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Phenomenological model of suspended sediment transport in a small catchment.
- Source :
-
Earth Surface Dynamics . 2023, Vol. 11 Issue 3, p363-381. 19p. - Publication Year :
- 2023
-
Abstract
- We develop a phenomenological model of suspended sediment transport on the basis of data acquired in the Capesterre river, which drains a small tropical catchment in Guadeloupe. The model correctly represents the concentration of suspended sediment during floods, provided that the relation between concentration and water level forms a counterclockwise loop. In the model, the properties of the sediment and of the river are all lumped into four parameters: a settling velocity related to the size of the suspended sediment, a threshold water level which acts as a proxy for the threshold shear stress, a characteristic entrainment rate, and a dimensionless exponent. The value of the parameters changes from one flood to the next, probably reflecting changes in the characteristics of the river and the fine sediment. Finally, a test of the model against data acquired in a small catchment in the French Alps suggests that the model is versatile enough to be used in diverse hydrological settings. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21966311
- Volume :
- 11
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Earth Surface Dynamics
- Publication Type :
- Academic Journal
- Accession number :
- 164967455
- Full Text :
- https://doi.org/10.5194/esurf-11-363-2023