Publications associées à Structure sédimentaire

Hydrodynamics of mountain-river confluences and its relationship to sediment transport

Mário Jorge Rodrigues Pereira Da Franca, Sebastián Guillén Ludeña

Mountain confluences are characterized by narrow and steep tributaries that provide important sediment load to the confluence, whereas themain channel supplies the dominant flow discharge. This results in a marked bed discordance between the tributary and ...

American Geophysical Union2017

Effects of Lateral and Vertical Constrictions on Flow in Rough Steep Channels with Bedload

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt

Two-phase flows occurring at flow constrictions such as bridges or open sediment check dams are complex, especially for steep rivers with bedload transport. Dangerous bedload deposition and backwater effects may occur in steep mountain rivers at bridges. I ...

Asce-Amer Soc Civil Engineers2017

Chapter 4.2.1 : The Microbial Ecology of Benthic Environments

Tom Ian Battin

Within the benthic realm life carpets the sedimentary surface of all aquatic ecosystems including the oceans, lakes, rivers and streams. Microorganisms of all types, bacteria, archaea and eukaryotes, inhabit these environments and through their metabolic a ...

American Society for Microbiology2016

Influence of consecutive sediment replenishment on channel bed morphology

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

Dams interrupt the longitudinal connectivity of a river as they store water and trap sediment. When transport capacity downstream of dams exceeds sediment supply, water becomes hungry and channel incision, bed armouring and reduction of morphological diver ...

2016

A parametrical study on secondary flow in sharp open-channel bends: experiments and theoretical modelling

Anton Schleiss, Joris Heyman

The dependence of curvature-induced secondary flow on the curvature ratio H/R (H is the average flow depth and R is the centreline radius of curvature), the Froude number Fr, and the dimensionless roughness coefficient Cf was systematically investigated in ...

Elsevier Science Bv2016

Measurement of the deposition of fine sediments in a channel bed

Giovanni De Cesare, Mário Jorge Rodrigues Pereira Da Franca, Sabine Chamoun, Jessica Zordan

Various instruments allowing the measurements of bottom deposits of fine sediments exist. Different techniques are developed in order to suit diverse operating conditions. The present study considers two high-precision instruments, namely, an electrical re ...

2016

Particle diffusion in non-equilibrium bedload transport simulations

Christophe Ancey

This paper examines the importance of particle diffusion relative to advection in bed load transport. Particle diffusion is not included in existing approaches to bedload transport. Based on recent advances in the probabilistic theory of sediment transport ...

Elsevier Science Inc2016

Detection and reconstruction of large-scale coherent flow structures in gravel-bed rivers

Ulrich Lemmin, Mário Jorge Rodrigues Pereira Da Franca

Large-scale flow structures (LSFS) in the streamwise direction are important features of gravel-bed river flows, because they may contribute to sediment transport and gas exchange. In the present study, these structures are detected using Huang's empirical ...

Wiley-Blackwell2015

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Structure sédimentaire

Sediment Pulses in a Gravel-Bed Flume with Alternate Bars

Hydrodynamics of mountain-river confluences and its relationship to sediment transport

Effects of Lateral and Vertical Constrictions on Flow in Rough Steep Channels with Bedload

The Interplay of In Situ Stress Ratio and Transverse Isotropy in the Rock Mass on Prestressed Concrete-Lined Pressure Tunnels

Chapter 4.2.1 : The Microbial Ecology of Benthic Environments

Influence of consecutive sediment replenishment on channel bed morphology

A parametrical study on secondary flow in sharp open-channel bends: experiments and theoretical modelling

Measurement of the deposition of fine sediments in a channel bed

Particle diffusion in non-equilibrium bedload transport simulations

Detection and reconstruction of large-scale coherent flow structures in gravel-bed rivers

Graph Chatbot

Chattez avec Graph Search

Sediment Pulses in a Gravel-Bed Flume with Alternate Bars

Hydrodynamics of mountain-river confluences and its relationship to sediment transport

The Interplay of In Situ Stress Ratio and Transverse Isotropy in the Rock Mass on Prestressed Concrete-Lined Pressure Tunnels

Chapter 4.2.1 : The Microbial Ecology of Benthic Environments

A parametrical study on secondary flow in sharp open-channel bends: experiments and theoretical modelling

Measurement of the deposition of fine sediments in a channel bed

Particle diffusion in non-equilibrium bedload transport simulations

Detection and reconstruction of large-scale coherent flow structures in gravel-bed rivers

Effects of Lateral and Vertical Constrictions on Flow in Rough Steep Channels with Bedload

Influence of consecutive sediment replenishment on channel bed morphology