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Theses

Mesures in situ et modélisation du ransport des sédiments en rivière. Application au bassin versant de la Vilaine

Abstract : This thesis aims to study the sediment transport in rivers. Empirical relation between daily water discharge and sediment load is established from data collected in drainage basins of various areas and lithologies. At short space and time scales, physical processes involved in transport phenomena are studied using velocity and concentration profiles in rivers, and from a complementary rheological approach. Theoretical model results are confronted to field measurements. In situ, the variability of mechanical parameters shows the necessity to use environmental tracers to integrate the different sediment transport types. This work focuses on the radionuclides Beryllium-7 and Iodine-131. Tracing methodology is developed and results incorporate the sediment transport kinetics in the river Vilaine
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https://tel.archives-ouvertes.fr/tel-00178882
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Submitted on : Friday, October 12, 2007 - 1:58:33 PM
Last modification on : Friday, April 5, 2019 - 8:03:22 PM
Long-term archiving on: : Sunday, April 11, 2010 - 10:53:34 PM

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  • HAL Id : tel-00178882, version 1

Citation

Philippe Laguionie. Mesures in situ et modélisation du ransport des sédiments en rivière. Application au bassin versant de la Vilaine. Minéralogie. Université Rennes 1, 2006. Français. ⟨tel-00178882⟩

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