BRGM (Bureau de Recherches Géologiques et Minières)

The BRGM (Bureau de Recherches Géologiques et Minières) is France’s national geological service. It studies the Earth to help protect the environment, manage natural resources like water and minerals, and reduce natural risks such as earthquakes or landslides. BRGM works on real-world problems using science and technology, making it an important place for students interested in geology, the environment, and sustainable development.

The Laboratory of Geology at the École Normale Supérieure (ENS) Paris is one of France’s oldest and most prestigious Earth science research institutions. Founded in the late 19th century, it has played a key role in advancing our understanding of geological processes. The lab combines fieldwork, laboratory experiments, and theoretical modeling to study the structure, dynamics, and evolution of the Earth. Research topics include tectonics, seismology, geochemistry, and the physics of earthquakes. With strong academic ties and a long tradition of scientific excellence, it offers a vibrant environment for students and researchers alike.

Homepage: https://www.brgm.fr

The process of earthquake generation is highly nonlinear, and the physical parameters governing this natural phenomenon are challenging to constrain. Nevertheless, natural seismicity shows systematic statistical patterns, such as scaling laws, spatial and temporal clustering, foreshock-mainshock-aftershock sequences, and sensitivity to small perturbations.

As part of the French research project ANR PREMs (PRedictability of Earthquakes and Mathematical Models), this PhD aims to investigate the physical mechanisms behind these observable features.

The core objective of the thesis is to explore how physics-based simulations can improve our understanding and forecasting of seismicity. On one side, recent laboratory experiments now offer high-quality microseismic catalogs under well-controlled conditions. On the other, advanced physical models incorporate elements such as rate- and state-dependent friction, multi-scale fault heterogeneity, spatial fault distributions, and varied stress loading scenarios.

The project will begin with simulations at the laboratory scale, focusing on the predictability of seismic events in controlled settings. In the later stages, the goal is to extend these models to the field scale, bridging the gap between lab observations and natural seismicity.

Homepage: https://aochihi.github.io/anr-prems/
https://aochihi.github.io/anr-prems/phd-opportunity-at-brgm-lgens.html

We start the selection process from the 1st August 2025 until the position is filled. The interviews by the supervisors are planned for the week of the 18th August 2025 (or later). The application is to send to Hideo Aochi (h.aochi@brgm.fr). The applications must include the following documents. 1) CV, 2) cover letter, 3) two names of reference, 4) transcript of grades (Bachelor’s + Master’s 1 & 2). The successful candidate will be then invited for the interviews with the doctoral school and the BRGM.