Experiments of impulse waves generated by gravity-driven flows : Focus on tsunami generation by pyroclastic flows
Orateur : Alexis Bougouin – IUSTI, Marseille (prev. LMV, Clermont-Ferrand)
Abstract : During volcanic eruptions, pyroclastic flows may be generated, then propagate down a mountainside, and finally reach the sea or a lake triggering tsunamis, representing a major hazard for coastal communities. Using laboratory experiments of fluidized granular flows entering water, we are interested to the physical processes controlling the wave features by varying the flow conditions. In particular, we showed that grain-fluid interaction should be considered for improving the modelling of tsunami generation.
Date et lieu : vendredi 18 mars à 11h30, en salle 250 à l’IUSTI