SCIENTIFIC PROGRAM

II. Using geophysics and geochemistry to probe magmatism and eruption processes  

II.2 Basaltic eruption styles and transitions in intensity: from driving processes to
impacts

Conveners:
Elisabetta Del Bello, INGV Rome, Italy; elisabetta.delbello@ingv.it
Nolwenn Le Gall, University of Manchester, UK; nolwenn.legall@manchester.ac.uk
Antonio Capponi, University of Durham, UK; a.capponi@lancaster.ac.uk
Damien Gaudin, LMU Munich, Germany; damien.gaudin@min.uni-muenchen.de

Basaltic volcanism is normally associated with quite mild activity, producing frequent effusive eruptions. However, this benign nature can swiftly transform into much more violent and intense explosive episodes, for example from mild Strombolian activity to VEI 2-3 or greater.
 
This session will focus on the driving processes controlling basaltic eruptions and their rapid transitions, such as gas exsolution, crystallization, permeable gas flow, slug flow, rheological evolution and fragmentation, and the role of disequilibrium processes, which are amplified during rapid ascent of basaltic magmas during eruptions.

Understanding these driving processes is crucial to: (i) investigating observed eruptive variations, (ii) improving conduit flow models so that they are capable of resolving more realistic fluid dynamics processes, and (iii) assessing basaltic eruption hazards and their societal and climate impacts.

We encourage submissions from scientists using diverse, and ideally integrated, datasets and methods, including seismology, infrasound, deformation, video imaging, gas geochemistry, petrology, experimental and numerical modelling, etc. to better interpret basaltic eruptive processes and the consequent hazards and societal impacts. Our intent is to enhance dialog between disciplines, heading towards an integrated view of basaltic volcanism from source to impact.