Title:
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Sand and transport process measurements under large-scale breaking waves
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Author:
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Van der Zanden, Joep; Van Der A, Dominic; Ribberink, Jan; O'Donoghue, Tom; Hurther, David; Cáceres Rabionet, Iván; Thorne, Peter D.
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Other authors:
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Universitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima |
Abstract:
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The effects of wave breaking on sediment transport are studied through a new series of mobile-bed experiments in a large-scale wave flume. During the campaign, one experiment involving detailed sand transport process measurements was repeated at 12 different cross-shore location. This procedure allows studying of the cross-shore variation of sand transport processes along the breaking zone. Starting from an initially 1:10 slope followed by a horizontal test section, a breaker bar developed in the breaking region as a result of onshore transport pre-breaking and offshore transport post-breaking. Near-bed suspended sediment fluxes were directed offshore along the complete test section, suggesting that the onshore transport pre-breaking is mainly attributed to bedload. The offshore suspended flux was the sum of an onshore wave-driven component and an offshore current-driven component. The wave-driven contribution to total suspended transport rates seems significant mainly before the breaking point where they account for ~30% of total suspended transport fluxes. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes -Coastal sediments--Transport -Sediment transport -Sediments marins -- Transport |
Rights:
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Document type:
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Article - Submitted version Conference Object |
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