Eliot Chatton

Ingénieur de recherche

Equipe DIMENV
Organisation:
Géosciences Rennes
Adresse:

Bât.15 campus Beaulieu

Université de Rennes 1

Localité:

RENNES

France

Adresse courriel : eliot [dot] chatton [at] univ-rennes1 [dot] fr

Téléphone : +33 223233725

Numéro de bureau : Bât.15, P310

Adresse

Equipe DIMENV@risce
OSUR
Bât.15, Pièce 310, campus Beaulieu
Université de Rennes 1
35042 RENNES cedex

Research Activities

As a Critical Zone scientist, my research activities are directed towards the thin layer sustaining life at the surface of our planet: the Critical Zone. Committed to this integrative concept, I am particularly interested in natural waters which consist in the leading thread controlling the exchanges of energy and matter in the Critical Zone therefore connecting its different compartments (Atmosphere, Biosphere, Hydrosphere, Pedosphere and Geosphere). In view of the diversity and spatiotemporal variability of water and solute transfers in the Critical Zone, capturing their dynamics is a major stake that must be addressed in order not to compromise our ability to face future challenges currently arising from global change.

To comprehend the dynamics of water and solute transfers in the Critical Zone, I use the gases dissolved in natural waters since variations in the composition of these widely distributed compounds can be used to determine the origin, the pathways and the timescales of environmental processes. Due to their versatility in terms of nature (stable or radioactive, inert or reactive) and origin (natural or anthropogenic), dissolved gases probably represent the most valuable family of environmental tracers which properties allow me to contribute to the investigation of different research teams on various physical, chemical, biological and geological processes.

My research work consists in providing new tools for the observation, experimentation and modelling of the hydrobiogeochemical dynamics of aquatic environments using dissolved gases. So far, my commitment in the public research enabled me to achieve:

  • The development of an innovative technique for the field high-frequency measurement of natural and anthropogenic dissolved gases (N2, O2, CO2, CH4, N2O, H2, H2S, He, Ne, Ar, Kr, Xe, VOCs, BTEX) using a MIMS (Membrane Inlet Mass Spectrometer).
  • The design and implementation of original experimentations (groundwater and river tracer tests, high-frequency lake mapping, well-logging, in situ long-term monitoring) using naturally occurring or injected “smart” (inert, diffusive, reactive …) dissolved gas tracers.
  • The acquisition, processing and analysis of dissolved gas datasets using inverse modelling for the determination of the origin of water masses, their residence time, the potential exchanges between different Critical Zone compartments, the solute transport properties and biogeochemical reactions in aquatic environments, and, infer the recorded dynamics of past climates.
  • The diffusion of research findings to the scientific (publications in international journals, communications in international conferences) and non-scientific (dissemination events) communities.
  • A contribution in the formation of students (teaching to bachelor and master students, co-supervision of interns).
  • The implementation of research findings in an analytical and consulting platform (technological transfer) including the communication to the public and private partners (running a stand at the regional water management exhibition).

This ongoing work already contributes to a more thorough understanding of greenhouse gas fluxes, water resources vulnerability, contaminant transport in watersheds, groundwater management sustainability as well as ecosystem services and resilience.

Held Positions

since 2020 : Research Engineer at Observatoire des Sciences de l’Univers de Rennes, OSUR (Plateforme Condate Eau – UMS 3343, CNRS)

2019  : Research Engineer at Observatoire Océanologique de Banyuls, OOB (LOMIC – UMR 7621, Sorbonne Université)

2018  : Research Engineer at Observatoire des Sciences de l’Univers de Rennes, OSUR (Plateforme Condate Eau – UMS 3343, Université de Rennes)

2014 – 2017 : PhD candidate in Earth Sciences at Université de Rennes (Géosciences Rennes – UMR 6118)

Publications

Chatton E., Labasque T., Guillou A., Floury P., Aquilina L., Vergnaud V.; Innovative instrument for the field continuous monitoring of dissolved gases in environmental studies; I2M (2020)

Vautier C., Abhervé R., Chatton E., Labasque T., de Dreuzy J.R.; A new method to quantify air-water gas exchanges in streams based on slug injection and semi-continuous measurement; Limnology and Oceanography: Methods (2020)

Bochet O., Bethencourt L., Dufresne A., Farasin J., Pedrot M., Labasque T., Chatton E., Lavenant N., Petton C., Abbott B.W., Aquilina L., Le Borgne T.; Iron-oxidizer hotspots formed by intermittent oxic–anoxic fluid mixing in fractured rocks; Nature Geoscience (2020) https://doi.org/10.1038/s41561-019-0509-1

