common definition for Structural coastal erosion, also called 'ongoing coastal erosion', other definitions can be discussed in the article

Structural coastal erosion should be distinguished from temporal coastal erosion, such as dune erosion. For an explanation of different types of coastal erosion, see Natural causes of coastal erosion and Dealing with coastal erosion.

The article Human causes of coastal erosion provides an overview of the different impacts of hard structures on the structural erosion of a stretch of coast. More information on man-induced coastal erosion can also be found in:

Some examples of structural erosion are given in the article Typical examples of structural erosion.


The main author of this article is Jan van de Graaff
Please note that others may also have edited the contents of this article.
Citation: Jan van de Graaff (2021): Structural erosion. Available from http://www.coastalwiki.org/wiki/Structural_erosion [accessed on 22-11-2024]
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