References of "Brouyère, Serge"
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See detailUtilisation des techniques de traçage en hydrogéologie. Investigation et quantification des interactions rivière-nappe par traçage, monitoring des niveaux d'eau et modélisation
Brouyère, Serge ULg; Batlle-Aguilar, Jordi

Conference (2007, June 08)

Ce séminaire visait à présenter à des étudiants de l'EIER les grands principes des techniques de traçage en hydrogéologie, accompagné d'une illustration avec des résultats d'investigations menées sur un ... [more ▼]

Ce séminaire visait à présenter à des étudiants de l'EIER les grands principes des techniques de traçage en hydrogéologie, accompagné d'une illustration avec des résultats d'investigations menées sur un site contaminé. [less ▲]

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See detailIntermediate report on the development of the Geer hydrological model (surface and subsurface water) for climatic change scenario on that sub-catchment
Goderniaux, Pascal ULg; Orban, Philippe ULg; Dassargues, Alain ULg et al

Report (2007)

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change ... [more ▼]

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change impacts on groundwater reserves. This report describes the calculation code used, the general hypotheses chosen to develop the model, the conceptual model, the climate change scenarios and the final objectives of the study. [less ▲]

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See detailExemple d'étude hydrogéologique d'un système rivière-aquifère: Flémalle test site
Batlle-Aguilar, Jordi; Brouyère, Serge ULg

Conference (2007, April 18)

Cette présentation des investigations menées pour quantifier les échanges nappe - rivière au droit d'une friche industrielle fortement contaminée

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See detailLa Méthode de Dilution Ponctuelle avec Volume Fini de Traceur (FVPDM): une nouvelle technique de traçage pour le monitoring des flux de Darcy
Brouyère, Serge ULg; Batlle-Aguilar

Conference (2007, April 18)

Cette présentation décrit les principe de la technique de traçage puits unique FVPDM

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See detailTowards an integrated methodology for groundwater protection
Brouyère, Serge ULg; Popescu, Ileana Cristina ULg

Conference (2007, April 11)

This presentation reviews different aspects of groundwater pollution and protection to try to identify guidelines for an integrated approach for groundwater protection and management

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Peer Reviewed
See detailSelected groundwater studies of EU project AquaTerra leading to large-scale basin considerations
Barth, J. A. C.; Kalbus, E.; Schmidt, Christina ULg et al

in Water Practice & Technology (2007), 2(3),

Several local groundwater studies within the EU project AquaTerra in the Basins of the Meuse, Elbe point at significant influences of groundwater on surface water, while the Brévilles Catchment shows a ... [more ▼]

Several local groundwater studies within the EU project AquaTerra in the Basins of the Meuse, Elbe point at significant influences of groundwater on surface water, while the Brévilles Catchment shows a distinct problematic of pesticide loading to groundwater. Further modeling studies are currently being developed. In the Danube Basin no specific groundwater studies were carried out in the framework of AquaTerra. However on larger scales geochemical proxies such as strontium isotope ratios can give an insight into groundwater contributions to the river that reflects an integral signal of the environmental status of the Basin. Future local groundwater studies should be further correlated to the environmental status of rivers nearby. [less ▲]

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See detailIntegrated approach for assessing climate change impacts on a regional chalky aquifer in Belgium
Goderniaux, Pascal ULg; Brouyère, Serge ULg; Dassargues, Alain ULg

in Changes in water resource systems: methodologies to maintain water security and ensure integrated management (2007)

An integrated hydrological model was developed in order to study the potential effects of climate change on groundwater resources. This model considers most hydrological processes in a physically ... [more ▼]

An integrated hydrological model was developed in order to study the potential effects of climate change on groundwater resources. This model considers most hydrological processes in a physically consistent way. More particularly, groundwater flows are modelled using a spatially distributed finite element approach. The river-aquifer interactions are explicitly taken into account in the model, as well as the spatial heterogeneity of the chalk geology characteristics. After a detailed calibration on the last 30 years and validation on recent periods, quantitative interpretations can be drawn from the ground¬water model results. Considering IPCC climate change scenarios, it appears that, on a multi-annual basis, most tested scenarios predict a decreasing trend in groundwater levels in the Geer Basin. These first results indicate that groundwater deficits may be expected in the future in Belgium. Moreover, at this stage of the study, this trend is computed for a very “optimistic” scenario, neglecting all other pressure changes on the groundwater resources (i.e. no change in land use and in pumping conditions). [less ▲]

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See detailIdentification of groundwater quality trends in a chalk aquifer threatened by intensive agriculture in Belgium
Batlle-Aguilar, Jordi; Orban, Philippe ULg; Dassargues, Alain ULg et al

in Hydrogeology Journal (2007), 15(8), 1615-1627

The European Union (EU) has adopted directives requiring that Member States take measures to reach a "good" chemical status of water resources by the year 2015 (Water Framework Directive: WFD). In order ... [more ▼]

The European Union (EU) has adopted directives requiring that Member States take measures to reach a "good" chemical status of water resources by the year 2015 (Water Framework Directive: WFD). In order to achieve the environmental objectives for groundwater, the identification and reversal of significant upward trends in pollutant concentrations are required. A very detailed dataset available for the Hesbaye chalk aquifer in Belgium is used to evaluate tools and to propose efficient methodologies for identifying and quantifying nitrate trends in groundwater. Results indicate that the parametric linear regression and the non-parametric Mann-Kendall tests are robust; however, the latter test seems more adequate as it does not require verification of the normality of the dataset and it provides calculated nitrate trends very comparable to those obtained using linear regression. From a hydrogeological point of view, results highlight a general upward trend in the whole groundwater basin. The extrapolation of the trend analysis results indicates that measures have to be taken urgently in order to avoid further major degradation of groundwater quality within the next 10-70 years. However, a good groundwater quality status cannot be expected in the Hesbaye aquifer for the 2015 EU WFD deadline. [less ▲]

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See detailA new single well tracer test: the Finite Volume Point Dilution Method. Theory, field application and model validation
Brouyère, Serge ULg; Batlle Aguilar, Jordi ULg; Goderniaux, Pascal ULg et al

in Calibration and Reliability in Groundwater Modelling: Credibility in Modelling (Pre-Published Proc. of ModelCARE’2007) (2007)

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See detailGroundwater - surface water interaction at the catchment scale - case studies in the Meuse basin
Bürger, Claudius M.; Watanabe, N.; Orban, Philippe ULg et al

in Davis, G. B.; Johntson, C. D.; Trefry, M. G. (Eds.) Groundwater Quality 2007 Securing Groundwater Quality in Urban and Industrial Environments (2007)

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See detailAssessing groundwater-surface water interaction and groundwater discharge in a contaminated site in an industrial, sub-urbanized area
Batlle-Aguilar, Jordi; Brouyère, Serge ULg

in Davis, G. B.; Johntson, C. D.; Trefry, M. G. (Eds.) Groundwater Quality 2007 Securing Groundwater Quality in Urban and Industrial Environments (2007)

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See detailLarge-scale groundwater modelling in the Walloon part of the Meuse basin: challenges and first steps
Brouyère, Serge ULg; Orban, Philippe ULg

Conference (2006, December 14)

This presentation described the first steps in the development of large (groundwater body) scale groundwater flow and transport modelling in the Meuse district

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See detailUpdate on field experiments and description of the groundwater flow and transport model for the Flémalle cokery site
Batlle-Aguilar, Jordi; Brouyère, Serge ULg

Report (2006)

This deliverable summarises all the hydrogeological experiments performed in the scope of the AquaTerra project by HGULg in the Flémalle test site. These experiments consisted in various hydraulic tests ... [more ▼]

This deliverable summarises all the hydrogeological experiments performed in the scope of the AquaTerra project by HGULg in the Flémalle test site. These experiments consisted in various hydraulic tests and tracer tests performed to quantify hydrodynamic and hydrodispersive properties of the alluvial gravel aquifer and to evaluate groundwater fluxes in the aquifer and at the aquifer-river interface. First steps in groundwater modelling are also presented. [less ▲]

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See detailReport on the tracer tests (experimental setup, results and interpretation)
Goderniaux, Pascal ULg; Brouyère, Serge ULg; Gutierrez, Alexis et al

Report (2006)

Tracer experiments were performed in the Brévilles test site in order to highlight vertical variations in groundwater fluxes related to vertical variations hydraulic conductivity, to estimate contaminant ... [more ▼]

Tracer experiments were performed in the Brévilles test site in order to highlight vertical variations in groundwater fluxes related to vertical variations hydraulic conductivity, to estimate contaminant travel time from several locations in the catchment to the springs and to identify transport processes affecting the fate of solutes in the saturated part of the aquifer. Following a first tracer experiment with uranine and sulforhodamine G in 2003, four tracer injections were performed in November 2005 in different piezometers, using uranine, sulforhodamine B, iodide and lithium. Tracer concentrations were monitored in the injection wells and at the basin outlet (spring and gauging station). Using the FVPDM method, concentration evolutions monitored in the injection wells allowed one to estimate local Darcy fluxes. At the basin outlet, only two tracers were recovered. Analyses of breakthrough curves confirm the stratification of the aquifer with more permeable levels in the lower part. They also suggest the probable occurrence of vertical interactions within the aquifer. [less ▲]

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See detailGroundwater flow and transport delivered for groundwater quality trend forecasting by TREND T2
Orban, Philippe ULg; Brouyère, Serge ULg

Report (2006)

In the framework of Workpackage R3 Meuse, the Hydrogeology Group of the University of Liège (HGULg) develops a groundwater flow and transport model for the Geer sub-catchment (tributary of the Meuse ... [more ▼]

In the framework of Workpackage R3 Meuse, the Hydrogeology Group of the University of Liège (HGULg) develops a groundwater flow and transport model for the Geer sub-catchment (tributary of the Meuse) (Figure 1, Deliverable R3.16 (Orban et al 2006)). In the scope of TREND T2, the model will be used to develop trend forecasting tools. The objective of the deliverable is to describe new concepts for large-scale transport modelling, more particularly a modelling approach, the Hybrid Finite Element Mixing Cell (HFEMC) developed by HGULg and implemented in the 3D simulator SUFT3D. First steps for the application to the Geer basin are also presented. [less ▲]

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