Sébastien Chevrot

Sébastien Chevrot is a Researcher at the Institut de Recherche en Astrophysique et Planétologie (IRAP), Université Paul Sabatier, Toulouse, France. His work focuses on geophysical tomography to study lithospheric structures in orogenic zones like the Pyrenees and Massif Central.

• Key Research Areas: Crustal and mantle imaging, lithospheric segmentation, seismic wave propagation, and tectonic inversion of continental rifts.

The 2014 tomographic study co-authored by Chevrot utilized data from the PYROPE and IBERARRAY experiments to resolve deep crustal and mantle structures. This work challenged subduction models for the Pyrenees and highlighted the role of reactivated Hercynian faults.

Crustal corrections were computed using receiver functions and seismic profiles, improving resolution of lithospheric heterogeneities. The study demonstrated that uncorrected crustal anomalies can vertically smear tomographic images, emphasizing the importance of integrating detailed crustal models in regional seismic studies.