Výsledky vyhledávání - "Jean-Raynald De Dreuzy"

Architecture of seepage zones combined with their residence time to constrain hydrogeological models

Autor: Ronan Abhervé, Clément Roques, Eliot Chatton, Laurent Servière, Jean-Raynald de Dreuzy, Luc Aquilina

Publikováno v: EGU General Assembly 2023
EGU General Assembly 2023, European Geosciences Union, Apr 2023, Vienna, Austria. pp.EGU23-15677, ⟨10.5194/egusphere-egu23-15677⟩

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 controlled b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94b53f285d3525352ad6dfe1904fa9d9
https://doi.org/10.5194/egusphere-egu23-15677

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Calibration of coastal hydrogeological models for the analysis of groundwater-induced flooding: from instrumentation to model reliability

Autor: Martin Le Mesnil, Jean-Raynald de Dreuzy, Luc Aquilina, Frédéric Gresselin, Alexandre Gauvain

Publikováno v: EGU General Assembly 2023
EGU General Assembly 2023, European Geosciences Union, Apr 2023, Vienna, Austria. pp.EGU23-12633, ⟨10.5194/egusphere-egu23-12633⟩

We determine the sensitivity of groundwater-induced flooding forecast to different modelling strategies (evolving model structure and quantity/nature of data). We test three calibration strategies on shallow coastal aquifers:we use the river network

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::342fdd9f2046197d277ab17181c84c44
https://insu.hal.science/insu-04081286

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Aqui-FR: towards a hydro-geological seasonal forecasting system for metropolitan France

Autor: Jean-Marie Willemet, Simon Munier, Francois Besson, Pierre Etchevers, Patrick Le Moigne, Fabienne Rousset, Jean-Michel Soubeyroux, Christian Viel, Florence Habets, Philippe Ackerer, Nadia Amraoui, Jean-Raynald de Dreuzy, Nicolas Gallois, Claire Magand, Dominique Thiery, Jean-Pierre Vergnes

Publikováno v: XIeme Assemblée Scientifique de l’Association Internationale des Sciences Hydrologiques (AISH)
XIeme Assemblée Scientifique de l’Association Internationale des Sciences Hydrologiques (AISH), May 2022, Montpellier, France

In France, groundwater is an important resource for industry, irrigation, and drinking water. As the dry periods become more frequent and longer due to the changing climate, it is crucial to forecast water table level evolution for the forthcoming mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd6af2fee1ef565343102441f27e503d
https://doi.org/10.5194/iahs2022-525

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Spring discharge, transit times and intermittency in an alpine catchment: how geomorphology shapes the spatio-temporal dynamics?

Autor: Clément Roques, Eliot Chatton, Gaël Chrétien, Laurent Servière, Xavier Pasquier, Ronan Abhervé, Alexandre Gauvain, Luc Aquilina, Jean-Raynald de Dreuzy

Publikováno v: European Geosciences Union General Assembly 2022 (EGU22)
European Geosciences Union General Assembly 2022 (EGU22), European Geosciences Union, May 2022, Vienna, Austria. pp.EGU22-7051

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-Barthélemy, Pyrenees, France). Field observat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64bb142d7f06b0402f8d436e719c4674
https://insu.hal.science/insu-03694080

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Assessment of hydraulic conductivity from the hydrographic network in shallow crystalline aquifers

Autor: Ronan Abhervé, Alexandre Gauvain, Clément Roques, Laurent Longuevergne, Luc Aquilina, Jean-Raynald de Dreuzy

Publikováno v: European Geosciences Union General Assembly 2022 (EGU22)
European Geosciences Union General Assembly 2022 (EGU22), European Geosciences Union, May 2022, Vienna, Austria. pp.EGU22-13355

Hydrological predictions for ungauged basins at catchment and regional scales still faces the challenge of lack of available data. To meet this challenge, we propose a new method relying on the structure of the stream network. Under the assumption th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c8de3830d77e28c54ac975d80e61970
https://insu.hal.science/insu-03694076

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Calibration of groundwater seepage on the spatial distribution of the stream network to assess catchment-scale hydraulic conductivity

