We are pleased to welcome Jonny Macha, Fin Carroll, Tim Raffety and Lauren Hart to speak at a HotStuff seminar on: Investigating surface deformation in volcanic regions using analogue models.

Abstract:

Surface deformation in volcanic regions is often a precursor to volcanic eruptions and can be tracked using satellite imagery. A greater understanding of surface deformation and its link to subsurface behaviour is needed to effectively utilise this satellite data. To tackle this problem, the project set out to design, test and evaluate analogue models of magma chamber plumbing systems. In particular, focussing on representing Laguna del Maule located in Chile. Through the use of effective state of the art surface tracking techniques, it was possible to analyse the model dynamics and production of subsurface structures with relation to the surface displacement data. This allowed for conclusions to be made on how magma chamber shapes and failure effect the rates, patterns and movement of surface deformation. Furthermore, modelling was carried out in multiple rock analogues with each rheology providing contrasting results. This investigation was able to make conclusions that directly impact how satellite tracking data should be interpreted and created experimental methodologies for exciting future work.