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Assessment of iInorganic pollutant contamination in groundwater using ground penetrating radar (GPR)

Authors:

Y.N.S. Wijewardana ,

University of Peradeniya, LK
About Y.N.S.
Postgraduate Institute of Agriculture
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L.W. Galagedara,

University of Peradeniya, LK
About L.W.
Department of Agricultural Engineering, Faculty of Agriculture
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M.I.M. Mowjood,

University of Peradeniya, LK
About M.I.M.
Department of Agricultural Engineering, Faculty of Agriculture
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K. Kawamoto

Saitama University, JP
About K.
Graduate School of Science and Engineering
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Abstract

The objective of this study was to evaluate the ground penetrating radar (GPR) wave responses to different levels of electrical conductivity (EC) in contaminant plumes. GPR wave simulations were carried out using GprMax2D and the simulated data were compared with GPR surveys on Lysimeter test. Trace amplitude of the reflected wave was plotted with two-way travel time and the 2D GPR images were developed to observe the variation of GPR responses with increasing EC. Simulation study showed the disappearance of the subsurface reflection and wave amplitude reaching zero at higher EC levels (when EC>0.28 S/m). In addition, when the EC level was higher, the plume thickness did not have a significant effect on the amplitude of the reflected wave. However, it was also found that reflected signal strength decreases with increasing plume thickness at a given EC level. Further research is needed to verify the results under heterogeneous aquifer conditions.

 

Tropical Agricultural Research Vol. 26 (4): 700 – 706 (2015)

How to Cite: Wijewardana, Y.N.S. et al., (2015). Assessment of iInorganic pollutant contamination in groundwater using ground penetrating radar (GPR). Tropical Agricultural Research. 26(4), pp.700–706. DOI: http://doi.org/10.4038/tar.v26i4.8132
Published on 20 Nov 2015.
Peer Reviewed

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