Modelling forms a vital part of all engineering design, yet many hydraulic engineers are not
fully aware of the assumptions they make. These assumptions can have important …

Large rock–ice avalanches have attracted attention from scientists for decades and some of
these events have caused high numbers of fatalities. A relation between rock slope …

Predicting potential deposition areas of future debris-flow events is important for engineering
hazard assessment in alpine regions. To this end, numerical simulation models are …

In order to describe the flow behaviour of debris flows often rheologic models are used. This
study introduces two novel facilities to determine rheologic parameters of different models …

A granular front emerges whenever the free-surface flow of a concentrated suspension
spontaneously alters its internal structure, exhibiting a higher concentration of particles close …

Data on the internal velocity distribution of flowing sediment–fluid mixtures such as debris
flows are rare, but necessary for model development and testing. A probe to measure the …

Rapid mass movements involving large proportions of ice and snow can travel significantly
further downslope than pure rock avalanches and may transform into debris-flows as the ice …

All around the world, people meet a challenge to find a balance between the risk of natural
hazards and the need for spatial developments. Densely populated hillside regions in …

During the downslope long-distance movement of debris avalanches, particles interact with
each other in various modes, by rolling, sliding and colliding with each other. During …

Pyroclastic flows are mixtures of gas and particles generated by gravitational collapse of
lava domes or fall-back of eruption columns during explosive eruptions. They are major …