Research fields

Volcano deformation Ground displacements associated with space-based (InSAR) and ground truth (GPS) monitoring systems. A new ground based InSAR system is currently in the test phase. We develop new tools to obtain and analysis precise time-series, especially in order to improve data availability and volcano observation in tropical areas difficult to access.

Earthquake deformation. Geodetic measurements of earthquakes through space-based and ground truth systems may help to improve physical understanding of the processes leading to and associated with tectonic and volcanotectonic earthquakes. 

Volcano and earthquake modelling. Through analytical and numerical models we investigate near-surface, endogeneous and deep seated processes occurring within volcanic and non-volcanic regions. Using inversion modelling of deformation data we obtain detailed information about the location and volume change of magmatic reservoirs and constrain the complex shape of dikes, sills and chambers. Using boundary element and finite element numerical modelling we investigate effects of material heterogeneities, non-linear rheologies and more complex geometries. Analog experiments help to see and understand processes, for instance at collapse calderas.

Volcano hazard and early warning. Our expertise is valuable for evaluation of volcano hazard related to deformation, intrusion and eruption, and early warning systems. We invest in deformation time series analysis from space and on the ground in order to detect changes significant for accurrate evaluation of activity changes. As an example we estimate the locations of future eruptions and the influence of volcano products on earthquake damage distributions.