Postdoc : Field exploration of Helium (He) and Hydrogen (H2) – geophysics and geochemistry

Description du poste

The recent development of new exploration projects focusing on natural hydrogen (H2) and helium (He) requires the implementation of specific strategies based on robust methodologies and pathfinders. Therefore, it is important to develop exploration guides that are not only focused on surface gas monitoring, but that also consider both the local environmental and geological settings, integrating the entire H2/He systems from source(s) to trap or leakage into the atmosphere.

Our multidisciplinary team at ISTerre laboratory is committed to address every facet of the H2 and He systems (sources, migration, sinks and seeps) in order to define specific exploration strategies. We develop a holistic approach encompassing water-rock hydrothermal experiments, reactive transport modelling, geodynamic and geophysics. All this knowledge is then transposed into the field where we deploy a state of the art mobile laboratory specially designed to explore H2 and He migration.

The hired postdoctoral researcher will develop innovative methodologies to document He/H2 migration in the field combining geology, geophysics and geochemistry. Several targets in France with proven presence of He and/or H2 have been already identified by our team. The first task, will consist in defining a couple of sites gathering optimal conditions to carry out a geophysical survey (accessibility, low background noises), and ideal
lithological/structural configurations to assess fluid migration in both the basement and the adjacent/overlying basin. Then, a geophysical (EM, MT eventually passive seismic), geochemical and geological field survey with be carried out. Depending on her/his background, the hired researcher is expected to manage at least one of these tasks and undertake collaborations when necessary. The objective will be to track He/H2 migration paths and to reveal eventual geological/structural/topographic control. The obtained results will be co-processed with other sets of data pertaining to (bio)geochemistry and geodynamic.

Profil

The applicant should hold a PhD in one of the following fields : geophysics, geochemistry (fluid-rock
interactions, isotopes geochemistry, noble gases), or geology (basin modeling, geodynamic, rock dating,
mineral/energy resources). The candidate is expected to be proficient in English, and to enjoy teamwork.

Pour postuler : send your CV, motivation letter, and letter of reference to 1) Laurent Truche (Pr, Univ. Grenoble Alpes, ISTerre), laurent.truche univ-grenoble-alpes.fr and 2) Frederic-Victor Donzé (Pr, Univ. Grenoble Alpes, ISTerre), frederic.donze univ-grenoble-alpes.fr