S06 - Large eruptions magma-chambers formation and evolution: implications on magmatic processes, eruption dynamics and environmental impact

Sandro de Vita*, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
Claudia D’Oriano, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
Ilenia Arienzo, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
Domenico Doronzo, Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli Osservatorio Vesuviano, Questo indirizzo email è protetto dagli spambots. È necessario abilitare JavaScript per vederlo.
*Corresponding

Reconstructing the structure, timing and modalities of growth and evolution of the magmatic feeding system/s associated with high-magnitude eruptions is one of the most challenging targets that the volcanological community is facing nowadays. These issues are of primary importance for understanding the evolution of volcanism in active volcanic areas, as magma accumulation represents a pre-requisite for the growing of large magma reservoirs and then for the occurrence of high-magnitude eruptions. This translates into specific eruption mechanisms and phenomena such as: structure-controlled eruptions, Plinian and ultra-Plinian eruptions, caldera collapse, pyroclastic density currents an ash fallout generation and dispersal, and caldera resurgence. Moreover, high-magnitude eruptions can have a dramatic impact on the environment and human settlements and life, in terms of direct geomorphological modifications and climate changes. Aim of this session is to bring together the most recent studies focused on volcanic stratigraphy, tephra correlation, eruption dynamics, geochemical characterization of the eruptive products, magma withdrawal, timescales of magma chamber (storage, mixing/mingling and refilling), and conduit (ascent) processes. We encourage the submission of interdisciplinary contributes on geological, tephrostratigraphical, sedimentological, volcanological, structural, petrological, geochronological and geophysical investigations, as well as numerical modelling of large eruptions, ash dispersion in the atmosphere and climatic impact assessment.