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'''Coastal Hydrodynamics And Transport Processes
 
'''Coastal Hydrodynamics And Transport Processes
 
'''
 
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[[Image:tombolo2.jpg|thumb|left|260px|Tombolo formation behind coastal breakwater]]
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[[Image:intensity.jpg|thumb|left|500px|'''Figure 4: Main differences between extensive, semi-intensive and intensive mariculture systems in terms of resource use and potential environmental risk (Tacon and Foster, 2003)'''<ref>Tacon AGJ, Forster IP (2003): Aquafeeds and the environment: political implications; Aquaculture 226, p. 181-189</ref>).]]
  
The hydrodynamic conditions or processes, that come about from waves transforming over a coastal profile and generating wave set up and longshore currents, will result in movement and transport of the sediments (e.g. sand) present in the profile. This is referred to as littoral transport processes and is the main subject of this article. However, transport of fine sediments will also be discussed, but only very briefly.
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Generally it is aquaculture in marine environments.
 
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If one takes a closer look there are different definitions. Some limit mariculture to the raising of marine plants and animals in the ocean itself (EEA, 2008<ref>European Environmental agency; www.glossary.eea.europa.eu/EEAGlossary/M/mariculture, 01/28/08</ref>).
<u>Sediment transport in general</u>
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Others also include species from brackish water and include culture methods that take place in salty and brackish water that is not situated in the ocean (CBD, 2004<ref name="CBD">Secretariat of the Convention on Biological Diversity (2004): Solutions for sustainable mariculture-avoiding the adverse effects of mariculture on biological diversity, CBD Technical Series No. 12</ref>, Wecker, 2006<ref name="wecker">Wecker B (2006): Nährstofffluss in einer geschlossenen Kreislaufanlage mit integrierter Prozesswasserklärung über Algenfilter-Modell und Wirklichkeit.;  http://e-diss.uni-kiel.de/math-nat.html, 02/15/08</ref>)
 
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. Here this wider definition is referred to...
The sediment on the seabed is transported when it is exposed to large enough forces, or shear stresses, by the water movements. These movements can be caused by the current or by the wave orbital velocities or a combination of both...
 

Revision as of 13:23, 2 July 2010

Coastal Hydrodynamics And Transport Processes

Figure 4: Main differences between extensive, semi-intensive and intensive mariculture systems in terms of resource use and potential environmental risk (Tacon and Foster, 2003)[1]).

Generally it is aquaculture in marine environments. If one takes a closer look there are different definitions. Some limit mariculture to the raising of marine plants and animals in the ocean itself (EEA, 2008[2]). Others also include species from brackish water and include culture methods that take place in salty and brackish water that is not situated in the ocean (CBD, 2004[3], Wecker, 2006[4])

. Here this wider definition is referred to...
  1. Tacon AGJ, Forster IP (2003): Aquafeeds and the environment: political implications; Aquaculture 226, p. 181-189
  2. European Environmental agency; www.glossary.eea.europa.eu/EEAGlossary/M/mariculture, 01/28/08
  3. Secretariat of the Convention on Biological Diversity (2004): Solutions for sustainable mariculture-avoiding the adverse effects of mariculture on biological diversity, CBD Technical Series No. 12
  4. Wecker B (2006): Nährstofffluss in einer geschlossenen Kreislaufanlage mit integrierter Prozesswasserklärung über Algenfilter-Modell und Wirklichkeit.; http://e-diss.uni-kiel.de/math-nat.html, 02/15/08