References of "Hallet, Vincent"
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See detailGIS-based hydrogeological databases and groundwater modelling
Gogu, Radu Constantin; Carabin, Guy; Hallet, Vincent et al

in Hydrogeology Journal (2001), 9(6), 555-569

Reliability and validity of groundwater analysis strongly depend on the availability of large volumes of high-quality data. Putting all data into a coherent and logical structure supported by a computing ... [more ▼]

Reliability and validity of groundwater analysis strongly depend on the availability of large volumes of high-quality data. Putting all data into a coherent and logical structure supported by a computing environment helps ensure validity and availability and provides a powerful tool for hydrogeological studies. A hydrogeological geographic information system (GIS) database that offers facilities for groundwater-vulnerability analysis and hydrogeological modelling has been designed in Belgium for the Walloon region. Data from five river basins, chosen for their contrasting hydrogeological characteristics, have been included in the database, and a set of applications that have been developed now allow further advances. Interest is growing in the potential for integrating GIS technology and groundwater simulation models. A "loose-coupling" tool was created between the spatial-database scheme and the groundwater numerical model interface GMS (Groundwater Modelling System). Following time and spatial queries, the hydrogeological data stored in the database can be easily used within different groundwater numerical models. [less ▲]

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See detailLocation of protection zones along production galleries : an example of methodology
Hallet, Vincent; Nzali, Timothée; Rentier, Céline et al

in Dassargues, Alain (Ed.) Tracers and Modelling in Hydrogeology (2000, May)

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See detailCarte hydrogéologique prototype de Wallonie, Modave - Clavier 48/7-8, 1/25.000 : [notice explicative]
Ruthy, Ingrid ULg; Hallet, Vincent; Peters, Valérie et al

Book published by Ministère de la Région wallonne, Direction générale des ressources naturelles et de l'environnement - Edition provisoire: mars 2000 (2000)

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See detailCarte hydrogéologique de Wallonie, Modave - Clavier 48/7-8
Ruthy, Ingrid ULg; Hallet, Vincent; Peters, Valérie et al

Cartographic material (2000)

Detailed reference viewed: 24 (0 ULg)
See detailCarte hydrogéologique prototype de Wallonie, Waremme - Momalle 41/3-4, , 1/25.000 : [notice explicative]
Ruthy, Ingrid ULg; Hallet, Vincent; Peters, Valérie et al

Book published by Ministère de la Région wallonne, Direction générale des ressources naturelles et de l'environnement - Edition provisoire: mars 2000 (2000)

Detailed reference viewed: 6 (0 ULg)
See detailCarte hydrogéologique de Wallonie, Waremme - Momalle 41/3-4
Ruthy, Ingrid ULg; Hallet, Vincent; Peters, Valérie et al

Cartographic material (2000)

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See detailModélisation déterministe des écoulements et du transport de contaminants pour la détermination des zones de protection en Belgique
Dassargues, Alain ULg; Hallet, Vincent

in Milieux poreux et transferts hydriques - Bulletin du Groupe Francophone Humidimétrie et Transferts en Milieux Poreux, Strasbourg (2000)

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See detailAction 'Hydrogéologie de la vallée du Draa' (consolidation du SigmaDraa) (Maroc): rapport d'avancement n°2
Horion, Denis; Hallet, Vincent; Dassargues, Alain ULg et al

Report (1999)

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See detailEffective porosity values used in calibrated transport simulations in a fissured and slightly karstified chalk aquifer
Hallet, Vincent; Dassargues, Alain ULg

in Herbert, M.; Kovar, K. (Eds.) Groundwater Quality 1998, Tübinger Geowissenschaftliche Arbeiten (TGA) (1998)

In fissured and slighly karstified chalks, the main difficulty for modelling groundwater flow and transport consists in finding a good approximation of the highly heterogeneous reality by a REV concept ... [more ▼]

In fissured and slighly karstified chalks, the main difficulty for modelling groundwater flow and transport consists in finding a good approximation of the highly heterogeneous reality by a REV concept. No major problem is encountered for groundwater flow simulations when the high contrast in hydraulic conductivity can be given to the cells/elements of the model. The Darcy’s law is applied in terms of specific flow rate, through the REV. When considering transport, it is often assumed that the calibrated field of hydraulic conductivity should be kept unchanged. Consequently, ‘physically non acceptable’ values of the effective porosity are often needed to obtain a match between modelled and measured breakthrough curves. The model becomes, to some extent, a black-box model. [less ▲]

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See detailEffets de retard et de piégeage des polluants dus à la présence d’eau immobile dans le milieu souterrain : importance de ces effets et modélisation
Brouyère, Serge ULg; Hallet, Vincent; Dassargues, Alain ULg

in Actes du Colloque National du CBGI/BCIG :’La Géologie de l’Ingénieur et l’eau dans le sous-sol’ (1997)

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See detailContribution to the simulation of nitrates transport in a double-porosity aquifer
Biver, Pierre; Hallet, Vincent; Dassargues, Alain ULg

in Solutions'95, XXVI International Congress of the International Aassociation of Hydrogeologists (IAH) (1995)

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See detailModélisation de la nappe aquifère de Hesbaye
Dassargues, Alain ULg; Radu, Jean-Pol ULg; Hallet, Vincent et al

Report (1987)

Detailed reference viewed: 8 (1 ULg)
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See detailHydrogeological study by geophysical prospection in Florennes
Dassargues, Alain ULg; Hallet, Vincent; Monjoie, Albéric

Report (1986)

Detailed reference viewed: 11 (0 ULg)