Effects of sediment influx on sediment transport characteristics in a river channel

S. Rabab, M. Gormley, L. Beevers, A. Cuthbertson

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

Abstract

Flume experiments were conducted under unsteady hydrograph flows with sediment feed and no-sediment feed conditions specified at the upstream boundary. Bedload transport data were collected and analysed to investigate the effects of sediment supply on sediment transport characteristics in terms of bedload transport rates and hysteresis, as well as total bedload yields over the hydrograph duration. Higher sediment transport rates, and consequently 4-19% higher total bedload yields were found during no-sediment feed tests, as compared to equivalent sediment feed tests. Clockwise hysteresis was dominant during the no-sediment feed tests, while a frequent counter-clockwise hysteresis was observed during sediment supply tests. The results showed that hysteresis pattern had changed dramatically from counter-clockwise to clockwise during no sediment feed tests. These findings highlight the importance of sediment supply in laboratory investigations and differentiate the expected sediment transport characteristics in alluvial and supply-limited river channels.

Original languageEnglish
Title of host publicationRiver Flow 2020
Subtitle of host publicationProceedings of the 10th Conference on Fluvial Hydraulics (Delft, Netherlands, 7-10 July 2020)
EditorsWim Uijttewaal, Mario J. Franca, Daniel Valero, Victor Chavarrias, Claudia Ylla Arbos, Ralph Schielen, Ralph Schielen, Alessandra Crosato
PublisherRoutledge Taylor & Francis Group
Pages259-266
Number of pages8
ISBN (Electronic)9780367627737, 9781003110958
Publication statusPublished - 28 Aug 2020
Event10th Conference on Fluvial Hydraulics, River Flow 2020 - Virtual, Online, Netherlands
Duration: 7 Jul 202010 Jul 2020

Publication series

NameRiver Flow 2020 - Proceedings of the 10th Conference on Fluvial Hydraulics

Conference

Conference10th Conference on Fluvial Hydraulics, River Flow 2020
Country/TerritoryNetherlands
CityVirtual, Online
Period7/07/2010/07/20

Fingerprint

Dive into the research topics of 'Effects of sediment influx on sediment transport characteristics in a river channel'. Together they form a unique fingerprint.

Cite this