PhD position : Sedimentology in estuaries
The PhD will be done in the laboratory UMR CNRS 6143 M2C (Coastal and Continental Morphodynamics), Université de Rouen Normandie, France. http://m2c.cnrs.fr
The laboratory is depending of 3 institutions : CNRS (Centre National de la Recherche Scientifique), University of Rouen Normandie and University of Caen Normandie members of the consortium Normandie Université (close to 70000 students)
The PhD will be registred at the Doctoral School EDnBISE ( Ecole Doctorale normande de Biologie Integrative Sante Environnement) member of the consortium Normandie Université
PhD Subject: Suspended particulate matter dynamics in estuarine Turbidity Maximum Zone
Duration: 3 years
Laboratoire: UMR CNRS 6143 M2C (Coastal and Continental Morphodynamics), Université de Rouen Normandie, France. http://m2c.cnrs.fr
The settling velocity of cohesive particles is a key process for understanding the sedimentary dynamics in the estuary, areas subject to very strong gradients of salinity, concentration of suspended matter and turbulence. However, these settling velocities are mainly predicted empirically and therefore remain parameterized in hydro-sedimentary models with great uncertainty, in particular when the concentrations are high (> 1g.l-1 in particular in the Turbidity Maximum Zone). Our objective is to determine the impact of the characteristics of the particles (i.e. mineralogenic and/or organic composition, size) on the settling velocities in free regime, in flocculation regime and in hindered regime. The recent development of new approaches, either from experimental devices (eg SCAF developed by IRD, Wendling et al., 2015) or by innovations in in-situ measurement (eg dual frequency ADCP, Szupiany et al. , 2019), should make it possible to better understand the parameters controlling the settling of particle fall in an estuarine environment.
This work will be carried out by in-situ studies in the estuaries of the Loire, the Gironde and the Seine and by experimental studies in the laboratory within specifically developed systems. The support will be done through different CNRS/INSU and CPIER projects.
The candidate will hold a master’s degree in sedimentology or physics. It will be appreciated if he/she has knowledge of (i) suspended matter; (ii) hydrodynamic mechanisms in estuarine fields and (iii) fluid mechanics. The candidate should be familiar with a programming language (e.g. Matlab) and have knowledge of image processing. Hydrodynamic and / or sediment measurement experiments in the field would be appreciated.
Process of selection: one candidate will be preselected before June 8th, 2020 to be presented to the contest of the nBISE Doctoral School at the end of June / beginning of July 2020.
The Deadline for application is the June 1st, 2020.
If you are interested send before the June 1st 2020 an email including :
1) CV, 2) Cover letter, 3) marks of Master and Ranking (if available), 4) Reference of 2 referees.
Dr DELOFFRE Julien (supervisor) email@example.com and Pr LAFITE Robert (co-supervisor) firstname.lastname@example.org