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The clogging of riverbeds: A review of the physical processes

Giovanni De Cesare, Romain Maxime Dubuis

Fine sediment represents an important part of the solid flux of rivers. Due to the size of these particles, they are often transported as suspended load. They gradually fill the pores of the substrate forming the hyporheic zone or cover the substrate by se ...

2023

Do Antidune Trains Undergo Morphological Changes When These Bedforms Migrate Upstream?

Christophe Ancey, Ivan Pascal

Upstream migrating antidunes develop in streams under supercritical flow conditions. These bedforms are often organised in trains (i.e. sequences of well-developed antidunes). In shallow flows over coarse sediments, the dynamics of a single antidune can be ...

IAHR International Association for Hydro-Environment Engineering and Research2022

Modeling turbulent stream flows over rough permeable beds

Christophe Ancey, Ivan Pascal, Gauthier Paul Daniel Marie Rousseau

In steep streams, turbulent flows run over coarse sediments that are similar in size to flow depth. Under these conditions, a significant part of the flow may seep through the permeable bed. Based on experimental data, this paper presents a model able to r ...

CRC Press2020

Composition and superposition of alluvial deposits drive macro-biological soil engineering and organic matter dynamics in floodplains

Claire Guenat, Pascal Turberg, Rodolphe Schlaepfer, Renée-Claire Le Bayon, Andreas Cedric Schomburg

Soil structure formation in alluvial soils is a fundamental process in near-natural floodplains. A stable soil structure is essential for many ecosystem services and helps to prevent river bank erosion. Plants and earthworms are successful soil engineering ...

2019

Sediment balance of a cascade of alpine reservoirs based on multi-decadal data records

Anton Schleiss, Pedro Filipe De Almeida Manso, Sebastián Guillén Ludeña

Reservoir sedimentation is a major concern in the operational management of dams and appurtenant structures. The increasing volume of sediments deposited in reservoirs leads to a loss of water storage, undermining the purpose itself of the dam for human us ...

2018

Morphological resilience to flow fluctuations of fine sediment deposits in bank lateral cavities

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Carmelo Juez Jiménez, Matthias Thalmann

Lateral cavities are built in the banks of rivers for several purposes: to create harbors, to capture sed- iment, to keep a central navigable channel (i.e., Casiers de Girardon in the Rhone river) or to promote the formation of aquatic habitats if a limite ...

2018

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Elena Battisacco

Dams trap sediment in the upstream reservoir, which may lead to river bed armoring, streambank erosion and failure, channel incision and reduction of the morphological diversity in the downstream river reaches. The replenishment of sediment is a mitigation ...

American Geophysical Union2016

Morphodynamic changes in a natural river confluence due to a hydropower modified flow regime

Anton Schleiss, Marcelo Leite Ribeiro, Simon Wampfler

River channel confluences form important morphological components of any river system. This article presents the results of an investigation on a natural river confluence in Switzerland. The aim of the field work performed at the confluence of the Sarine ( ...

CRC Press/Balkema2014

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Harald Brune, Wolfgang Harbich, Simon Bonanni

We determined the CO oxidation rates for size-selected Pt-n (n is an element of {3,7,10}) clusters deposited onto TiO2(110). In addition, we investigated the cluster morphologies and their mean sizes before and after the reaction. While the clusters are fa ...

American Chemical Society2014

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Varve

The clogging of riverbeds: A review of the physical processes

Do Antidune Trains Undergo Morphological Changes When These Bedforms Migrate Upstream?

Modeling turbulent stream flows over rough permeable beds

Composition and superposition of alluvial deposits drive macro-biological soil engineering and organic matter dynamics in floodplains

Sediment balance of a cascade of alpine reservoirs based on multi-decadal data records

Morphological resilience to flow fluctuations of fine sediment deposits in bank lateral cavities

Integrated modelling approach of urban wet weather discharges into lakes

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Morphodynamic changes in a natural river confluence due to a hydropower modified flow regime

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Graph Chatbot

Chat with Graph Search

Sediment replenishment: Influence of the geometrical configuration on the morphological evolution of channel-bed

Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Pt-n/TiO2(110)-(1x1)

Modeling turbulent stream flows over rough permeable beds

Do Antidune Trains Undergo Morphological Changes When These Bedforms Migrate Upstream?

Morphological resilience to flow fluctuations of fine sediment deposits in bank lateral cavities

Composition and superposition of alluvial deposits drive macro-biological soil engineering and organic matter dynamics in floodplains

The clogging of riverbeds: A review of the physical processes

Sediment balance of a cascade of alpine reservoirs based on multi-decadal data records

Morphodynamic changes in a natural river confluence due to a hydropower modified flow regime

Integrated modelling approach of urban wet weather discharges into lakes