Abstract: Extreme rainfall events are the major driver of landslide occurrences in mountainous and steep terrain regions around the world. Subsurface hydrology has a dominant role on the initiation of rainfall-induced landslides, since changes in the soil water content affect significantly the soil shear strength. Rainfall infiltration produces an increase of soil water potential, which is followed by a rapid drop in apparent cohesion.
Tag Archive for landslides
An introductory presentation for my PhD research covering the hydrological modelling of shallow landslides, subsurface hydrology, unsaturated soil mechanics, Ground Penetration Radars and some experimental data from a field campaign that I conducted.
A distributed physically based model to predict timing and spatial distribution of rainfall-induced shallow landslides
Abstract: Shallow landslides induced by rainfall are among the most costly and deadly natural hazards, which mostly afflict mountainous and steep terrain regions. Crucial role in the initiation of these events is attributed to subsurface hydrology and how changes in the soil water regime can affect significantly the soil shear strength. Rainfall infiltration results in a decrease of matric suction, which is followed by a rapid drop in apparent cohesion. Read more
Abstract: Landslides of any type, and particularly soil slips, pose a great threat in mountainous and steep terrain environments. One of the major triggering mechanisms for slope failures in shallow soils is the build-up of soil pore water pressure resulting in a decrease of effective stress. However, infiltration may have other effects both before and after slope failure. Read more
The role of subsurface topography and its implications on the water regime in the Urseren Valley, Switzerland
Abstract: To improve the understanding and the modelling of soil water regimes in alpine areas it is essential to know not only the number and the properties of the soil layers, but also their spatial distribution. One common assumption used in many simulations in the literature is that that the soil layers and the bedrock are parallel to the surface, which sometimes diverges significantly from the reality. Read more