Comparative analysis of suspended sand concentration recorded with different techniques in a rippled bed regime

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Ahmari, A.; Oumeraci, H.; Gruene, J.: Comparative analysis of suspended sand concentration recorded with different techniques in a rippled bed regime. In: Proceedings of the Coastal Engineering Conference (2010). DOI:

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Sum total of downloads: 73

Sediment entrainment processes due to the oscillatory flow above rippled and plane sea beds are fundamentally different. Whereas above plane beds the sheet flow or bed load regime dominates and the momentum transfer is primarily caused by turbulent diffusion, above a sea bed covered with long crested vortex ripples the well organised coherent vortex mechanisms induce sediment-laden lee vortices at the ripple crest, which will be detached from the bed ejected into the water column and finally shed when the flow reverses. To investigate the sediment entrainment processes above vortex ripples, a study was carried out in the Large Wave Flume (GWK) aiming firstly to find out the most appropriate measuring technique to determine the suspended sediment concentration both temporarily and spatially. and secondly to analyse the intra-wave sediment entrainment processes around a steep ripple.
License of this version: CC BY 3.0 US
Document Type: article
Publishing status: publishedVersion
Issue Date: 2010
Appears in Collections:Fakultät für Bauingenieurwesen und Geodäsie

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pos. country downloads
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1 image of flag of Germany Germany 43 58.90%
2 image of flag of United States United States 11 15.07%
3 image of flag of Morocco Morocco 7 9.59%
4 image of flag of No geo information available No geo information available 2 2.74%
5 image of flag of Nepal Nepal 2 2.74%
6 image of flag of United Kingdom United Kingdom 2 2.74%
7 image of flag of China China 2 2.74%
8 image of flag of India India 1 1.37%
9 image of flag of France France 1 1.37%
10 image of flag of Czech Republic Czech Republic 1 1.37%
    other countries 1 1.37%

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