Numerical models of volcanic flows for an estimation and delimitation of volcanic hazards, the case of Reventador volcano (Ecuador)

Abstract:

Numerical models of volcanic flows for an estimation and delimitation of volcanic hazards, the case of El Reventador volcano (Ecuador) Lava flows are the most representative volcanic products of effusive eruptions and are formed when the magma is extruded and flows on the surface. When lava flows reach the surface they lose heat and cool. Cooling affects directly the rheology of the lava up to a point where it cannot flow anymore. Rheological parameters that control the dynamics of lava flows are the viscosity and the yield strength which in turn depends on the chemical composition, crystallinity and bubble content. There exist numerous models for the rheology estimation, mostly developed for basaltic lava flows and few for andesitic ones.

Año de publicación:

2017

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Fuente:

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