Vautier C., Abhervé R., Labasque T., Laverman A., Guillou A., Chatton E., Dupont P., Aquilina L., de Dreuzy J.R.; Mapping gas exchanges in headwater streams with membrane inlet mass spectrometry; Journal of Hydrology 581 (2020) https://doi.org/10.1016/j.jhydrol.2019.124398

de La Bernardie J., Bour O., Guihéneuf N., Chatton E., Longuevergne L., Le Borgne T.; Dipole and convergent single-well thermal tracer tests for characterizing the effect of flow configuration on thermal recovery; Geosciences (2019) https://doi.org/10.3390/geosciences9100440

Cary L., Petelet Giraud E., Chatton E., Bertrand G., Aquilina L., Labasque.; La qualité et l'âge des eaux souterraines dans la région métropolitaine de Recife, chapter in : Cary P., Giglio A., Affronter le manque d'eau dans une métropole. Le cas de Recife – Brésil ; Septentrion. Presses Universitaires (2018) 51-66

de La Bernardie J., Bour O., Le Borgne T., Guihéneuf N., Chatton E., Labasque T., Le Lay H., Gérard M.F.; Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests; Water Resources Research 54 (2018) 10053–10075 https://doi.org/10.1029/2018WR023199

de Montety V., Aquilina L., Labasque T., Chatton E., Fovet O., Ruiz L., Fourré E., de Dreuzy J.R.; Recharge processes and vertical transfer investigated through long-term monitoring of dissolved gases in shallow groundwater; Journal of Hydrology 560 (2018) 275–288 https://doi.org/10.1016/j.jhydrol.2018.02.077

Petelet-Giraud E., Cary L., Cary P., Bertrand G., Giglio-Jacquemot A., Hirata R., Aquilina L., Alves L. M., Martins V., Melo A. M., Montenegro S., Chatton E., Franzen M., Aurouet A., the Team; Multi-layered water resources, management, and uses under the impacts of Global Changes in a Southern Coastal Metropolis: when will it be already too late? Crossed analysis in Recife, NE Brazil; Science of the Total Environment 618 (2018) 645-657 https://doi.org/10.1016/j.scitotenv.2017.07.228

Bertrand G., Hirata R., Auler A., Cruz F., Cary L., Petelet-Giraud E., Chatton E., Aquilina L., Moquet J-S., Bustamante M.G., Millo C., Martins V., Montenegro S., Celle-Jeanton H.; Groundwater isotopic data as potential proxy for Holocene paleohydroclimatic and paleoecological models in NE Brazil; Palaeogeography, Palaeoclimatology, Palaeoecology 469 (2017) 92–103 http://dx.doi.org/10.1016/j.palaeo.2017.01.004

Chatton E., Labasque T., de La Bernardie J., Guihéneuf N., Bour O., Aquilina L.; Field Continuous Measurement of Dissolved Gases with a CF-MIMS: Applications to the Physics and Biogeochemistry of Groundwater Flow; Environmental Science and Technology 51 (2017) 846−854 https://pubs.acs.org/doi/abs/10.1021/acs.est.6b03706

Bertrand G., Hirata R., Pauwels H., Cary L., Petelet-Giraud E., Chatton E., Aquilina L., Labasque T., Martins V., Montenegro S., Batista J., Aurouet A., Santos J., Bertolo R., Picot G., Franzen M., Hochreutener R., Braibant G.; Groundwater contamination in coastal urban areas: Anthropogenic pressure and natural attenuation processes. Example of Recife (PE State, NE Brazil); Journal of Contaminant Hydrology 192 (2016) 165–180 http://dx.doi.org/10.1016/j.jconhyd.2016.07.008

Chatton E., Aquilina L., Pételet-Giraud E., Cary L., Bertrand G., Labasque T., Hirata R., Martins V., Montenegro S., Vergnaud V., Aurouet A., Kloppmann W., Pauwels H.; Glacial recharge, salinisation and anthropogenic contamination in the coastal aquifers of Recife (Brazil); Science of the Total Environment 569–570 (2016) 1114–1125 http://dx.doi.org/10.1016/j.scitotenv.2016.06.180

Aquilina L., Vergnaud-Ayraud V., Armandine Les Landes A., Pauwels H., Davy P., Pételet-Giraud E., Labasque T., Roques C., Chatton E., Bour O., Ben Maamar S., Dufresne A., Khaska M., Le Gal La Salle C., Barbecot F.; Impact of climate changes during the last 5 million years on groundwater in basement aquifers; Scientific Reports 5 (2015) 14132 https://doi.org/10.1038/srep14132

Cary L., Petelet-Giraud E., Bertrand G., Kloppmann W., Aquilina L., Martins V., Hirata R., Montenegro S., Pauwels H., Chatton E., Franzen M., Aurouet A., the Team; Origins and processes of groundwater salinization in the urban coastal aquifers of Recife (Pernambuco, Brazil): A multi-isotope approach; Science of the Total Environment 530–531 (2015) 411–429 http://dx.doi.org/10.1016/j.scitotenv.2015.05.015

Isabelle Dubigeon
jeu 11/06/2020 - 17:47