Concept

Fleuve Jaune

Publications associées (32)

Sediment management measures for river restoration and flood protection in alpine valleys

Sediment transport plays a key role in the morphological and ecological value of river ecosystems. The present study explores the design of sediment management measures for a flood control and revitalization project in an alpine valley of the Swiss Alps. T ...

Crc Press-Taylor & Francis Group2014

Innertkirchen compensation basin outlets – Flap gate combined with small stilling basin

Michael Pfister, Fränz Zeimetz

In the context of an update of their hydropower plants, the Hydroelectric Company KWO plans an adaption of their powerhouses Innertkirchen 1 and 2. One aim of the project is, among many others, an optimized restitution regime of the turbined water to the A ...

2013

Vegetation establishment in convectively accelerated streams

Paolo Perona, Benoît Crouzy, Peter Molnar

We study the conditions for vegetation establishment within river reaches with converging boundaries. Common to many such rivers worldwide is the existence of a limiting front (e.g., Figure 1a) beyond which all the riverbed vegetation is uprooted by floodi ...

2013

Flow processes near smooth and rough (concave) outer banks in curved open channels

Anton Schleiss, Koen Blanckaert, Alexandre José Pessanha De Oliveira Caimoto Duarte

Flow processes near the (concave) outer bank in curved river reaches are investigated in a laboratory flume, with focus on the influence of the bank roughness. An outer-bank cell of reversed secondary flow occurs for all the investigated roughness configur ...

Amer Geophysical Union2012

Biomass selection by floods and related timescales: Part 1. Experimental observations

Paolo Perona, Benoît Crouzy, Katharina Maria Edmaier, Peter Molnar, Zhe Jiang

Several research investigations have explored the interaction between morphodynamic and vegetation growth processes from both the modelling and the experimental viewpoints. Results have mainly been concerned with morphologic analyses of the effects of vege ...

Elsevier2012

Measures to reduce dynamic plunge pool pressures generated by a free jet

Michael Pfister

Spillways often include a flip bucket as terminal energy dissipator, combined with a plunge pool. To prevent scour at the river bed for large jet fall heights additional measures are required, such as terminal chute widening or increase of the plunge pool ...

CRC Press, Taylor & Francis Group2011

Kárahnjúkar Dam spillway, Iceland: Swiss contribution to reduce dynamic plunge pool pressures generated by a high-velocity jet

Michael Pfister

Spillways often include a flib bucket as terminal energy dissipator, combined with a plunge pool. For large jet fall heights, the residual energy may provoke scour at the river bed. Additional measures are then required, such as chute widening, increase of ...

2011

Lavey Dam - Physical and numerical analysis of flow and sediment transport in the Rhone River

Anton Schleiss, Martin Peter Bieri

As several of other run-of:river hydropower plants, the hydraulic scheme of Lavey on the Rhone River in Switzerland is concerned by continuous reservoir sedimentation. To determine the flood evacuation capacity of the weir as well as the flow distribution ...

2010

An observation-based stochastic model for sediment and vegetation dynamics in the floodplain of an Alpine braided river

Paolo Perona, Peter Molnar

Riparian vegetation dynamics in Alpine rivers are to a large extent driven by the timing and magnitude of floods which inundate the floodplain, transport sediment, erode the river bed, and create and destroy suitable germination sites. Here we present a st ...

American Geophysical Union2009

Stochastic sediment-Vegetation dynamics in an Alpine braided river

Paolo Perona, Peter Molnar

We propose a stochastic modelling framework to simulate the spatially lumped sediment and vegetation dynamics in a flood plain of a braided gravel bed river as an alternative to detailed morphodynamic modelling. The idea is that floods intermittently erode ...

2008

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