A5078854619- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Soil and Water Nutrient Dynamics
- Hydrological Forecasting Using AI
- Flood Risk Assessment and Management
- Water-Energy-Food Nexus Studies
- Karst Systems and Hydrogeology
- Soil erosion and sediment transport
- Wastewater Treatment and Nitrogen Removal
- Geophysical and Geoelectrical Methods
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Cryospheric studies and observations
- Hydrology and Drought Analysis
- Geochemistry and Geologic Mapping
- Geological and Geophysical Studies Worldwide
- Water Quality and Pollution Assessment
- Computational Physics and Python Applications
- Water Systems and Optimization
- Hydraulic Fracturing and Reservoir Analysis
- Geographic Information Systems Studies
- Atmospheric Ozone and Climate
- Soil and Unsaturated Flow
- Water resources management and optimization
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2025
Forum Réfugiés - Cosi
2020-2024
Institut de physique du globe de Paris
2019-2022
Centre National de la Recherche Scientifique
2015-2022
Université Paris Cité
2019-2022
Géosciences Rennes
2014-2021
Université de Rennes
2015-2019
AgroParisTech
2015-2018
Université Claude Bernard Lyon 1
2015-2017
Significance Although groundwater is a critical source of drinking water and irrigation, it has been polluted worldwide by agriculture, industry, domestic activity. Because assessing quality recovery rates challenging, we developed method for determining where how quickly nitrate removed in aquifers using just few point measurements chemistry. This methodology opens new avenues characterizing catchment-scale nutrient dynamics, including nitrogen, carbon, silica, with existing datasets...
Abstract. In response to the growing demand for groundwater flow models, we present HydroModPy, an open-source toolbox designed automate their deployment at catchment scale. Built on top of MODFLOW-enabling FloPy library, HydroModPy combines robust WhiteboxTools geospatial analysis and well-validated MODFLOW code modeling. This Python-based streamlines construction, calibration, unconfined aquifer models while adhering FAIR (Findable, Accessible, Interoperable, Reusable) principles. It...
Abstract Large proportions of rainwater and snowmelt infiltrate into the subsurface before contributing to stream flow water quality. Subsurface dynamics steer transport transformation contaminants, carbon, weathering products other biogeochemistry. The distribution groundwater ages with depth is a key feature these dynamics. Predicting are strong test hypotheses about structures time‐varying processes. Chlorofluorocarbon (CFC)‐based revealed an unexpected age stratification in 0.47 km 2...
The long-term fate of agricultural nitrate depends on rapid subsurface transfer, denitrification and storage in aquifers. Quantifying these processes remains an issue due to time varying contribution, unknown aquifer heterogeneous potential. Here, we develop a parsimonious modelling approach that uses discharge river concentration time-series combined with groundwater age data determined from chlorofluorocarbons springs boreholes. To leverage their informational content, use Boussinesq-type...
Abstract. Groundwater recharge is difficult to estimate, especially in fractured aquifers, because of the spatial variability soil properties and lack data at basin scale. A relevant method, known as water table fluctuation (WTF) consists inferring directly from WTFs observed boreholes. However, WTF method neglects impact lateral groundwater redistribution aquifer; i.e., it assumes that all are attributable recharge. In this study, we developed approach frequency domain better consider flow,...
Abstract Weathering and erosion processes are crucial to Critical Zone (CZ) evolution, landscape formation availability of natural resources. Although many these take place in the deep CZ (∼10–100 m), direct information about its architecture remain scarce. Near‐surface geophysics offers a cost‐effective minimally intrusive alternative drilling that provides physical properties CZ. We propose novel workflow combining seismic measurements, petrophysical modelling geostatistical analysis...
Abstract We investigated how geomorphological structures shape Transit Time Distributions (TTDs) in shallow aquifers. Extensive three‐dimensional simulations were performed to determine the TTDs for synthetic convergent, straight, and divergent hillslopes with a constant slope. The uniform recharge applied on top of aquifer is transferred receiving stream through steady‐state groundwater flows, return flows saturation excess overland flows. Without seepage, evolve from uniform‐ power...
Abstract Streamwater transit time distributions display a variable proportion of old waters (≥1 year). We hypothesize that the corresponding long times result from groundwater contributions to stream and seasonal streamwater variations (a) different flowpaths (overland flow, seepage flow baseflow) (b) stratification residence times. develop parsimonious model capture contribution discharge its effect on transient Infiltration is partitioned according aquifer saturation between Boussinesq...
Abstract An integrated ecohydrological modeling approach was deployed in three long‐term critical zone (CZ) observatories of the French CZ network (CZ Observatories—Application and Research) to better understand how heterogeneity modulates water cycle within territories. Ecohydrological simulations with physically based model EcH 2 O‐iso constrained by a wide range observations crossing several disciplines (meteorology, hydrology, geomorphology, geophysics, soil sciences, satellite imagery)...
Abstract. Groundwater recharge is difficult to estimate, especially in fractured aquifers, because of the spatial variability soil properties and lack data at basin scale. A relevant method, known as WTF consists inferring directly from water table fluctuations (WTF) observed boreholes. However, method neglects impact lateral groundwater redistribution aquifer, i.e. assumes that all are attributable recharge. In this study, we developed approach frequency domain better consider flow, which...
The French OZCAR critical zone network offers the opportunity to conduct multi-site studies and explore functioning under contrasted climate, geology, vegetation land use. In this study, an integrated modeling of water cycle is performed with ecohydrological model EcH2O-iso in three long-term observatories: (1) Naizin watershed characterized by oceanic a metamorphic bedrock intensive agriculture (north-west France, AgrHyS observatory); (2) Aurade watershed, warmer semi-continental...