Modelling pyroclastic density currents from a subplinian eruption at La Soufriere de Guadeloupe (West Indies, France).

ABSTRACT: We have used a three-dimensional, non-equilibrium multiphase flow numerical model to simulate subplinian eruption scenarios at La Soufrière de Guadeloupe (Lesser Antilles, France). Initial and boundary conditions for computer simulations were set on the basis of independent estimates of eruption source parameters (i.e. mass eruption rate, volatile content, temperature, grain size distribution) from a field reconstruction of the 1530 CE subplinian eruption. This event is here taken as a reference scenario for hazard assessment at La Soufrière de Guadeloupe. A parametric study on eruption source parameters allowed us to quantify their influence on the simulated dynamics and, in particular, the increase of the percentage of column collapse and pyroclastic density current (PDC) intensity, at c

SUBMITTER: Esposti Ongaro T 

PROVIDER: S-EPMC7662035 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature