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Giovanni De Cesare

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Publications associées (219)

Impacts et enjeux de charriage d’une crue artificielle – Exemple de la Petite Sarine 2020 ||| Wirkung und Geschiebeproblematik eines künstlichen Hochwassers – Beispiel der Kleinen Saane 2020

Giovanni De Cesare, Christian Mörtl, Robin Schroff

En octobre 2020, une crue artificielle d’essai a été relâchée dans la Sarine en aval du barrage de Rossens, dans le canton de Fribourg. L’objectif était de redynamiser le tronçon à débit résiduel de 13 km de long, surnommé la « Petite Sarine ». Manquant de ...

2022

Design and temporal issues in Soil Bioengineering structures for the stabilisation of shallow soil movements

Giovanni De Cesare, Massimiliano Schwarz

In the last decades, soil bioengineering has gained considerable popularity worldwide, especially in hillslope, riverbank, and earth embankment stabilisation works. The use of plants as a building material transfers the plant multifunctionality within engi ...

2021

Untersuchung der ökomorphologischen Wirksamkeit von Sedimentzugaben unterhalb von Talsperren [Assessment of the eco-morphological effectiveness of sediment augmentation downstream of dams]

Giovanni De Cesare, Christian Mörtl

The regulation of discharge and the retention of sediments in reservoirs disturb the natural water dynamics in residual flow stretches below reservoirs. However, a dynamic river morphology as well as near-natural hydrological hydrographs are fundamental ...

ETH2021

Measurement of the inner structure of turbidity currents by ultrasound velocity profiling

Giovanni De Cesare, Shun Nomura, Jumpei Hitomi

The inner velocity structure and particle concentration profile of opaque turbidity currents were mea- sured simultaneously by ultrasound velocity profilers. Currents consisting of a quartz particle suspension were generated by using the lock-exchange meth ...

2021

River morphology and sediment transport processes numerical modeling applied to the fluvial environment of the Rhône River in Valais

Giovanni De Cesare, Azin Amini, Jean-Noël Saugy, Francesc Molné Correig

Within the frame of the Third Rhône Correction, the river bend in Martigny is considered a top priority measure for flood protection. During the preliminary project, physical and numerical modeling tests were considered necessary. For the latter, the softw ...

International Research Society INTERPRAEVENT2021

Reservoir Level Rise under Extreme Driftwood Blockage at Ogee Crest

Giovanni De Cesare, Michael Pfister, Loïc Bénet

Dams are civil structures essential to modern civilization. However, they can be a threat if not properly designed and operated. A particular risk that potentially can lead to dam failure is the blocking of the spillway inlet with driftwood or debris. This ...

2021

Wirkungskontrolle einer Sedimentzugabe: Habitatvielfalt und Kolmation

Giovanni De Cesare, Christian Mörtl, Robin Schroff

In einer Restwasserstrecke der Saane wurde 2016 zur Sanierung der kolmatierten Gewässersohle und zur Aufwertung der Lebensräume ein künstliches Hochwasser ausgelöst und mit einer Sedimentzugabe gekoppelt. Die mittelfristigen Wirkungen der Sedimentzugabe wu ...

2021

Ultrasonic Doppler flow velocity measurements as a co-indicator for the eco-morphological assessment in a residual flow reach

Giovanni De Cesare, Christian Mörtl, Robin Schroff

It is a complex task to evaluate the effects of a river rehabilitation measure on the riverscape’s habitat mosaic. This study investigated the medium term effects of a rehabilitation measure in a residual flow reach downstream of a hydroelectric dam. The r ...

ETH2021

Hybrid modeling of the Massongex-Bex-Rhône hydropower plant on the Rhone river in Switzerland

Giovanni De Cesare, Samuel Luke Vorlet, Pedram Sahraei

Hydropower currently ensures two-thirds of Switzerland's domestic energy production and aims to gain more importance in the medium and long term due to nuclear abandon. In this respect, the Massongex-Bex-Rhone (MBR) run-of-river hydropower plant project on ...

