SANDT-PRO: SEDIMENT TRANSPORT MEASUREMENTS UNDER IRREGULAR AND BREAKING WAVES

Proceedings of the International Conference on Coastal Engineering

Iván Cáceres¹  Donoghue²  David Hurther³  Peter D Thorne⁴  Dominic A van der A⁵  Tom O'⁵  Jan S Ribberink⁶  Joep van der Zanden⁶ 

[1] Enginyeria Marítima, Universitat Politecnica de Catalunya;Laboratoire des Ecoulements Géophysiques et Industriels, CNRS;Laboratori d'National Oceanographic Centre,;University of Aberdeen;University of Twente

关键词: sediment dynamics;    sediment transport;    breaking waves;    surf zone;    irregular waves;    wave flume experiments;    sheet flow;   

DOI  :  10.9753/icce.v34.sediment.1

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

First results are presented of a measurement campaign done in the large-scale Barcelona CIEM wave flume from October 2013 to January 2014. The aim of the experiments was to improve our understanding of sediment transport processes in the near-shore region. In particular, we focused on the effects of (1) wave breaking and (2) wave irregularity on net sediment transport rates and sediment transport processes. High-resolution measurements were obtained using advanced instrumentation, deployed from a custom-built measuring frame that could be horizontally and vertically positioned. These instruments provide detailed insights in the vertical distributions of sediment fluxes. Preliminary results from the breaking-wave experiments show an onshore transport of sediment prior to breaking, likely to be dominated by wave-nonlinearity effects, and an offshore sediment flux shoreward of breaking, where the sediment fluxes are undertow-dominated.

【 授权许可】

CC BY