The explosivity of a volcanic eruption reflects the processes which occur as magma ascends from the Earth's interior towards the surface. Investigating the processes and timescales that control the physical, chemical and rheological evolution of magma within volcanic reservoirs and conduits is essential to provide insight into eruptive style, and, consequently, into volcanic hazard assessment and mitigation. Magmatic processes, such as crystallisation, magma mixing and degassing, control magma differentiation and rheology, which in turn influence the remobilisation of crystal mushes, magma storage within the crust, the formation of eruptible magma, ascent dynamics, magma fragmentation and, ultimately, eruptive behaviour.
Analysis of the textural, chemical and isotopic characteristics of eruptive products can constrain pre- and syn-eruptive conditions and processes, in order to investigate the dynamics of magma storage, ascent and emplacement. Analytical and field observations, laboratory experiments, and numerical modelling are fundamental tools for investigating pre- and syn-eruptive processes and magma rheology, and for understanding the volcanic system and eruptive dynamics. This information can support petrological monitoring approaches, where geochemical and textural analysis of erupted products can provide real-time data over evolving eruptive episodes and important insight for mitigating the risks associated with volcanic activity.
In this session, we welcome petrological, experimental, geophysical and volcanological studies that investigate pre- and syn-eruptive conditions, magma rheology and the dynamics of magmatic processes within magma reservoirs, volcanic conduits and during emplacement through analytical, experimental, and numerical-based approaches. Contributions that investigate the hazards associated with volcanic activity, including petrological monitoring approaches, and interdisciplinary works that consider the close and complex interplay between magmatic processes, conduit dynamics and eruptive behaviour are encouraged.