Simulation des \'ecoulements gravitaires avec les mod\`eles d'\'ecoulement en couche mince: \'etat de l'art et exemple d'application aux coul\'ees de d\'ebris de la Rivi\`ere du Pr\^echeur (Martinique, Petites Antilles)

Abstract

Quantifying the propagation of landslides is a key step for analyzing gravitational risks. In this context, thin-layer models have met a growing success over the past years to simulate the dynamics of gravitational flows, such as debris flows. They are easier to use and require less computing ressources than 3D models, and provide more detailed estimations of flow thicknesses and velocities than purely empirical methods. In this literature review, we present the main rheologies used to model homogeneous gravitational flows, and describe a practical case study with debris flow modeling in the Pr{\^e}cheur River (Martinique, Lesser Antilles). Then, we discuss possible developments for operational hazard and risk assessment with thin-layer models.