Search Results - "Dewandel"

Review: Hydrogeology of weathered crystalline/hard-rock aquifers—guidelines for the operational survey and management of their groundwater resources by Lachassagne, Patrick, Dewandel, Benoît, Wyns, Robert

“…Hard rocks or crystalline rocks (i.e., plutonic and metamorphic rocks) constitute the basement of all continents, and are particularly exposed at the surface…”
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Steady-state semi-analytical solutions for assessing the two-dimensional groundwater hydraulic head depletion induced by river dam removal by Dewandel, Benoît, Lanini, Sandra, Frissant, Nicolas

“…•Analytical solutions for assessing the GW hydraulic head change due to dam removal.•River-groundwater and dam reservoir – groundwater exchanges.•Method of…”
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An improved steady-state semianalytical solution for assessing the two-dimensional hydraulic head distribution induced by an underground dam in a sloping unconfined aquifer by Dewandel, Benoît, Lanini, Sandra, Frissant, Nicolas

“…A steady-state semianalytical solution for evaluating the hydraulic head distribution created by a rectangular underground dam that fully penetrates a sloping…”
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Steady-state semianalytical solutions for assessing the two-dimensional hydraulic head distribution induced by an underground dam in a sloping aquifer with artificial aquifer recharge and pumping by Dewandel, Benoît, Lanini, Sandra, Frissant, Nicolas

“…Underground dams are a technology for artificially increasing existing groundwater resources. They modify the natural groundwater flow in aquifers and,…”
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The fracture permeability of Hard Rock Aquifers is due neither to tectonics, nor to unloading, but to weathering processes by Lachassagne, Patrick, Wyns, Robert, Dewandel, Benoît

“…Terra Nova, 23, 145–161, 2011 The hydrogeology of superficial (∼0–100 m b.g.l.) Hard Rock Aquifers (HRA; i.e. plutonic and metamorphic rocks) has so far been…”
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Fracture controlled permeability of ultramafic basement aquifers. Inferences from the Koniambo massif, New Caledonia by Jeanpert, J., Iseppi, M., Adler, P.M., Genthon, P., Sevin, B., Thovert, J.-F., Dewandel, B., Join, J.-L.

“…We study the relationship between fracture distribution and permeability in weathered peridotites exposed to tropical climate using the data from the Koniambo…”
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A conceptual hydrodynamic model of a geological discontinuity in hard rock aquifers: Example of a quartz reef in granitic terrain in South India by Dewandel, Benoît, Lachassagne, Patrick, Zaidi, Faisal K., Chandra, Subash

“…► Hydrodynamic properties of quartz reef in granite are described. ► Weathering processes appear to be at the origin of fissures permeability. ► Results…”
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Salinity spatial patterns in Mediterranean coastal areas: The legacy of historical water infrastructures by Marien, L., Crabit, A., Dewandel, B., Ladouche, B., Fleury, P., Follain, S., Cavero, J., Berteloot, V., Colin, F.

“…Mediterranean coastal areas have been occupied and developed intensively for a long time facing issues related to agricultural production, urbanization,…”
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Groundwater flows in weathered crystalline rocks: Impact of piezometric variations and depth-dependent fracture connectivity by Guihéneuf, N., Boisson, A., Bour, O., Dewandel, B., Perrin, J., Dausse, A., Viossanges, M., Chandra, S., Ahmed, S., Maréchal, J.C.

“…•Depth-dependent fracture connectivity in weathered crystalline rocks.•Fractured interface between saprolite and granite controls groundwater…”
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Artificial aquifer recharge and pumping: transient analytical solutions for hydraulic head and impact on streamflow rate based on the spatial superposition method by Dewandel, Benoît, Lanini, Sandra, Hakoun, Vivien, Caballero, Yvan, Maréchal, Jean-Christophe

“…The behaviour of transient groundwater mounds in response to infiltration from surface basins has been studied for decades, but some common settings still lack…”
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Use of hydraulic tests at different scales to characterize fracture network properties in the weathered-fractured layer of a hard rock aquifer by Maréchal, J. C., Dewandel, B., Subrahmanyam, K.

