Reference : Interpretation of a tracer test at Brévilles after 2 years of monitoring

	Document type :	Reports : External report
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography Engineering, computing & technology : Geological, petroleum & mining engineering
	To cite this reference:	http://hdl.handle.net/2268/78495

Title :	Interpretation of a tracer test at Brévilles after 2 years of monitoring
Language :	English
Author, co-author :	Goderniaux, Pascal [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
	Gutierrez, Alexis [BRGM Orléans (France) > > Service Eau > >]
	Brouyère, Serge [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
Publication date :	Mar-2008
Page number :	29
Report number :	Deliverable H2.7 FP6 Integrated Project AquaTerra (n° 505428 GOCE)
Keywords :	[en] Brévilles spring ; tracer experiment ; tracer test modelling ; FVPDM
Abstract :	[en] To understand and predict the behaviour and transfer of diffuse contamination, a small catchment is intensively studied in the vicinity of Paris. A multi tracer test involving a new technique, the FVPDM method (Finite Volume Point Dilution Method - Brouyère et al., 2008) has been performed in natural flow conditions. Injections of four different tracers (uranine, sulforhodamine B, lithium chloride and potassium iodide) took place in four piezometers involving different areas of the aquifer and different depth. This tracer test follows a former test briefly described. A particularly long monitoring (Nov-2005 to Feb-2008) demonstrates the existence of several transport velocities within the sandy layer, which seems linked to the decrease of hydraulic conductivity with depth. Absence of recovery of two tracers confirms the results of the former test and identifies spatial heterogeneities probably due to the geological structure. The new insight and parameter quantification brought by interpretation of these tests contributes to a better characterization of the saturated zone and shall be exploited through modelling for transport predictions of pesticides.
Research units :	Aquapôle - AQUAPOLE
Funders :	Commission européenne : Direction générale de la Recherche
Name of the research project :	AquaTerra - Integrated Modelling of the river-sediment-soil-groundwater system; advanced tools for the management of catchment areas and river basins in the context of global change
Conducted at the request of :	Commission européenne - Direction de la Recherche
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/78495
Mentions required by the publisher for OA :	FP6 Integrated Project AquaTerra (n° 505428 GOCE) co-funded by the European Commission within the Sixth Framework Programme (2002-2006) undere the thematic priority: Sustainable development, global change and ecosystems

	File(s) associated to this reference
	Fulltext file(s): File Commentary Version Size Access Open access H2.7.pdf Publisher postprint 1.61 MB View/Open

All documents in ORBi are protected by a user license.

 

© ULg Library Network |  Feedback |  ORBi legal notices

Dspace v1.5