Article (Scientific journals)
Assessment of multiple geophysical techniques for the characterization of municipal waste deposit sites
Dumont, Gaël; Robert, Tanguy; Marck, Nicolas et al.
2017In Journal of Applied Geophysics, 145, p. 74-83
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Keywords :
Biodegradation; Geological surveys; Geophysics; Land fill; Moisture; Moisture determination; Surface waves; Surveys; Electrical resistivity tomography; Enhanced biodegradation; Geophysical methods; Geophysical surveys; Geophysical techniques; Material compositions; Multichannel analysis; Site rehabilitation; Deposits
Abstract :
[en] In this study, we tested the ability of geophysical methods to characterize a large technical landfill installed in a former sand quarry. The geophysical surveys specifically aimed at delimitating the deposit site horizontal extension, at estimating its thickness and at characterizing the waste material composition (the moisture content in the present case). The site delimitation was conducted with electromagnetic (in-phase and out-of-phase) and magnetic (vertical gradient and total field) methods that clearly showed the transition between the waste deposit and the host formation. Regarding waste deposit thickness evaluation, electrical resistivity tomography appeared inefficient on this particularly thick deposit site. Thus, we propose a combination of horizontal to vertical noise spectral ratio (HVNSR) and multichannel analysis of the surface waves (MASW), which successfully determined the approximate waste deposit thickness in our test landfill. However, ERT appeared to be an appropriate tool to characterize the moisture content of the waste, which is of prior information for the organic waste biodegradation process. The global multi-scale and multi-method geophysical survey offers precious information for site rehabilitation studies, water content mitigation processes for enhanced biodegradation or landfill mining operation planning. © 2017 Elsevier B.V.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Dumont, Gaël ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Robert, Tanguy ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Marck, Nicolas;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée > , Now at BOVA ENVIRO +, Route de Louvain-la-Neuve 4 (bte 15), Namur, 5001, Belgium
Nguyen, Frédéric ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Language :
English
Title :
Assessment of multiple geophysical techniques for the characterization of municipal waste deposit sites
Publication date :
October 2017
Journal title :
Journal of Applied Geophysics
ISSN :
0926-9851
Publisher :
Elsevier B.V.
Volume :
145
Pages :
74-83
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
MINERVE
Available on ORBi :
since 30 April 2019

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