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

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingspeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationNear Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics
PublisherEuropean Association of Geoscientists and Engineers, EAGE
ISBN (Electronic)9789462820272
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division - Athens, Greece
Duration: 14 Sep 201418 Sep 2014

Publication series

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

Conference

Conference20th European Meeting of Environmental and Engineering Geophysics of EAGE's Near Surface Geoscience Division
Country/TerritoryGreece
CityAthens
Period14/09/1418/09/14

Programme Area

  • Programme Area 2: Water Resources

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