A5037704723- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Coastal and Marine Dynamics
- Geological Modeling and Analysis
- Plant responses to water stress
- Hydrology and Sediment Transport Processes
- Geological and Geophysical Studies
- Soil erosion and sediment transport
- Geochemistry and Geologic Mapping
- Hydrological Forecasting Using AI
- Differential Equations and Numerical Methods
Géosciences Rennes
2021-2023
Université de Rennes
2021-2023
Centre National de la Recherche Scientifique
2021-2022
University of Bremen
2018-2021
Catastrophic sediment release in fluvial systems is largely driven by landsliding that occurs naturally mountain belts during extreme events, such as earthquakes or storms. Sediments are routed through the river system until they stored either permanently alluvial fans and lakes temporarily floodplains. The response to catastrophic has already been studied with 2D numerical models using a single effective grain size. Yet, natural systems, size distribution can span several orders of...
Abstract. Modelling sediment transport is important to understand how fluvial systems respond climatic change or other transient conditions such as catastrophic release. In natural rivers, heterogeneity of properties and variability flow regime result in different modes that all contribute the total load. Le Minor et al. (2022) presented a law for rivers extends from bed load suspended while being relevant wide range grain sizes but not specifically addressing case distribution sizes, which...
Abstract In natural rivers, sediment heterogeneity and flow variability control the diversity of transport modes that occur. Although these different contribute to total transport, a law extending from bed load suspended is, relevant for wide range mixtures conditions is lacking. Besides, transport‐limited assumption often made in modeling fluvial morphodynamics thus potentially misses under‐/over‐capacity regimes associated with particular grain sizes hydraulic conditions. We present Multi...
Multi grain-size transport models that simulate of various grain sizes along with the bed stratigraphy consider only sediment present in an active layer at top substratum participates transport. The thickness this well-mixed may be fixed but also calculated according to coarsest size it contains or shear stress applied surface substratum. However, approach puts emphasis on conservation and availability within layer. This means there is little consideration i) for heterogeneity distribution...