FlowTrans Principal Investigator
Professor of Earth Sciences, Universite Joseph Fourier, France
I co-supervise 2 FlowTrans ITN Early Stage Researchers with my colleagues at the Universite Joseph Fourier in Grenoble. We will develop new experiments on the effects of earthquakes on rocks in fault zones, that will be compared with field data. We are interested in processes that couple seismic deformations (earthquakes) to aseismic deformations (creep).
One of the chosen areas for our field research will be the North Anatolian Fault in Turkey – one of the most active continental faults in the world.
My main research area is petrophysics, related to fluid rock interactions in porous and fractured media. I develop studies in fault zones and geological reservoirs, using laboratory experiments and micro numerical models. The results are then interpreted with observations provided from field case studies.
Physics and chemistry of deformation processes in Earth’s upper crust: In this research, we are exploring the application of the dynamics of active faults during the seismic cycle. It involves experimental development of analogue experiments (creep and friction), 3D in-situ imaging (X-ray synchrotron tomography) of rock samples undergoing deformation and field work to measure the roughness of exhumed active fault planes using high-resolution laser scanners (LiDAR). Through this research,we aim to understand why, on the same fault, the tectonic loading can induce either earthquakes, or slow aseismic creep motions. This research may have applications for seismic hazard assessment.
Fluid rock interactions in geological reservoirs: In this research we are investigating long term carbon dioxide geological sequestration and the possibility of injecting large amounts of carbon dioxide into underground reservoirs, to decrease the amount of acid gas released in the atmosphere. The technical challenge in this research is understanding how the carbon dioxide acidifies the pore water in the reservoir and induce slow creep deformation or circulate along faults and fractures. Other applications in geological reservoirs concern shale gas and understanding how micro-fractures may develop during fluid expulsion.