Wave farm effects on the coast: The alongshore position

The Science of the Total Environment
Cristobal Rodriguez-DelgadoGregorio Iglesias

Abstract

For wave energy to become a fully-fledged renewable and thus contribute to the much-needed decarbonisation of the energy mix, the effects of wave farms (arrays of wave energy converters) on coastal systems must be addressed. The objective of this work is to investigate the effects of wave farms on the longshore sediment transport and shoreline evolution of a gravel-dominated beach and, in particular, its sensitivity to the longshore position of the farm based on eight scenarios. Nearshore wave propagation patterns are computed by means of a spectral wave propagation model (SWAN), variations in sediment transport rates induced by the farm are calculated, and a one-line model is applied to determine the shoreline position and dry beach area. The significant wave height at breaking is reduced in the lee of the wave farm, dampening sediment transport. We find that changes in the dry beach area induced by the wave farm are highly sensitive to its alongshore position, and may result in: (i) erosion relative to the baseline scenario (without wave farm) in three of the eight scenarios, (ii) accretion in three other scenarios, and (iii) negligible effects in the remaining two. These results prove that the alongshore position of the wave...Continue Reading

Citations

Dec 20, 2020·The Science of the Total Environment·Cristobal Rodriguez-Delgado, Rafael J Bergillos
Aug 25, 2020·The Science of the Total Environment·Ramón Blanco-ChaoManuela Costa-Casais
Jan 14, 2020·The Science of the Total Environment·Cigdem OzkanTalea Mayo
Feb 15, 2019·The Science of the Total Environment·Rafael J BergillosGregorio Iglesias
Oct 1, 2021·The Science of the Total Environment·A Martinez, G Iglesias

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