Magma Transport Dynamics - Benoit Taisne


Studying fundamental volcano‐magmatic processes is difficult because volcanic systems are complex non‐linear systems, which makes each volcano unique. Volcanic eruptions occur when magma reaches the surface. Magma migration from depth up through the brittle crust occurs by the propagation of hydraulic fractures or dykes. Dyke propagation involves complex physic processes such as viscous flow of magma, rock fracture, elastic deformation of the host rock, and potentially large changes of the physical properties of the magma (crystallization, degassing, solidification, etc).

This research involves the use of seismic data to track magma motion within the crust; analysing the seismicity generated by magma transport is one way to image this phenomenon. A physical model that quantitatively relates the flux of magma in the dyke to real-time geophysical data is lacking. Numerical and analogue models will therefore improve our understanding of the parameters that govern the intrusions of magma.

Some less traditional methods will also be implemented to unravel the volcano-magmatic processes, like muon tomography or the study of corals around volcanic systems. These innovative approaches will help us understand the processes at stake in the magma transport at depth and in the shallower parts of the volcanic edifice.

Latest Projects

Dikes are planar structures with complex dynamics of propagation

This project combines numerical simulations with analogue modelling to further knowledge how the movement of magma through the Earth's crust may or may not lead to a volcanic eruption. Existing 2-D models of dike propagation (taking into account...

Mayon's MUON telescope (c) Fabio Manta

This study sheds light on the structure (i.e. density distribution) and geometry of the volcanic conduit, which have so far remained elusive for volcanologists and hazard managers, and allows us to better understand Mayon's volcanic behaviour...

Taisne and his team use volcano morphology, observed in satellite remote sensing, coupled with eruption data taken from historical and geologic records, to infer eruption frequency at ~350 active or potentially active volcanoes in Southeast Asia...

One of the most active explosive volcanoes in the world, the Soufriere Hills Volcano (Montserrat, West Indies) has been active for more that 17 years and offers rare opportunities to increase our fundamental knowledge on explosive volcanoes.

With more that one eruption per year on average during the last 30 years, Piton de la Fournaise (La Reunion island, Indian Ocean) is one of the most active effusive volcanoes in the world. It is the perfect natural laboratory to imagine new...

Infrasound travels thousands of kilometres and can be detected using the appropriate instrumentation. Several natural sources generate infrasound, including the hundreds of volcanoes surrounding Singapore.