Time-domain spectral induced polarization and magnetics for mapping municipal solid waste deposits in Ghana

D. D. Wemegah, G. Fiandaca, E. Auken, A. Menyeh, S. K. Danuor

Publikation: Bidrag til bog/rapport/konferenceproceedingsKonferenceartikel i proceedingspeer review

3 Citationer (Scopus)

Abstrakt

Environmental pollution from solid waste landfilling is a serious risk for groundwater and downstream surface water, especially when landfilling is carried out unengineered, with no protective layer underneath the waste deposits. Most research in Ghana and in other developing countries on unengineered landfills depend almost exclusively on hydrochemical and geochemical analysis, which is not necessarily representative of the entire dumpsite catchment area. For this reason, integrated and cost effective geophysical methods, namely DC electrical resistivity, full waveform time-domain induced polarization and ground based magnetic measurements were employed to map and characterize four dumpsites in the Kumasi Metropolis, the seconds most populated city in Ghana. The results of one site, namely the decommissioned Ohwim waste dumpsite, are presented. The magnetic surveys helped in the mapping of the lateral extent of the waste deposit. The DC /full wave induced polarization tomography on the other hand mapped the vertical extent of the dumpsite and characterized the hosting geology. Furthermore, some regions were identified, where a pollution plume is likely to be present.

OriginalsprogEngelsk
TitelNear Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics
ForlagEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Elektronisk)9789462820272
DOI
StatusUdgivet - 2014
Udgivet eksterntJa
Begivenhed20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division - Athens, Grækenland
Varighed: 14 sep. 201418 sep. 2014

Publikationsserier

NavnNear Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics

Konference

Konference20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division
Land/OmrådeGrækenland
ByAthens
Periode14/09/1418/09/14

Programområde

  • Programområde 2: Vandressourcer

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