Publications de Romain Nathan Hippolyte Merlin Van Mol

Review on the Bed Scouring in the Constriction Zone of Local River Widenings

Giovanni De Cesare, Romain Nathan Hippolyte Merlin Van Mol

Local river widenings serve as a technique for restoring channelized rivers and mitigating river incision. The zone downstream where the widened reach transitions into the channelized river is referred to as the constriction zone. While numerous authors ha ...

CRC Press2025

Bedload transport continuity through a series of local widenings on the Rhone River

Giovanni De Cesare, Romain Nathan Hippolyte Merlin Van Mol

The Third Correction of the Rhone River in Switzerland will implement approximately 120 km of restoration measures to reduce flood risks and improve ecological conditions including a combination of river channel widening and river bed lowering. The river c ...

CRC Press2025

Design improvements for combined sediment-wood detention at mountain streams

Giovanni De Cesare, Azin Amini, Romain Nathan Hippolyte Merlin Van Mol

Bedload transport and driftwood in steep mountain streams can cause serious damage to local communities in the vicinity of watercourses. To prevent such damage, check dams are typically built to hold back sediment and driftwood. However, by completely inte ...

Informa UK Limited2025

Effects of flow guide walls on sediment flushing in peaking hydropower reservoirs

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Romain Nathan Hippolyte Merlin Van Mol

Reservoir sedimentation is known to be a key issue worldwide. One operational measure to deal with sediment accumulations is flushing; however, efficiency is often lacking. The goal of this study is thus to improve the effectiveness and efficiency of flush ...

LNEC2024

Effects of flow guide walls on sediment flushing in peaking hydropower reservoirs

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Romain Nathan Hippolyte Merlin Van Mol

Reservoir sedimentation is known to be a key issue worldwide. One operational measure to deal with sediment accumulations is flushing; however, efficiency is often lacking. The goal of this study is thus to improve the effectiveness and efficiency of flush ...

ETH Zurich2024

Enhancing Flood Resilience: Sediment Management in Le Bez Torrent

Giovanni De Cesare, Azin Amini, Romain Nathan Hippolyte Merlin Van Mol

In the canton of Bern, Switzerland, the “Le Bez” torrent is known for its flash floods, causing sediment and wood debris buildup in Villeret village settled on the alluvial fan. To mitigate this issue, a sediment/wood trap system is being implemented upstr ...

Swiss Academy of Sciences (SCNAT)2023

Physical Modeling of Sediment Trap for Le Bez River, Switzerland

Giovanni De Cesare, Azin Amini, Romain Nathan Hippolyte Merlin Van Mol, Najla Schaller

The Le Bez torrent in the Canton of Bern, Switzerland, is known for flashy and violent floods due to its watershed topography and vegetation conditions. Such floods can bring a substantial amount of sediment and wood into the small downstream village of Vi ...

2023

Experimental investigations on plunge pool protection measures for Ilarion Dam in Greece

Anton Schleiss, Giovanni De Cesare, Azin Amini, Romain Nathan Hippolyte Merlin Van Mol

Ilarion Dam is a 130 m high earthfill dam at Aliakmon River in northern Greece. The dam was commissioned in 2010. It has two spillway tunnels with ski jumps at the outlets. The two spillways are designed to release a total discharge of 5'500 m3/s during th ...

2022

Plunge pool scour and bank erosion: assessment of protection measures for Ilarion dam by physical and numerical modelling

Anton Schleiss, Giovanni De Cesare, Azin Amini, Romain Nathan Hippolyte Merlin Van Mol, Christian Mörtl

The 130 m high Ilarion Dam is built on the Aliakmon River in northern Greece. Its two spillways are equipped with ski jumps to deflect high-velocity jets towards the centre of the plunge pool. Significant scouring occurred in the pool during two major floo ...

2022