Publications related to Slope | EPFL Graph Search

Using video detection of snow surface movements to estimate weak layer crack propagation speeds

Johan Alexandre Philippe Gaume, Bertil Trottet, Alec van Herwijnen

Dry-snow slab avalanches release due to crack propagation in a weak snow layer under a cohesive snow slab. Crack propagation speeds can provide insights into the potential size of avalanches and inform fracture and avalanche release models. Despite their i ...

CAMBRIDGE UNIV PRESS2023

Impact of Topography on Rural Cycling Patterns: Case Study of Bugesera District, Rwanda

Jérôme Chenal, Akuto Akpedze Konou, Baraka Jean-Claude Munyaka, Rim Mrani

Rural mobility in Africa is an under-researched issue. Rural communities have often suffered from reduced mobility that has hampered their access to essential services and facilities such as education, health care, food, and clean water. In many rural comm ...

2023

The mechanical origin of snow avalanche dynamics and flow regime transitions

Johan Alexandre Philippe Gaume, Betty Sovilla, Xingyue Li

Snow avalanches cause fatalities and economic damage. Key to their mitigation is the understanding of snow avalanche dynamics. This study investigates the dynamic behavior of snow avalanches, using the material point method (MPM) and an elastoplastic const ...

COPERNICUS GESELLSCHAFT MBH2020

Bottom slope influence on flow and bedload transfer through contractions

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt

In-stream open check dams are essential for flood protection at mountain rivers that are characterized by steep slopes (>1%) and sediment-laden flood discharges. These structures comprise an opening acting as a lateral or vertical flow contraction to force ...

2019

Antidunes on steep slopes: variability of wave geometry and migration celerity

Christophe Ancey, Ivan Pascal

As a result of interactions between streamflow andsediment, riverbeds are seldom smooth, but depending onhydraulic and sediment transport conditions, they exhibitbedforms, which grow and migrate over time (upstreamor downstream). Morphology migration may e ...

Heide Friedrich and Karin Bryan2019

Particle size-segregation in granular ows driven by a conveyor belt.

Christophe Ancey, Tomás Alfredo Trewhela Palacios, Kasper van der Vaart

Particle motion within the leading edge of bidisperse gravity-driven granular flows is affected by particle size segregation. Shear-induced segregation causes coarse particles to move towards the upper layers. Then, these are advected down to the tip regio ...

2018

Snow fracture in relation to slab avalanche release: critical state for the onset of crack propagation

Johan Alexandre Philippe Gaume, Nander Wever, Jürg Schweizer, Alec van Herwijnen

The failure of a weak snow layer buried below cohesive slab layers is a necessary, but insufficient, condition for the release of a dry-snow slab avalanche. The size of the crack in the weak layer must also exceed a critical length to propagate across a sl ...

Copernicus GmbH2017

The dam-break problem for eroding viscoplastic fluids.

Christophe Ancey, Belinda Margaret Bates

Natural gravity-driven flows can increase in volume by eroding the bed on which they descend. This process is called basal entrainment and is thought to play a key role in the bulk dynamics of geophysical flows. Although its study is difficult using field ...

Elsevier2017

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Slope

Using video detection of snow surface movements to estimate weak layer crack propagation speeds

Impact of Topography on Rural Cycling Patterns: Case Study of Bugesera District, Rwanda

The variability of antidune morphodynamics on steep slopes

The mechanical origin of snow avalanche dynamics and flow regime transitions

Bottom slope influence on flow and bedload transfer through contractions

Antidunes on steep slopes: variability of wave geometry and migration celerity

Particle size-segregation in granular ows driven by a conveyor belt.

Experimental study on bedload transport, fluctuations and coupling with bedforms in steep turbulent streams.

Snow fracture in relation to slab avalanche release: critical state for the onset of crack propagation

The dam-break problem for eroding viscoplastic fluids.

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The mechanical origin of snow avalanche dynamics and flow regime transitions

Experimental study on bedload transport, fluctuations and coupling with bedforms in steep turbulent streams.

Using video detection of snow surface movements to estimate weak layer crack propagation speeds

The dam-break problem for eroding viscoplastic fluids.

Particle size-segregation in granular ows driven by a conveyor belt.

Antidunes on steep slopes: variability of wave geometry and migration celerity

Bottom slope influence on flow and bedload transfer through contractions

The variability of antidune morphodynamics on steep slopes

Impact of Topography on Rural Cycling Patterns: Case Study of Bugesera District, Rwanda

Snow fracture in relation to slab avalanche release: critical state for the onset of crack propagation