Autor: Ronan Abhervé, Alexandre Gauvain, Clément Roques, Laurent Longuevergne, Stéphane Louaisil, Luc Aquilina, Jean-Raynald de Dreuzy

To supplement the use of hydraulic tests and assess catchment-scale hydraulic conductivity (K), we propose a methodology for shallow aquifers only based on the Digital Elevation Model (DEM) and on the observation of the stream network. The methodolog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f3a96fc04efefc447e1e48b5c9f7610
https://hess.copernicus.org/preprints/hess-2022-175/

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Dynamic Contributions of Stratified Groundwater to Streams Controls Seasonal Variations of Streamwater Transit Times

Autor: Jean Marçais, Louis A. Derry, Luca Guillaumot, Luc Aquilina, Jean‐Raynald de Dreuzy

Publikováno v: Water Resources Research
Water Resources Research, 2022, 58 (3), pp.e2021WR029659. ⟨10.1029/2021wr029659⟩
Water Resources Research, American Geophysical Union, In press, pp.e2021WR029659. ⟨10.1029/2021wr029659⟩

International audience; Streamwater transit time distributions display a variable proportion of old waters ( ≥1 yr). We hypothesize that the corresponding long transit times result from groundwater contributions to the stream and that seasonal stre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1665b5848db29cc26fcf8d66cdd812be
https://doi.org/10.1029/2021wr029659

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Lagged rejuvenation of groundwater indicates internal flow structures and hydrological connectivity

Autor: Tamara Kolbe, Thierry Labasque, Jean Marçais, Jean-Raynald de Dreuzy, Kevin Bishop

Publikováno v: Hydrological Processes
Hydrological Processes, Wiley, 2020, 34 (10), pp.2176-2189. ⟨10.1002/hyp.13753⟩
Hydrological Processes, 2020, 34 (10), pp.2176-2189. ⟨10.1002/hyp.13753⟩

International audience; Large proportions of rain water and snowmelt infiltrate into the subsurface before contributing to stream flow and stream water quality. Subsurface flow dynamics steer the transport and transformation of contaminants, carbon,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d516c2ff777e6d07f6fc69856306e2e
https://doi.org/10.1002/hyp.13753

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Recession discharge from compartmentalized bedrock hillslopes

Autor: Clément Roques, David E. Rupp, Jean-Raynald de Dreuzy, Laurent Longuevergne, Elizabeth R. Jachens, Gordon Grant, Luc Aquilina, John S. Selker

Publikováno v: Hydrology and Earth System Sciences
Hydrology and Earth System Sciences, 2022, 26 (16), pp.4391-4405. ⟨10.5194/hess-26-4391-2022⟩

We used numerical modelling to explore the role of the vertical compartmentalization of hillslopes on groundwater flow and recession discharge. We found that, when hydraulic properties are vertically compartmentalized, streamflow recession behaviour

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d74be748e238645af69f43464058fad2
https://doi.org/10.5194/hess-2022-7

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Competition within low-density bacterial populations as an unexpected factor regulating carbon decomposition in bulk soil

Autor: Laure Vieublé Gonod, Naoise Nunan, Patricia Garnier, Alexandre Coche, Jean-Raynald de Dreuzy, Tristan Babey, Alain Rapaport

Publikováno v: Soil Biology and Biochemistry
Soil Biology and Biochemistry, Elsevier, 2022, 164 (108423), ⟨10.1016/j.soilbio.2021.108423⟩
Soil Biology and Biochemistry, Elsevier, 2021, 164 (108423), ⟨10.1016/j.soilbio.2021.108423⟩
Soil Biology and Biochemistry, 2022, 164 (108423), ⟨10.1016/j.soilbio.2021.108423⟩
Soil Biology and Biochemistry, Elsevier, In press, pp.108423. ⟨10.1016/j.soilbio.2021.108423⟩

International audience; Bacterial decomposition of organic matter in soils is generally believed to be mainly controlled by the access bacteria have to organic substrate. The influence of bacterial traits on this control has, however, received little

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc2728983f4de599008ca375c93a2f12
https://hal-insu.archives-ouvertes.fr/insu-03347522

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