Springer2021

Praxisorientierte Forschung im Bereich Wasserbau und Ökologie [Practice-oriented research in hydraulic engineering and ecology]

Giovanni De Cesare

Wasserbau und Ökologie (W&Ö) ist ein schweizweites Forschungsprogramm zu den Themen Renaturierung, Biodiversitätsförderung, Wassernutzung und Naturgefahren im Bereich von Fliessgewässern und den davon direkt beeinflussten Mündungsbereichen und Ufern der Se ...

ETH2021

Development of a Semi-distributed Hydrological Model for Glaciated Punatshangchu Basin in Bhutan

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Jessica Zordan, Vasker Sharma

Hydropower plays a pivotal role in the socio-economic development of Bhutan where water resource is abundantly available and therefore several hydropower plants are being planned and a few under construction. However, with the presence of several potential ...

2021

Bedload transport assessment on a physical model of a large river widening using ultrasonic Doppler velocity measurements

Giovanni De Cesare, Azin Amini, Jean-Noël Saugy

The 3rd correction of the Rhône River is the largest flood protection project in Switzerland so far. Covering a length of 162 km, it aims to protect some 100,000 people and prevent flood damages, which could raise up to 10 billion Swiss francs for major ev ...

ETH Zurich, Laboratory of Food Process Engineering2021

Experimental and Numerical Study on Scour-Protection Methods in a Stilling Basin: Case Study of Chancy-Pougny Dam

Giovanni De Cesare, Erik Bollaert, Anton Schleiss, Sabine Chamoun, Davide Wüthrich

Chancy-Pougny is a run-of-river dam on the Swiss–French border constructed in the early 1920s. Since its commissioning, the operation of the four spillway gates has been responsible for a progressive erosion of the stilling basin. The future scour potentia ...

2021

Design of orifices for throttled surge tanks

Giovanni De Cesare, Anton Schleiss, Nicolas Jean François Pascal Ghislain Adam

Orifices can be used for throttling surge tanks, which allows for increased design discharge at existing powerplants without significant geometrical modifications. To improve knowledge about the behaviour of orifices and their cavitation risk, a systematic ...

2021

Closure to "Reservoir Level Rise under Extreme Driftwood Blockage at Ogee Crest" by Loic Benet, Giovanni De Cesare, and Michael Pfister

Giovanni De Cesare, Michael Pfister

2021

Sediment Augmentation for River Rehabilitation and Management—A Review

Giovanni De Cesare, Christian Mörtl

Sediment management is an important part of river rehabilitation and management. Global case studies provide a growing number of examples of successful sediment augmentation measures that can counter the adverse effects of disturbed sediment regimes. The i ...

2021

Third correction of the Rhône River in Switzerland: physical and numerical modelling of the “Martigny bend” priority measure

Giovanni De Cesare, Stéphanie Joëlle André, Azin Amini, Pierre Bourqui, Jean-Noël Saugy, Irene Almeida Samora

The Rhône River, second largest in Switzerland, has already been corrected twice (1863-1893; 1930-1960) to ensure safety and economic development in the Rhône valley. However, in October 2000, the highest flood of the century occurred showing the limitatio ...

International Research Society INTERPRAEVENT2021

Bemessungsbeispiele von Tosbecken unterhalb von Treppenschussrinnen = Design examples of stilling basins downstream of stepped spillways

Giovanni De Cesare, Anton Schleiss, Ivan Stojnic

Advances of roller compacted concrete (RCC) in the construction of concrete dams has significantly influenced the development of stepped spillways. The latter are now more frequently implemented in the rocky abutments of embankment dams. The energy dissipa ...

2021

Influence of collars on reduction in scour depth at two piers in a tandem configuration

Giovanni De Cesare, Anton Schleiss, Sargol Memar

Bridge failure, due to local scour at bridge pier foundations, has become a critical issue in river and bridge engineering, which might lead to transportation disruption, loss of lives and economic problems. A practical solution to prevent bridge collapses ...

SPRINGER INTERNATIONAL PUBLISHING AG2020

Effet des bois flottants obstruant un évacuateur de crue dans des conditions extrêmes

Giovanni De Cesare, Michael Pfister, Loïc Bénet

Le transport de bois flottants peut induire des obstructions aux ouvrages hydrauliques et limiter leurs fonctionnalités et leurs capacités de décharge. Le blocage de l’entrée d’un évacuateur de crue d’un barrage par des bois flottants représente un risque ...

2020

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