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Udoinyang, I. E.
- Geophysical Assessment of Vulnerability of Surficial Aquifer in the Oil Producing Localities and Riverine Areas in the Coastal Region of Akwa Ibom State, Southern Nigeria
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Authors
Affiliations
1 Department of Physics, Geophysics Group, Akwa Ibom State University, Ikot Akpaden 520102, NG
2 Department of Physics, University of Uyo, Uyo, Akwa Ibom State 520101, NG
3 Rhema University Aba, Abia State 440001, NG
4 Department of Applied Geophysics Programme, Department of Physics, University of Calabar, Calabar 540222, NG
1 Department of Physics, Geophysics Group, Akwa Ibom State University, Ikot Akpaden 520102, NG
2 Department of Physics, University of Uyo, Uyo, Akwa Ibom State 520101, NG
3 Rhema University Aba, Abia State 440001, NG
4 Department of Applied Geophysics Programme, Department of Physics, University of Calabar, Calabar 540222, NG
Source
Current Science, Vol 113, No 03 (2017), Pagination: 430-438Abstract
1D resistivity sounding survey was combined with geological and geohydrochemical information in order to examine the aquifer vulnerability. Ten Schlumberger soundings were executed along one profile on the basis of proximity to functional boreholes. Ten samples of groundwater from nearby boreholes were checked for concentrations of significant trace element in the laboratory. The resistivity and geohydrochemical information were employed to examine the level of protection and the associated possible risk of the groundwater repository in the mapped area. The interpreted overburden parameters (resistivities and thicknesses) of water repositories were deployed to determine the integrated electrical conductivities (IEC) and susceptibility of hydrogeological units to surface contaminations. Based on results, Eket and Onna on the southern part of Nsit Ubium have IEC which reflect medium to poor protection capacity based on slightly protected and vulnerable protective layers above the underlain groundwater within the approximate depth range of 15-30 m. Nsit Ubium, the northern zone of the survey area, has a wide range of resistivity which creates windows or vulnerable pathways for percolation of waste pollutants from the surface which flow at the deeper layer. However, layers within 15-25 m depth provide good protection to their underlying aquifer based on IEC which are >1 Ω-1. Hydrochemical parameters also show higher values that are beyond the 2006 World Health Organization (WHO) standards. The integration of resistivity data and the hydrochemical data showed that the dominant topmost cover layers of the study areas are grossly vulnerable due to drainable pores in the formation.Keywords
Aquifer Vulnerability, Groundwater Protective Layer and IEC.Full Text
References
- Casas, M., Himi, Y., Diaz, Y. and Pinto, V., Assessing aquifer vulnerability to pollutants by electrical resistivity tomography at a nitrate vulnerable zone in NE Spain. Environ. Geol., 2008, 54, 515–520; doi:10.1007/s00254-007-0844-1.
- Kirsch, R., Groundwater Geophysics – A Tool for Hydrology, Springer Berlin Heidelberg, 2006, pp. 454–471.
- Kirsch, R., Sengpiel, K. P. and Voss, W., The use of electrical conductivity mapping in the definition of an aquifer vulnerability index. Near Surf. Geophys., 2003, 1(1), 13–19.
- Foster, S. S. D., Fundamental concepts in aquifer vulnerability, pollution risk and protection strategy: In TNO Committee on Hydrological Research, the Hague, Vulnerability of Soil and Groundwater Pollutants (eds van Duijvenbooden, W. and van Waegeningh, H. G.), Proc. Inf., 1987, vol. 38, pp. 69–86.
- Lobo-Ferrida, J. P., The European Union experience on groundwater vulnerability assessment and mapping. COASTIN, A Coastal Policy Res. Newsl., 1999, 1, 8–10.
- Younger, P. L., Groundwater Environment: An Introduction, Blackwell Publishing, Oxford, UK, 2007, Ch. 9.
- George, N. J., Akpan, A. E. and Ekanem, A. M., Assessment of textural variational pattern and electrical conduction of economic and accessible quaternary hydrolithofacies via geoelectric and laboratory methods in SE Nigeria: a case study of select locations in Akwa Ibom State. J. Geol. Soc. India, 2016, 88, 517–528.
- Obianwu, V. I., George, N. J. and Okiwelu, A. A., Preliminary geophysical deductions of lithological and hydrological conditions of the north-eastern sector of Akwa Ibom State, Southern Nigeria. Res. J. Appl. Sci., Eng. Technol., 2011, 3(8), 806–811.
- Antonio Celso de Oliveira Braga, Walter, M. F. and Joao, C. D., Resistivity (DC) method applied to aquifer protection studies. Rev. Bras. Geof., 2006, 24(4), 573–581.
- Henriet, J. P., Direct applications of the Dar-Zarrouk parameters in groundwater surveys. Geophys. Prospect., 1975, 24, 344–353.
- Short, R. C. and Stauble, A. J., Outline geology of Niger Delta. Am. Appl. Phys. Geol. Bull., 1967, 5, 761–779.
