Volcano Risk Lunch - The dynamics of co-ignimbrite plumes
Details below, Sam's talk will follow the usual VRL format where Sam will present some of her work for about 20 minutes and we follow up with half an hour or so of discussion surrounding the issues raised, e.g. robustness/utility of data collection, modelling.. All welcome!
Susanna and Henry
The dynamics of co-ignimbrite plumes
Co-ignimbrite volcanic plumes form as ash is lofted from the top of pyroclastic density currents of hot gas and ash, and dispersed through the atmosphere at high altitudes (up to 35 km). Associated deposits are the most widespread in the geologic record and affect larger areas than those from primary plumes. These plumes represent the upper limit of environmental hazard associated with volcanic ash fall, but yet very little is known about their production and dispersion. Data from the Campanian Ignimbrite eruption is used to characterise co-ignimbrite deposits and identify key areas where further research will be focused.