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Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis
Maza, M.; Lara, J.L.; Losada, I.J.; Ondiviela, B.; Trinogga, J.; Bouma, T.J. (2015). Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis. Coast. Eng. 106: 73–86. dx.doi.org/10.1016/j.coastaleng.2015.09.010
In: Coastal Engineering: An International Journal for Coastal, Harbour and Offshore Engineers. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0378-3839; e-ISSN 1872-7379, meer
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| Author keywords |
Real vegetation; Large scale 3-D experiments; Collinear and non-collinear waves and currents |
| Auteurs | | Top |
- Maza, M.
- Lara, J.L.
- Losada, I.J., meer
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- Ondiviela, B., meer
- Trinogga, J.
- Bouma, T.J., meer
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| Abstract |
This paper assesses the influence of different flow and vegetation parameters on the wave attenuation providedby two contrasting salt marsh species: Puccinellia maritima and Spartina anglica. Differentwater depths and waveparameters (height and period) are considered for both regular and irregular waves with and without an underlyinguniform current coming from different directions. The study of the submergence ratio (h/hv) influenceshows that wave damping coefficient rapidly decreases as the plant submergence ratio increases. The highnonlinearities found in the wave–current interaction lead to different wave damping patterns in comparisonto wave-only conditions. A smaller wave damping is found for waves and current acting in the same directionand an increase in the wave damping rate is obtained for waves and current flowing in the opposite direction.These wave and current tests allow for the studying of the energy dissipation produced by the vegetation,increasing our knowledge about flowand plant interaction in estuarine conditions. The biomechanical propertiesof the two real salt marshes used in the experiments are also evaluated and related to wave damping revealing ahigher attenuation for stiffer vegetation. Both, the vegetation density and the biomass strongly influence wavedamping. Higher density and biomass values lead to higher attenuation rates for both species. |
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