No full text
Paper published in a book (Scientific congresses and symposiums)
Thermal tracer tests for characterizing a shallow alluvial aquifer
Wildemeersch, Samuel; Klepikova, Maria; Jamin, Pierre et al.
2014In Geophysical Research Abstracts
 

Files


Full Text
No document available.
Full Text Parts
posterEGU.pdf
Author postprint (798.58 kB)
Presented poster
Download
EGU2014-11169.pdf
Publisher postprint (35.29 kB)
Abstract
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Thermal tracer test; shallow aquifer; alluvial aquifer; low temperature geothermy; low enthalpy geothermy; heterogeneity
Abstract :
[en] Using heat as an active tracer in different types of aquifers is a topic of increasing interest [e.g. Vandenbohede et al.; 2008, Wagner et al., 2013; Read et al., 2013]. In this study, we investigate the potential interest of coupling heat and solute tracer tests for characterization of a shallow alluvial aquifer. A thermal tracer test was conducted in the alluvial aquifer of the Meuse River, Belgium. The tracing experiment consisted in simultaneously injecting heated water and a dye tracer in a piezometer and monitoring the evolution of groundwater temperature and tracer concentration in the recovery well and in nine monitoring wells located according to three transects with regards to the main groundwater flow direction. The breakthrough curves measured in the recovery well showed that heat transfer in the alluvial aquifer is slower and more dispersive than solute transport. Recovery is very low for heat while in the same time it is measured as relatively high for the solute tracer. This is due to the fact that heat diffusion is larger than molecular diffusion, implying that exchange between groundwater and the porous medium matrix is far more significant for heat than for solute tracers. Temperature and concentrations in the recovery well are then used for estimating the specific heat capacity with the energy balance approach and the estimated value is found to be consistent with those found in the literature. Temperature breakthrough curves in other piezometers are contrasted with what would be expected in an ideal layered aquifer. They reveal strongly unequal lateral and vertical components of the transport mechanisms. By means of a numerical heat transport model, we provide a preliminary interpretation of these temperature breakthrough curves. Furthermore, these data could be included in the calibration of a complex heat transfer model for estimating the entire set of heat transfer parameters and their spatial distribution by inverse modeling.
Research center :
Aquapôle - ULiège
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Wildemeersch, Samuel ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Klepikova, Maria ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Jamin, Pierre ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Orban, Philippe  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Hermans, Thomas ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Brouyère, Serge  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain  ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Thermal tracer tests for characterizing a shallow alluvial aquifer
Publication date :
28 April 2014
Event name :
EGU General Assembly 2014 HS8.2.5: Thermal and mechanical processes and energy storage in porous and fractured aquifers
Event organizer :
EGU
Event place :
Vienna, Austria
Event date :
28-30 April 2014
Audience :
International
Main work title :
Geophysical Research Abstracts
Collection name :
Vol. 16, EGU2014-11169
Funders :
ULiège - Université de Liège [BE]
Available on ORBi :
since 04 August 2014

Statistics


Number of views
70 (11 by ULiège)
Number of downloads
120 (7 by ULiège)

Bibliography


Similar publications



Contact ORBi