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PhD fellowship on Hyporheic Zone Mixing at University of Rennes


17 Apr 2018

PhD fellowship on Hyporheic zone mixing at the University of Rennes in France.

PhD fellowship on Hyporheic zone mixing, University of Rennes, France, Department of Geosciences

Closing date: 30 April, 2018

Project Description: The project focuses on the dynamics of the hyporheic zone (HZ) - the sedimentary interface between a river and the subsurface – to uncover its role in biogeochemical cycles (nitrogen, carbon among others) as well as contaminants release in rivers (arsenic, emerging contaminants …). The PhD student will explore the effect of hydro-sedimentary transient forcing, such as flood, sediment transport and water table fluctuations in driving reactive hot spots and hot moments of HZ processes. She/he will combine innovative experimental techniques – allowing for a 3D spatio-temporal measure of fluxes and transfers across the interface --, with recent theoretical breakthroughs on the physics of mixing in porous media that constitute HZ sediments. Applications of expected results are broad: from modelling critical zone biogeochemical processes to managing HZs regarding water quality, agriculture practices, climate change and dam/flood management.

Detailed description:

Eligibility: To be eligible, the candidate should be non-French and have not resided in France for more than three months. She/he should have a strong educational background in fluid/soil mechanics, hydrology or environmental sciences. She/he should show excellent skills in physical methods applied to earth science systems and should display sound practical sense regarding experimental and laboratory work.

Funding: The project will be co-funded by European Research Council (ERC) project ReactiveFronts (on-going and the program “Make our planet great again” launched in 2017 by Emmanuel Macron ( funding decision based on PhD applicants).

Location: The PhD student will be based at the Geoscience Rennes lab, a leading scientific institution in the field of hydrogeology. He will thus benefit from an outstanding interdisciplinary environment, state-of-the-art experimental facilities and numerous international collaborations. He will join the recently formed team of PhD students and postdocs of the ERC project ReactiveFronts (

Supervisors: Joris Heyman, postdoctoral fellow, University of Rennes, France (, Tanguy Le Borgne, professor, University of Rennes, France (

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