Simulation of block-and-ash flows and ash-cloud surges of the 2010 eruption of Merapi volcano with a two-layer model

Abstract : A new depth-averaged model has been developed for the simulation of both concentrated and dilute pyroclastic currents and their interactions. The capability of the model to reproduce a real event is tested for the first time with two well-studied eruptive phases of the 2010 eruption of Merapi volcano (Indonesia). We show that the model is able to reproduce quite accurately the dynamics of the currents and the characteristics of the deposits: thickness, extent, volume, and trajectory. The model needs to be tested on other well-studied eruptions and the equations could be refined, but this new approach is a promising tool for the understanding of pyroclastic currents and for a better prediction of volcanic hazards.
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Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2017, 122 (6), pp.4277 - 4292. 〈10.1002/2017JB013981〉
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https://hal-clermont-univ.archives-ouvertes.fr/hal-01624998
Contributeur : Sylvaine Jouhannel <>
Soumis le : vendredi 27 octobre 2017 - 09:02:50
Dernière modification le : jeudi 22 mars 2018 - 01:23:14

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Karim Kelfoun, Valentin Gueugneau, Jean-Christophe Komorowski, Nurnaning Aisyah, Noer Cholik, et al.. Simulation of block-and-ash flows and ash-cloud surges of the 2010 eruption of Merapi volcano with a two-layer model. Journal of Geophysical Research : Solid Earth, American Geophysical Union, 2017, 122 (6), pp.4277 - 4292. 〈10.1002/2017JB013981〉. 〈hal-01624998〉

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