Presentations

Hydrological Modelling of Shallow 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.

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Parallel Computing with CUDA: Perspectives for more efficient hydrological modeling

A presentation that introduces the basic concepts of parallel computing with CUDA targeted to hydrological modelling applications, including results from the acceleration of a subsurface flow algorithm.

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A parallel computational framework for the simulation of variably saturated flow based on the Cellular Automata concept using CUDA architecture

Abstract: A simple and efficient parallel computational framework is presented for the simulation of variably saturated flow in porous media. In this modeling approach the Cellular Automata (CA) concept is implemented. The computational domain is thus discretized with a regular grid and simple rules govern the evolution of the physical phenomena. The inherent CA concept simplicity and its natural parallelism make the parallel implementation of algorithms very efficient, especially for the simulation of large scale phenomena. Read more

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

Hydrological modeling of slope stability

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