International Journal of
Water Resources and Environmental Engineering

  • Abbreviation: Int. J. Water Res. Environ. Eng.
  • Language: English
  • ISSN: 2141-6613
  • DOI: 10.5897/IJWREE
  • Start Year: 2009
  • Published Articles: 303

Article in Press

Mapping conductive zones using very low frequency electromagnetic (VLF-EM) method around Capitol Landfill Dumpsite in Benin City, Nigeria

I. Ikhifa, M. N. Umego and G. N. Egwuonwu

In this paper the main results from the implementation and interpretation of the geophysical survey using very low frequency electromagnetic (VLF-EM) method carried out in Capitol solid waste disposal site (Southern Nigeria) are presented. The objective of the study was to monitor the effect of suspected leachate contamination in Capitol solid waste disposal site. The survey comprised ten VLF-EM traverses in North-South direction across a solid waste disposal site. The Fraser and Karous-Hjelt filters were used in the interpretation of the VLF-EM field data. The VLF-EM method was able to map the orientation, areal distribution and delineate the conductive zones within the solid waste disposal site. The results of the current density calculated from the pseudosections indicate the presences of conductive zone up to a depth of 20 m in the study area. From the VLF-EM Fraser Filter map, there are good presences of oval shaped conductive bodies around the North-Eastern and South-Eastern parts of the study area.

Keywords: Very low frequency, electromagnetic, conductive zones, pseudosections.