A5034854013- Hydrology and Watershed Management Studies
- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Soil and Water Nutrient Dynamics
- Cryospheric studies and observations
- Landslides and related hazards
- Soil erosion and sediment transport
- Flood Risk Assessment and Management
- Soil and Unsaturated Flow
- Marine and coastal ecosystems
- Fish Ecology and Management Studies
- Hydrological Forecasting Using AI
- Karst Systems and Hydrogeology
- Geological Modeling and Analysis
- Methane Hydrates and Related Phenomena
- Mycobacterium research and diagnosis
- Geological and Geophysical Studies Worldwide
- High voltage insulation and dielectric phenomena
- Computational Physics and Python Applications
- French Urban and Social Studies
- Climate change and permafrost
- Atmospheric and Environmental Gas Dynamics
- Reservoir Engineering and Simulation Methods
- Pharmaceutical and Antibiotic Environmental Impacts
- Winter Sports Injuries and Performance
Université de Rennes
2019-2025
Centre National de la Recherche Scientifique
2019-2025
University of Neuchâtel
2023-2025
Géosciences Rennes
2019-2025
Institut National de la Recherche Scientifique
2019
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 Groundwater flow at the hillslope scale is controlled by hydraulic properties and topography. Geological media are inherently heterogeneous, with depending on both lithology external factors such as weathering, erosion, tectonic activity. The effects of stress‐dependent variations in porosity conductivity groundwater residence times remain unexplored. Using process‐based models, we demonstrate how lateral stresses cause significant stress strain, particularly slopes steeper than...
Headwater catchments, defined as the uppermost segments of drainage networks with intermittent and/or perennial third-order streams, are vital sources freshwater and nutrients for downstream river basins. Despite their critical role in sustaining natural ecosystems supporting human services, these systems remain poorly understood often referred to 'aqua incognita1.' A key challenge lies unraveling hidden groundwater processes that contribute storage-discharge dynamics. Recent advances both...
Veterinary antibiotics, widely used in agriculture, are emerging contaminants with significant implications for water quality and ecosystem health. This study investigates the presence heritage of antibiotics other pollutants groundwater within Naizin watershed (~5 km²) Brittany (western France), a region marked by intensive agricultural activity. Field measurements revealed occurrence veterinary surface groundwater, alongside pollutants. Additionally, CFCs SF6 gas tracers provided...
Abstract. The assessment of effective hydraulic properties at the catchment scale, i.e., conductivity (K) and transmissivity (T), is particularly challenging due to sparse availability hydrological monitoring systems through stream gauges boreholes. To overcome this challenge, we propose a calibration methodology which only considers information from digital elevation model (DEM) spatial distribution network. built on assumption that groundwater system main driver controlling density...
Abstract Non‐perennial streams play a crucial role in ecological communities and the hydrological cycle. However, key parameters processes involved stream intermittency remain poorly understood. While climatic conditions, geology land use are well identified, assessment modelling of groundwater controls on streamflow intermittence challenge. In this study, we explore new opportunities to calibrate process‐based 3D flow models designed simulate hydrographic network dynamics groundwater‐fed...
Abstract Streamflow generation and biochemical hotspots are significantly influenced by groundwater contributions distributed along the drainage network. However, identifying geomorphic landscape features that drive groundwater‐surface water interactions remains challenging. In this study, we investigate role of knickpoints in controlling these a mountainous stream Switzerland. We employ combination synoptic sampling environmental tracers, endmember mixing calculations, flow simulations. Our...
Predicting and managing water resources at regional scale under different climate socio-economic scenarios appears crucial. At the same time, protection of rivers wetlands is essential must include groundwater given its contribution to surface water. Yet, assessing temporal spatial variability contributions constrained due limited observations. This study aims quantify resurgences, i.e. flow (rivers or wetlands), in space time estimated by calibrated models (French AquiFR platform). We...
Due to the difficulties of gathering relevant data groundwater systems and lack fundamental physically-based understanding on processes involved, representation flow heterogeneity in catchment- regional-scale hydrological models is often overlooked. We limit with simplified homogeneous shallow aquifers where effective hydraulic properties are derived from global-scale database. This raises questions regarding validity such quantify potential impacts climate change, subsurface expected play a...
While the role of climate conditions in controlling streamflow intermittence is well recognised, assessment and modelling groundwater remains a challenge. In this study, we use process-based 3D flow models to simulate stream intermittency groundwater-fed headwaters. Streamflow measurements network maps are considered together constrain effective hydraulic properties aquifers. The framework has been applied validated pilot catchments with unconfined crystalline aquifers (France) contrasting...
The occurrence of springs and their connectivity within stream networks is typically associated with three key controlling factors: climate, topography the distribution hydraulic properties. In crystalline media, this often related to lithology presence fractures. addition, tectonic topographic stresses can modify properties through compressive extensional forces acting on rock mass However, these controls are rarely considered for hillslope scale applications. aim research investigate...
Non-perennial streams play a crucial role in ecological communities. However, the key parameters and processes involved stream intermittence remain poorly understood. While climate conditions, geology land use are well identified, assessing modeling groundwater controls on streamflow remains challenge. In this study, we explore new opportunities to calibrate process-based 3D flow models designed simulate groundwater-fed headwaters. Streamflow measurements network maps jointly considered...
Le bassin rennais n’est pas épargné par le changement climatique. Des conditions climatiques inhabituelles fragilisent déjà système d’alimentation en eau potable du territoire. Mais qu’en sera-t-il dans futur ? Les gestionnaires d’Eau Bassin Rennais ont besoin d’outils pour se projeter les évolutions possibles des ressources amont ouvrages de captages. Pour y répondre, nous avons développé une démarche modélisation hydro(géo)logique à l’échelle versant, adaptée au contexte géologique socle...
Abstract Gas exchanges between streams and atmosphere strongly impact biogeochemical cycles, yet their quantification in space time remains challenging. We propose a new method to measure gas exchange rate coefficients headwater streams. The is based on simultaneous slug injections of conservative tracer volatile tracer, coupled situ semicontinuous measurements. Its originality lies the mathematical exploitation tracers' breakthrough curves. Taking advantage entire curves, we infer...
Hydrological predictions for ungauged basins at catchment and regional scales are still challenged by the lack of available data. Under assumption that perennial stream network is mostly fed groundwaters, its spatial extent controlled magnitude subsurface hydraulic conductivity (K) with respect to actual recharge rate (R). In addition, residence time groundwater directly storage capacity aquifer system, i.e. porosity (Ө). Here we propose a new inversion approach jointly considers...
<p>Human activity has more than doubled reactive nitrogen delivery to Earth’s ecosystems. In the past several decades, efforts have been made reduce agricultural inputs of nitrogen, but decrease nitrate concentration in rivers is also controlled by natural processes, especially flow and denitrification aquifer. Yet, with current knowledge, it remains difficult characterize transit times groundwater rates at scales relevant for mitigation actions (catchment scale...