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Marcelo Leite Ribeiro

Related publications (22)

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Local tributary widening for river rehabilitation

Anton Schleiss, Koen Blanckaert, Marcelo Leite Ribeiro

The hydro-morpho-sedimentary processes in confluence hydrodynamic zones (CHZ) subject to a local widening of the tributary were investigated in a series of laboratory experiments that were representative of the 20 major confluences of the Upper Rhone River ...

John Wiley and Sons2016

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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

Overview of Piano Key weir prototypes and scientific model investigations

Anton Schleiss, Michael Pfister, Marcelo Leite Ribeiro

The interest in Piano Key weirs (PKW) was increasing over the past years, both in terms of application and hydraulic research. Several systematic model test series were per-formed and published so far, originating from different hydraulic laboratories arou ...

Erpicum et al., CRC Press, Boca Raton2013

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Confluences with relatively low discharge and momentum flux ratios where a small steep tributary with a high supply of poorly sorted sediment joins a large, low-gradient main channel commonly occur in nature, but they have not yet been investigated. Measur ...

2012

Hydromorphological implications of local tributary widening for river rehabilitation

Anton Schleiss, Koen Blanckaert, Marcelo Leite Ribeiro, André Roy

The hydromorphological implications of the local widening of a tributary where it enters a confluence were investigated in a laboratory setting that is representative of the 20 major confluences on the channelized Upper Rhone River. Although local tributar ...

American Geophysical Union2012

Piano Key Weirs as efficient spillway structure

Anton Schleiss, Michael Pfister, Marcelo Leite Ribeiro

With increasing of hydrological data records and the development of technologies for flood discharge estimation, as well as higher requirements on dam safety issues, a large number of existing dams require spillway rehabilitation to improve their hydraulic ...

2012

Discharge Capacity of Piano Key Weirs

Anton Schleiss, Martin Peter Bieri, Marcelo Leite Ribeiro

In recent years, spillway rehabilitation has increased in importance and become the subject of many projects worldwide. One solution for this problem is the implementation of a new type of labyrinth spillway, called Piano Key Weir (PK-Weir ). This is an ex ...

2012

Hydraulic design of A-type Piano Key Weirs

Anton Schleiss, Michael Pfister, Marcelo Leite Ribeiro

Piano Key Weirs (PKWs) are an alternative to linear overflow structures, increasing the unit discharge for similar heads and spillway widths. Thus, they allow to operate reservoirs with elevated supply levels, thereby providing additional storage volume. A ...

Taylor & Francis Ltd2012

Influence of tributary widening on confluence morphodynamics

Marcelo Leite Ribeiro

Confluences are the nodes of the fluvial network. They are typically characterized by highly heterogeneous conditions that are favorable for a sound fluvial ecosystem, and play a key role in the connectivity of the river system. During the past centuries, ...

EPFL - LCH2011

Influence of Tributary Widening on Confluence Morphodynamics

Marcelo Leite Ribeiro

In alpine regions of Europe, river training works were typically the reason for the transformation of wide and braided rivers into linear river systems with a lack of structural diversity, i.e. gravel banks, islands, woody debris, riffles or pools. These i ...

EPFL2011