- George, N. J., Akpan, A. E., Obot, I. B. and Akpan Etuk, N. J., Geoelectrical investigation of erosion and flooding using the lithological composition of erosion and flood stricken roads in Ukanafun local government area of Akwa Ibom state. Disaster Adv., 2008, 1, 1–5.
- Edet, A. E., Groundwater quality assessment in parts of eastern Niger Delta. Environ. Geol., 1993, 22, 41–46.
- George, N. J., Akpan, A. O. and Umoh, A. A., Preliminary geophysical investigation to delineate the groundwater conductive zones in the coastal region of Akwa Ibom state, southern Nigeria, around the Gulf of Guinea. Int. J. Geosci., 2013, 4, 108–115; doi:10.4236/ijg.2013.4101.
- Ibanga, J. I. and George, N. J., Estimating geohydraulic parameters, protective strength, and corrosivity of hydrogeological units: a case study of ALSCON, Ikot Abasisouthern Nigeria. Arab. J. Geosci., 2016, 9(5), 1–16.
- George, N. J., Ibanga, J. I. and Ubom, A. I., Geoelectrohydrogeological indices of evidence of ingress of saline water into freshwater in parts of coastal aquifers of Ikot Abasi, southern Nigeria. J. African Earth Sci., 2015, 109, 37–46; http://dx.doi.org/10.1016/j.jafrearsci.2015.05.001.
- George, N., Obianwu, V. and Udofia, K., Estimation of distribution of aquifer hydraulic parameters in the southern part of Akwa Ibom State, southern Nigeria using surficial geophysical measurements. Int. Rev. Phys., 2011, 5(2).
- Obianwu, V., George, N. and Udofia, K., Estimation of hydraulic conductivity and effective porosity distribution using laboratory measurements on core samples in the Niger Delta, southern Nigeria. Int. Rev. Phys., 2011, 5(1), 1–12.
- George, N. J., Ubom, A. I. and Ibanga, J. I., Integrated approach to investigate the effect of leachate on groundwater around the Ikot Ekpene Dumpsite in Akwa Ibom State, Southeastern Nigeria. Int. J. Geophys., 2014, 2014, 1–10; http://dx.doi.org/10.1155/2014/174589.
- McNell, I. D., Electrical conductivity of soil rocks hydrol. Process, 2003, 17, 1197–1211.
- George, N. J., Atat, J. G., Umoren, E. B. and Etebong, I., Geophysical exploration to estimate the surface conductivity of residual argillaceous bands in the groundwater repositories of coastal sediments of EOLGA, Nigeria. NRIAG J. Astron. Geophys., 2017, http://dx.doi.org/10.1016/j.nrjag.2017.02.001.
- Zohdy, A. A. R., Eaton, G. P. and Mabey, D. R., Application of surface geophysics to groundwater investigations. US Geol. Surv. Technol. Water Res. Invest., 1974, D1, 166.
- Gemail, Kh. S., Ehistawy, A. M., El-Alfy, M., Ghoneim, M. F. and El-Bary, M. H., Abd; assessment of aquifer vulnerability to industrial waste water resistivity measurements. A case study along El-Gharbyia main drain, Nile Delta, Egypt. J. Appl. Geophys., 2011, 75, 140–150; doi:10.1016/j.jappgeo.2011.06.026.
- van Stempvoort, D., Ewert, L. and Wassenaar, L., Aquifer vulnerability index: a GIS compatible methods for groundwater vulnerability mapping. Can. Water Resour. J., 1992, 18, 25–37.
- Rottger, B., Kirsch, R., Scheer, W., Thomsen, S., Friborg, R. and Voss, W., Multi-frequency airborne EM surveys – a tool for aquifer vulnerability mapping. In Near Surface Geophysics (ed. Butler, D. K.), Tulsa, 2005, pp. 643–651.
- Obianwu, I. V., Chimezie, C. I., Akpan, A. E. and George, N. J., Surficial geophysical deduction of the geomaterial and aquifer distribution at Ngor-Okpala Local Government Area of Imo State, southeastern Nigeria. Cent. Eur. J. Geosci., 2011; doi:10.2478/s13533-011-0033-3.
- WHO, Guidelines for drinking water quality incorporating the first addendum to third edition. Recommendations, vol. 1, Geneva; http://www.whoint/water_sanitation_helth/dwq/gdwg3rev/en/index.html, 2006.
- Gogu, R. C., Hallet, V. and Dassargues, A., Comparison of aquifer vulnerability assessment techniques. Application to the Neblon river basin (Belgium). Environ. Geol., 2003, 44, 881–892.
- George, N. J., Emah, J. B. and Ekong, U. N., Geohydrodynamic properties of hydrogeological units in parts of Niger Delta, southern Nigeria. J. Afr. Earth Sci., 2015, 105, 55–63.
- Kalinski, R. J., Kelly, W. E., Bogardi, I. and Pesti, G., Electrical resistivity measurements to estimate travel through unsaturated groundwater protective layers. J. Appl. Geophys., 1993, 30, 161–173.
- RIGW/IWACO, Development and management of groundwater resources in the Nile valley and delta project: assessment of groundwater pollution from domestic, agricultural and industrial activities. Internal project report, RIGW/IWACO, Cairo, 1990.