Suspended and bedload transport in the surfzone: implications for sand transport models

Joep Van Der Zanden, Dominic A. Van Der A, Tom O'Donoghue, David Hurther, Ivan Caceres, Peter D. Thorne, Jebbe J. van der Werf, Suzanne J. M. H. Hulscher, Jan S. Ribberink

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

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Abstract

This paper presents results obtained during a large-scale wave flume experiment focused at measuring hydrodynamics and sediment transport processes in the wave breaking region. The experiment involved monochromatic plunging breaking waves over a mobile bed barred profile consisting of D50 = 0.24 mm sand. Vertical profiles of velocity, turbulence, sand concentration and sand fluxes were measured at 12 cross-shore locations, covering the shoaling region up to the inner surf zone. Particularly high-resolution profiles were obtained near the bed within the wave bottom boundary layer, using an acoustic sediment concentration and velocity profiler (ACVP). Sheet flow concentration and particle velocities were measured at two locations near the bar crest using two conductivity-based concentration measurement tanks (CCM+). Total transport rates, obtained from the evolving bed profile measurements, were decomposed into suspended and bedload transport contributions across the bar. The present paper presents a summary of the key findings of the experiment, which are used to discuss existing approaches for modeling suspended and bed load transport in the surf zone.
Original languageEnglish
Title of host publicationCoastal Engineering Proceedings
EditorsPatrick Lynett
PublisherCoastal Engineering Research Council
Pages1-14
Number of pages14
ISBN (Print)9780989661133
DOIs
Publication statusPublished - 2016
Event35th International Conference on Coastal Engineering - Antalya, Turkey
Duration: 17 Nov 201620 Nov 2016

Publication series

NameCoastal Engineering Proceedings
PublisherCoastal Engineering Research Council
Number35
ISSN (Print)2156-1028

Conference

Conference35th International Conference on Coastal Engineering
CountryTurkey
CityAntalya
Period17/11/1620/11/16

Keywords

  • sand transport
  • breaking waves
  • wave flume experiment
  • boundary layer processes
  • sheet flow
  • morphodynamic models

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