Eliot Chatton
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Projected Climate Change Impacts on Groundwater–Surface Water Connectivity in a Compartmentalized Mountain Headwater Bedrock Aquifer Open
How mountain headwaters and their groundwater‐dependent ecosystems will respond to future climate change remains largely unknown. These challenges stem from the difficulty of gathering relevant hydrological observations and implementing mo…
What a peaty contribution to global warming! An interdisciplinary study of atmospheric and hydrologic carbon fluxes in a temperate peatland in the Jura Mountains, eastern France Open
Peatlands, though covering only 3 % of the global land surface, play an active role in the Critical Zone (CZ) by mediating substantial water and carbon exchanges with adjacent aquifers, surface waters, and the atmosphere. These ecosystems …
Projected climate change impacts on groundwater-dependent ecosystems in a mountain headwater with compartmentalized bedrock Open
International audience
Impact of headwater streams on N2O emissions from agricultural catchments Open
Mineral and organic fertilization is estimated to be responsible for 70% of N2O emissions worldwide, a greenhouse gas which is approximately 270 times more potent than CO2. N2O emissions occur during biogeochemical processes of the nitroge…
Bubble size distributions in mountain streams Open
Mountain streams are hot spots for the exchange of gases such as oxygen or carbon dioxide with the atmosphere. Air-water gas exchange is accelerated by air bubbles entrained in turbulent flow and depends on bubble concentration and size. Y…
Using natural gas content of groundwater to improve the understanding of complex thermo-mineral spring systems Open
International audience
Hydrological and Geological Controls for the Depth Distribution of Dissolved Oxygen and Iron in Silicate Catchments Open
Dissolved Oxygen (DO) plays a key role in reactive processes and microbial dynamics in the critical zone. Recent observations showed that fractures can provide rapid pathways for oxygen penetration in aquifers, triggering unexpected biogeo…
Architecture of seepage zones combined with their residence time to constrain hydrogeological models Open
Hydrological predictions for ungauged basins at catchment and regional scales are still challenged by the lack of available data. Under the assumption that the perennial stream network is mostly fed by groundwaters, its spatial extent is c…
Hydrological and geological controls for the joint evolution of dissolved oxygen and iron in crystalline rocks Open
Dissolved Oxygen (DO) plays a key role in reactive processes and microbial dynamics in the critical zone. While the general view is that oxygen is rapidly depleted in soils and that deeper compartments are anoxic, recent observations showe…
Spring discharge, transit times and intermittency in an alpine catchment: how geomorphology shapes the spatio-temporal dynamics? Open
We investigate spatial and temporal behaviors of spring discharge, transit times and intermittency of a network of springs located in an alpine catchment (Natural conservation area of the Massif of Saint-Barthlemy, Pyrenees, France). Field…
Innovative Instrument for the Field Continuous Monitoring of Dissolved Gases in Environmental Studies Open
Dissolved gases are particularly relevant tools for the investigation of environmental processes. Indeed, their solubility being a function of the variables of physical state of the medium (temperature, pressure, salinity), the dissolved n…
 Evaluation of dissolved 4He as a groundwater age tracer in shallow fractured aquifers  Open
Anthropogenic gas tracers such as CFC, SF6, 85Kr, 36Cl or 3H have been widely used to study shallow groundwaters with residence time of less than 70yr. For longer groundwater residence time (100- x1000yr), 39Ar, 14C, 36Cl and 4He have been…
Using natural gas emission monitoring to assess the hydrogeological mineral springs genesis in non-active zone: example from the Corsica Island Open
Deep groundwater circulation increases multiplicity and complexity of groundwater pathways providing a high diversity of intrinsic water properties. Water-rock interactions at depth associated with transit time disparities generate singula…
Dissolved oxygen stable isotopes in groundwater: a new tracer of biogeochemical reactivity for the underground Critical Zone Open
International audience
Dissolved gases monitoring to disclose regional hydrogeochemical interactions processes involved in mineral water genesis in non-active zone: the case of Corsica Island Open
International audience
A glimpse of the Anthropocene captured by environmental tracers in the groundwater of a fractured aquifer Open
International audience
Multiple flow dynamics in karst aquifers following recharge events highlighted by dissolved gases – case of the Lez karstic system (South of France) Open
International audience
Continuous Dissolved Gas Tracing of Fracture‐Matrix Exchanges Open
Transport in fractured media plays an important role in a range of processes, from rock weathering and microbial processes to contaminant transport, and energy extraction and storage. Diffusive transfer between the fracture fluid and the r…
A glimpse of the Anthropocene captured by environmental tracers in the groundwater of a fractured aquifer Open
The Anthropocene is an epoch in Earths history that has been proposed to characterise the global impact of human activities on the Earth's atmosphere, biosphere, hydrosphere, geosphere, i.e. the Critical Zone.Just as for past climates, the…
4He as a dating groundwater tool in shallow crystalline aquifers Open
4He as a dating groundwater tool in shallow crystalline aquifersLabasque T., Chatton E. , Aquilina L., Vergnaud V.OSUR-Gosciences Rennes, Universit Rennes1 CNRS; Rennes FranceGroundwater dating methods have been widely used during the last…
Dipole and Convergent Single-Well Thermal Tracer Tests for Characterizing the Effect of Flow Configuration on Thermal Recovery Open
Experimental characterization of thermal transport in fractured media through thermal tracer tests is crucial for environmental and industrial applications such as the prediction of geothermal system efficiency. However, such experiments h…
Thermal Attenuation and Lag Time in Fractured Rock: Theory and Field Measurements From Joint Heat and Solute Tracer Tests Open
The modeling and prediction of heat transfer in fractured media is particularly challenging as hydraulic and transport properties depend on a multiscale structure that is difficult to resolve. In addition to advection and dispersion, heat …
Contribution of dissolved gases to the understanding of groundwater hydrobiogeochemical dynamics Open
For more than a century, global change has led to a profound modification of our societies, our lifestyles and, of course, our environment. This trajectory followed willy-nilly by all mankind has consequences for natural systems and alread…
Field Continuous Measurement of Dissolved Gases with a CF-MIMS: Applications to the Physics and Biogeochemistry of Groundwater Flow Open
In the perspective of a temporal and spatial exploration of aquatic environments (surface and groundwater), we developed a technique for field continuous measurements of dissolved gases with a precision better than 1% for N2, O2, CO2, He, …
View article: How global changes impact water resources in a southern coastal metropolis? Case of Recife (Brazil)
How global changes impact water resources in a southern coastal metropolis? Case of Recife (Brazil) Open
The Recife Metropolitan Region is a hot spot illustrating the problems of southern countries on water issues where water resources are threatened both for quantity and quality in the context of global changes. Based on a transdisciplinary …