Application of Schlumberger array of vertical electric sounding to detection of water bearing formations

Ezomo, F.O.; Ifedili, S O

doi:10.4314/jonamp.v8i1.40008

Cited by 3 publications

(5 citation statements)

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“…It is a versatile geophysical tool in hydrogeology, besides its application in mineral exploration, engineering, environmental Geophysics and in delineating lithofacies. This method was described by Ezomo and Ifedili (2006), Oyedele (2008) and Ezomo (2012) as simple, most widely used, very efficient and cost effective. Also, an excellent example of the use of this technique was shown by Reynold (1997) in a survey for a rural water supply in Northern Nigeria where the failure rate of boreholes sank at that time was over 82% before the Vertical Electrical Soundings were used.…”

Section: Introductionmentioning

confidence: 99%

“…Interpreted VES results.The results of VES data analysed showed the thickness and depth of various geoelectric layers. The Table1and 2, and figures(3)(4)(5)(6)(7)(8) revealed the lithology, thickness, and depth of various geoelectric layers beneath VES points with topsoil having resistivity values ranging from 7.8Ωm to 231.3Ωm and thickness between 0.6m to 1.0m. The second geoelectric layer delineated as clayey formation in all geoelectric sections beneath VES points except VES 1 where it occurred in the fourth layer and occurred in the second times in the fourth layer of VES 2, VES 5, VES 6, and VES 8.…”

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confidence: 99%

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Groundwater Exploration of Federal College of Education (Technical) Akoka Lagos Nigeria Community Using Schlumberger Array

Abel,

Fatimah,

Peter

2023

International Journal of Scientific Advances

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A total of thirteen (13) Vertical Electrical Soundings (VES) using Schlumberger array were carried out within Federal College of Education (Tech) Akoka, Yaba, Lagos State, Southwestern, Nigeria. This area is between Longitude N06º31’10” and Longitude N06º31’30” and Latitude E3º22′ 55″ and Latitude E3º23′ 5.3″. This study was necessary because of the roles water plays in human life, the demand for it and the failure of boreholes in some locations within the study area. Resistivity method of geophysical survey was applied to determine good locations for groundwater prospecting using PASI Terrameter and its accessories. The resistivity values obtained were plotted on a log-log graph scale for curve matching and computer iteration was carried out using WinResist software to generate computer models for the curve types. The Geoelectric sections beneath each VES point revealed about four to five geoelectric layers, comprising topsoil, sandy-clay, clayey-sand, clay, peat, and sandy formation. Analysis of geophysical investigation showed that sand at the third geoelectric layer in VES 1 and VES 11 with a resistivity value of 143.3 Ωm and 240 Ωm constitute aquifer units where groundwater can be tapped. The shallow groundwater could be tapped at depth interval 6.6-20.2 m in VES 1 and 25.2m and above in VES 11. The failure of borehole located within the female hostel was due to overburden of this shallow aquifer due to population explosion. The recommendation was made that groundwater development through borehole drilling of depth not less than 150m is needed for high groundwater yield based on available information from nearby well log since wider spread for the deep investigation is not possible within the study area.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Groundwater Exploration of Federal College of Education (Technical) Akoka Lagos Nigeria Community Using Schlumberger Array

Abel,

Fatimah,

Peter

2023

International Journal of Scientific Advances

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“…Nigeria whose economy is growing as a developing nation is blessed with abundant natural resources e.g. oil, gas, rubber, coal, tin, clay, etc, but currently depends heavily on finished products imported into the country [1, 2,3]. These include refined oil, ceramics floor tiles, fabrics, shoes, pharmaceutical products, the list of which is endless.…”

Section: Introductionmentioning

confidence: 99%

Vertical Electrical Sounding as a Tool for Estimating Thickness of Clay Deposit in Delta North District, Nigeria

Ezomo

2011

AMR

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Geophysical survey based on “Schlumberger” array of vertical electrical sounding (VES) was carried out to study the quantity of clay deposits in Delta North District, Nigeria. Obviously, the quantity of clay deposit depends on its thickness. Previous researchers did not work in this area primarily to search for the clay deposit. The need to prospect or search for clay deposits in this area became inevitable so as to solve the problem of youth restiveness in the area by way of setting up industries in Delta North district that rely on clay for manufacturing purposes. Ten (10) VES, uniformly distributed in six different stations in Agbor were carried out using six (06) points per decade with maximum current electrode spacing of 928.0m. The software IP12WIN utilizing computer iteration was used for interpretation of apparent resistivity data. The result of the resistivity survey showed that clay and clayey soil (clay mixed with other rock types) were present. The depths and thicknesses of each clay formation were then ascertained. Depths to probable clay formations varied from 0.5m to 90m while the thicknesses varied from 0.95m to 7.00m.

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“…VES method gives detailed information of subsurface geology as explicitly reported by [9][10] and reemphasized by [11]. This method is regularly used to solve a wide variety of groundwater problems.…”

Section: Introductionmentioning

confidence: 99%

“…In this case shallow sources of groundwater, in the form of hand-dug wells are at high risk of contamination. With growing informal settlements, enough and good quality of water -161 -DOI: 10.5963/IJEP0601018 becomes obvious. For that reason the use of geoelectrical method for groundwater exploration and water quality evaluations has increased over the last few years.…”

Section: Introductionmentioning

confidence: 99%

Application of Geoelectrical Resistivity Method to the Assessment of Groundwater Pollution: A case Study of Onibu-Eja Active Open Dumpsite, Osogbo, Southwestern Nigeria

Ugwu¹,

Simon²,

Ranganai³

et al. 2016

IJEP

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Application of Schlumberger array of vertical electric sounding to detection of water bearing formations

Cited by 3 publications

References 0 publications

Groundwater Exploration of Federal College of Education (Technical) Akoka Lagos Nigeria Community Using Schlumberger Array

Groundwater Exploration of Federal College of Education (Technical) Akoka Lagos Nigeria Community Using Schlumberger Array

Vertical Electrical Sounding as a Tool for Estimating Thickness of Clay Deposit in Delta North District, Nigeria

Application of Geoelectrical Resistivity Method to the Assessment of Groundwater Pollution: A case Study of Onibu-Eja Active Open Dumpsite, Osogbo, Southwestern Nigeria

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