Concept

Déluge

Publications associées (26)

A Physical Model for the Uprooting of Flexible Vegetation on River Bars

Sediment deposition and bank accretion are promoted by the establishment and growth of pioneer plant species, a direct consequence of plant survival during flood events. Similarly, the uprooting of riparian vegetation on river bars during floods can subseq ...

2019

Hydraulic-morphological habitat assessment in rivers considering residual flow, sediment replenishment and artificial flood events

Severin Stähly

Dams store water and trap sediment in their reservoirs. Downstream river segments, hence, are affected by a limited sediment dynamics. This becomes obvious by river bed incision, limited geomorphological variability and depletion of hydraulic habitats for ...

EPFL2019

Flood frequency matters: Why climate change degrades deep-water quality of peri-alpine lakes

Alfred Johny Wüest

Sediment-laden riverine floods transport large quantities of dissolved oxygen into the receiving deep layers of lakes. Hence, the water quality of deep lakes is strongly influenced by the frequency of riverine floods. Although flood frequency reflects clim ...

Elsevier2016

Extreme flood estimations on a small alpine catchment in Switzerland, the case study of Limmerboden

Anton Schleiss, Javier García Hernández, Fränz Zeimetz

In this paper, a case study on the estimations of extreme floods is described. The watershed chosen for the analysis is the catchment of the Limmernboden dam situated in Switzerland. Statistical methods and the simulation based "Probable Maximum Precipitat ...

Copernicus Gesellschaft Mbh2015

Ecomorphodynamic approaches to river anabranching patterns

Paolo Perona, Benoît Crouzy

We investigate the influence of vegetation on river morphological instabilities using an analytical framework. We first discuss the important role of the hydrological (flooding frequency) and biological (vegetation development rate) timescales. As long as ...

Elsevier2015

Case study – Delta restoration at a steep river mouth

Anton Schleiss, Giovanni De Cesare, Stéphanie Joëlle André, Stéphane Christian Olivier Terrier

The mouth of the Baye de Clarens torrent in Switzerland is currently constrained by lateral training walls, sequent sills and a bridge with a low hydraulic capacity. Due to a bed load trap upstream, few sediments reach the mouth. To improve flood protectio ...

IAHR2015

UAV based multispectral imaging over a lagoon with corals in Reunion Island

Martin Rehak, Yosef Akhtman, Dragos Constantin, Harold Gabriel Eugène Justin Clenet

A UAV-based hyperspectral survey was carried out in September 2014 over the fringing reef of l’Ermitage, Saint Gilles, Reunion Island. This site is of particular interest because it shows signs of major erosion and is subject to sudden flooding occuring du ...

2015

Understanding the relative role of hillslope processes and geomorphology in Alpine catchments

Bettina Schaefli, Francesco Comola

Hydrologic prediction in small Alpine catchments (up 50-200km2) plays a crucial role for water and flood man- agement in downstream areas. In this generally steep environments, understanding the relative role of hydrologic processes in the hillslopes and o ...

2014

Effects of successive floods on bed load transport in a steep flume.

Christophe Ancey, Joris Heyman, Blaise Etienne Marceau Dhont, Pascal Venetz

Rivers in mountainous areas are subject to cyclic perturbations due for instance to summer storms or daily variations in snowmelt. Such phenomena cause successive floods occurring under very similar forcing conditions. However, as shown by several field st ...

2014

Flood Risk Management of the Avançon river – physical model based study

Anton Schleiss, Tamara Ghilardi

The sediment transport capacity of the Avançon river through the city of Bex in Switzerland is limited. During the October 2000 flood event, water levels rose to danger limits. After the flood, the river channel was completely filled with sediments, with a ...

International Research Society Interpraevent2012

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