Statistics – Computation
Scientific paper
Feb 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3404309n&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 4, CiteID L04309
Statistics
Computation
13
Computational Geophysics: Modeling (4255), Computational Geophysics: Numerical Solutions (4255), Volcanology: Eruption Mechanisms And Flow Emplacement, Volcanology: Explosive Volcanism, Volcanology: Volcanic Hazards And Risks
Scientific paper
We applied a new simulation model, based on multiphase transport laws, to describe the 4D (3D spatial coordinates plus time) dynamics of explosive eruptions. Numerical experiments, carried out on a parallel supercomputer, describe the collapse of the volcanic eruption column and the propagation of pyroclastic density currents (PDCs), for selected medium scale (sub-Plinian) eruptive scenarios at Vesuvius, Italy. Simulations provide crucial insights into the effects of the generation mechanism of the flows - partial collapse vs boiling-over - on their evolution and hazard potential, the unstable dynamics of the fountain, and the influence of Mount Somma on the propagation of PDCs into the circum-Vesuvian area, one of the world's most hazardous volcanic settings. Results also show that it is possible to characterize the volcanic column behavior in terms of percentage of the mass of pyroclasts collapsed to the ground and how this parameter strongly influences the dynamics and hazard of the associated PDCs.
Baxter Peter J.
Cavazzoni Carlo
De'Michieli Vitturi Mattia
Erbacci Giovanni
Esposti Ongaro Tomaso
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