Sand transport process measurements under large-scale breaking waves

Joep van der Zanden, Dominic Alexander Van Der A, Jan S Ribberink, Thomas O'Donoghue, David Hurther, Ivan Caceres, Peter D Thorne

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.
Original languageEnglish
Title of host publicationCoastal Sediments
EditorsPing Wang, Julie D Rosati, Jun Cheung
PublisherWorld Scientific
ISBN (Electronic) 978-981-4689-98-4
DOIs
Publication statusPublished - Apr 2015

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    van der Zanden, J., Van Der A, D. A., Ribberink, J. S., O'Donoghue, T., Hurther, D., Caceres, I., & Thorne, P. D. (2015). Sand transport process measurements under large-scale breaking waves. In P. Wang, J. D. Rosati, & J. Cheung (Eds.), Coastal Sediments World Scientific . https://doi.org/10.1142/9789814689977_0101