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Comparison of Two Advection-Diffusion Methods for Tephra Transport in Volcanic Eruptions

Tsunematsu, Kae ; Chopard, Bastien ; Falcone, Jean-Luc ; Bonadonna, Costanza

In: Communications in Computational Physics, 2011, vol. 9, no. 5, p. 1323-1334

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    Titre
    • Comparison of Two Advection-Diffusion Methods for Tephra Transport in Volcanic Eruptions
    Auteur
    • Tsunematsu, Kae. Department of Mineralogy, University of Geneva, 13 Rue des Maraichers, 1205 Geneve, Switzerland
    • Chopard, Bastien. Department of Computer Science, University of Geneva, 7 Route de Drize, 1227 Carouge, Switzerland
    • Falcone, Jean-Luc. Department of Computer Science, University of Geneva, 7 Route de Drize, 1227 Carouge, Switzerland
    • Bonadonna, Costanza. Department of Mineralogy, University of Geneva, 13 Rue des Maraichers, 1205 Geneve, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Communications in Computational Physics, 2011, vol. 9, no. 5, p. 1323-1334. Cambridge University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:293827
    Summary
    In order to model the dispersal of volcanic particles in the atmosphere and their deposition on the ground, one has to simulate an advection-diffusion-sedimentation process on a large spatial area. Here we compare a Lattice Boltzmann and a Cellular Automata approach. Our results show that for high Peclet regimes, the cellular automata model produce results that are as accurate as the lattice Boltzmann model and is computationally more effective