“…The hydrodynamic properties of the weathered‐fractured layer of a hard‐rock pilot watershed in a granitic terrain are characterized using hydraulic tests at…”
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Improving the Methods for Processing Hard Rock Aquifers Boreholes’ Databases. Application to the Hydrodynamic Characterization of Metamorphic Aquifers from Western Côte d’Ivoire by Aoulou, Kouassi Aristide, Pistre, Severin, Oga, Yéï Marie Solange, Dewandel, Benoît, Lachassagne, Patrick

“…Statistical analysis of a borehole database, linear discharges, and water strikes processing enabled an understanding of the structure, geometry and…”
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Detection of Irrigated Crops from Sentinel-1 and Sentinel-2 Data to Estimate Seasonal Groundwater Use in South India by Ferrant, Sylvain, Selles, Adrien, Le Page, Michel, Herrault, Pierre-Alexis, Pelletier, Charlotte, Al-Bitar, Ahmad, Mermoz, Stéphane, Gascoin, Simon, Bouvet, Alexandre, Saqalli, Mehdi, Dewandel, Benoit, Caballero, Yvan, Ahmed, Shakeel, Maréchal, Jean-Christophe, Kerr, Yann

“…Indian agriculture relies on monsoon rainfall and irrigation from surface and groundwater. The interannual variability of monsoon rainfalls is high, which…”
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Estimation of hard rock aquifers hydraulic conductivity from geoelectrical measurements: A theoretical development with field application by Chandra, Subash, Ahmed, Shakeel, Ram, Avadh, Dewandel, Benoit

“…Based on the analogy between Darcy’s law for groundwater flow and Ohm’s law for electric current flow, a methodology has been developed to estimate the…”
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Conjunctive use of floodwater harvesting for managed aquifer recharge and irrigation on a date farm in Morocco by Khardi, Yassine, Lacombe, Guillaume, Dewandel, Benoit, Hammani, Ali, Taky, Abdelilah, Bouarfa, Sami

“…In arid regions, harvesting floodwater can mitigate irrigation‐induced groundwater depletion by providing additional surface water and recharging aquifers. We…”
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Assessing water availability in a semi-arid watershed of southern India using a semi-distributed model by Perrin, J., Ferrant, S., Massuel, S., Dewandel, B., Maréchal, J.C., Aulong, S., Ahmed, S.

“…► An integrated water resource assessment model is applied to a semi-arid crystalline watershed. ► Recharge, runoff, surface and groundwater storage are…”
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A generalized 3-D geological and hydrogeological conceptual model of granite aquifers controlled by single or multiphase weathering by Dewandel, B., Lachassagne, P., Wyns, R., Maréchal, J.C., Krishnamurthy, N.S.

“…The weathered layers of crystalline rocks form aquifers that are of prime interest for water supply in hard rock areas. These weathering profiles generally…”
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Managed Aquifer Recharge in fractured crystalline rock aquifers: Impact of horizontal preferential flow on recharge dynamics by Nicolas, Madeleine, Bour, Olivier, Selles, Adrien, Dewandel, Benoit, Bailly-Comte, Vincent, Chandra, Subash, Ahmed, Shakeel, Maréchal, Jean-Christophe

“…[Display omitted] •Preferential flow in the weathering interface controls recharge propagation.•Variable bedrock relief causes aquifer compartmentalization and…”
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Improving hydrogeological understanding through well-test interpretation by diagnostic plot and modelling: a case study in an alluvial aquifer in France by Garin, Thibaut, Arfib, Bruno, Ladouche, Bernard, Goncalves, Julio, Dewandel, Benoit

“…The study of groundwater resources using pumping test data is usually carried out with the Theis solution, which enables the hydraulic parameters of porous…”
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A simple groundwater balance tool to evaluate the three-dimensional specific yield and the two-dimensional recharge: application to a deeply weathered crystalline aquifer in southern India by Mizan, Syed Adil, Dewandel, Benoit, Selles, Adrien, Ahmed, Shakeel, Caballero, Yvan

“…Crystalline aquifers are among the most complex groundwater systems, requiring adequate methods for realistic characterization and suitable techniques for…”
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