Simulation of potential meandering belt width using a physics-based morphodynamic model

Amini, H., Monegaglia, F., Ridolfi, M., Tubino, M., Zolezzi, G. and Lanzoni, S. 2024. Simulation of potential meandering belt width using a physics-based morphodynamic model. Presented at: 11th International Conference on Fluvial Hydraulics (River Flow 2022), Kingston & Ottawa, Canada, 8-10 November 2022. Published in: Ferreira da Silva, Ana Maria, Rennie, Colin, Gaskin, Susan, Lacey, Jay and MacVicar, Bruce eds. River Flow 2022. London: CRC Press, pp. 456-461. 10.1201/9781003323037-52

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Abstract

Meandering is a common feature of single thread streams cutting through alluvial floodplains. In general, two main classes of meandering rivers can be recognized: confined and free. Confined Meanders are typically restricted through a valley with unerodible borders. Conversely, free meanders evolve unconstrained throughout the floodplain, self-generating the so called meander belt. This width of the belt, is usually estimated on the basis of empirical or semi-empirical observations. In this work, we build on this latter concept and use the semi-analytical model to predict the meander belt width of free meanders. Our results show that the meander belt width based on the potential migration (according to Lane and Lewin (1977)) is about 30 percent greater than the estimates suggested by previous works. Moreover, the present analysis can support the idea which was used for the analysis of confined meanders.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	CRC Press
ISBN:	9781003323037
Date of First Compliant Deposit:	11 April 2025
Date of Acceptance:	1 August 2025
Last Modified:	17 Apr 2025 10:24
URI:	https://orca.cardiff.ac.uk/id/eprint/177596

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