Inhaltsbereich
1.2 Physics of volcanic processes
The physical processes acting during volcanic crisis and eruptions are studied by means of field- and satellite-based techniques, as well as experimental and theoretical modelling. Activity changes at volcanoes are analyzed geodetically and seismically as a function of time, and by using computer simulations an indirect view into the volcano and its magma physics is obtained. The internal structure and mechanical heterogeneity of volcano edifices, and the subsurface below down to the magma sources are investigated or estimated and taken into account when analyzing other detected signals. Through these studies we attempt to investigate the state of stress within volcanoes and the interaction between volcanic activity and their environment, also benefiting from related disciplines. A strong synergy can be expected between the studies of quasi-static and dynamic triggering of seismicity on the one hand, and investigations of volcano-earthquake interactions on the other. In both cases, transient and dynamically triggered reservoir pressurizations through fluid migration and gas bubble formation may play an important role. Research that focuses on the “physics of volcanic processes” is including the triggering mechanisms of volcanic and geothermal activity and is specifically considering pressure induced magma migration and -ascent. These phenomena are modelled on the basis of InSAR, GPS or seismic activity data. New insight is expected into the possible modes of pressure built-up during the preparation phase of a volcanic eruption.
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Our research activities:
- InSar
- PBO - Plate Boundary Observatories
- Volcano-earthquake interaction
- The development of volcano stress fields
- Small island states (Boiling lake)
- MERAMEX
- EXUPERY – managing volcano unrest
- Experimental simulation of volcanic processes