International Journal of Environmental Planning and Management
Articles Information
International Journal of Environmental Planning and Management, Vol.1, No.2, Jun. 2015, Pub. Date: Jun. 10, 2015
Mapping Flood Prone Areas in Ekpoma, Edo State, Nigeria Using Electromagnetic Profiling and Electrical Resistivity Soundings
Pages: 69-74 Views: 3079 Downloads: 1735
Authors
[01] Aigbedion Isaac, Department of Physics, Geophysics Faculty of Natural Sciences Ambrose Alli University, Ekpoma, Nigeria.
Abstract
This study exploits the integrated approach of using the electromagnetic profiling and electrical resistivity soundings in flood management with the goal of mapping areas vulnerable to flood in Ekpoma- Edo State- Nigeria. Profiles length of 900m, 200m, 140m and 500m were covered using the Abem Wadi (West-East Orientation) at a measuring interval of 20m. The electromagnetic data were plotted against the station position, and the plots were found to exhibit positive peak and negative trough. The Schlumberger vertical electrical sounding was conducted in the conductive zones prone to flooding. Resistivity values were obtained by taking readings using the Ohmaga resistivity meter. The readings were further processed accordingly using Resist software meter. The study reveals that subsurface geophysical method is very useful for flood control.
Keywords
Flooding, Clay/Shale, VLF- Electromagnetic, Conductive, Sandstone
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