Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Onshore-offshore sediment transport on beaches
Abstract The onshore-offshore transport of sediment on beaches in analyzed by considering the time-averaged behaviour of a control volume, bounded by the wave breaking zone and by the beach face. Interactions are determined between the wave radiation stress, the wave set-up, the shear stress on the beach face and the beach permeability. Simple theoretical relationships are derived which specify beach slope in terms of incident wave attack and beach material properties. These relationships indicate that coarser sediment beaches are steeper because of the higher beach permeability. It is also shown that any particular beach will decrease its slope as the wave attack increases according to an inverse function of the wave height. Not only the beach permeability, but also the sediment grading curve is shown to be a key factor in determining beach slope. The theory is used to discuss and explain some observed behaviour on real beaches and the possible implications for beach failure under storm attack.
Onshore-offshore sediment transport on beaches
Abstract The onshore-offshore transport of sediment on beaches in analyzed by considering the time-averaged behaviour of a control volume, bounded by the wave breaking zone and by the beach face. Interactions are determined between the wave radiation stress, the wave set-up, the shear stress on the beach face and the beach permeability. Simple theoretical relationships are derived which specify beach slope in terms of incident wave attack and beach material properties. These relationships indicate that coarser sediment beaches are steeper because of the higher beach permeability. It is also shown that any particular beach will decrease its slope as the wave attack increases according to an inverse function of the wave height. Not only the beach permeability, but also the sediment grading curve is shown to be a key factor in determining beach slope. The theory is used to discuss and explain some observed behaviour on real beaches and the possible implications for beach failure under storm attack.
Onshore-offshore sediment transport on beaches
Quick, M.C. (Autor:in)
Coastal Engineering ; 15 ; 313-332
06.11.1990
20 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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