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Sediment transport measurements in the Schelde-estuary: How do acoustic backscatter, optical transmission and direct sampling compare? Thant, S.; Plancke, Y. (2016). Sediment transport measurements in the Schelde-estuary: How do acoustic backscatter, optical transmission and direct sampling compare?, in: Erpicum, S. et al. Proceedings of the 4th IAHR Europe Congress, Liege, Belgium, 27-29 July 2016: Sustainable Hydraulics in the Era of Global Change. pp. 193-200 In: Erpicum, S. et al. (Ed.) (2016). Proceedings of the 4th IAHR Europe Congress, Liege, Belgium, 27-29 July 2016: Sustainable Hydraulics in the Era of Global Change. CRC Press/Balkema: London. ISBN 978-1-138-02977-4. xxi, 194 pp.

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Open Repository 294813 [ OWA ]
Documenttype: Congresbijdrage

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Trefwoorden

Measurement Transport > Sediment transport ANE, Schelde-estuarium [Marine Regions]

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Auteurs		Top
Thant, S. Plancke, Y., meer

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Abstract

Measuring sediment transport remains one of the most challenging aspects in river engineering. In 2014, Flanders Hydraulics Research performed several field measurement campaigns in the Schelde-estuary. The goal of these campaigns was to gather datasets for numerical model (Delft3D andTelemac-suites) validation of sediment transport and to increase our system understanding. During these campaigns both optical and acoustic measurement techniqueswere used. Differences in sediment concentration patternswere found between different techniques. In 2015 a specific field campaign was organized to calibrate both the acoustic backscatter signal (Nortek AquaDopp) and the optical transmission signal (LISST-100X), while collecting multiple water and sediment samples using pump samplers and a water trap. A good agreement was found between measured sediment concentration from the direct samplers and the acoustic backscatter and LISST-100X data. Although, differences can occur, most likely because of the sand-silt rate changes, the presence of flocs and the accuracy of the instruments.

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