scholarly journals Groundwater prospecting using the dipole-dipole configuration for vertical electrical sounding: prediction of major aquifer depth in the Tolon-Kumbungu district of Northern Ghana

2019 ◽  
Vol 37 (2) ◽  
pp. 43-58
Author(s):  
A. N. Mumuni ◽  
J. S. Bayor
Keyword(s):  
Low Cost ◽  
Groundwater Potential ◽  
Groundwater Exploration ◽  
Vertical Electrical Sounding ◽  
Northern Ghana ◽  
Fracture Zones ◽  
Geophysical Investigation ◽  
Electrical Sounding ◽  
Dipole Configuration ◽  
Groundwater Prospecting

A geophysical investigation in groundwater prospecting, using the vertical electrical sounding (VES) method in resistivity surveying, was undertaken in the Tolon-Kumbungu district of Northern Ghana. The aim was to evaluate the effectiveness of the VES technique as a low-cost groundwater exploration method. Using the dipole-dipole VES technique, fracture zones that held good prospects for groundwater location were prospectively identified at 15 sites in the Gbullung and Wayamba communities of the district. In addition, retrospective VES data for 6 sites were obtained from previous studies. Geophysical VES data and available drill logs for 3 sites in the prospective study and all 6 sites in the retrospective study (a total of 9 sites) were then evaluated by the VES log-log graph interpretation method to establish a correlation with the groundwater characteristics of the study area. The analyses of the VES curves indicated the presence of anomalous fracture zones occurring within hard sandstone formations that had high groundwater potential. Weathered zones or fresh rock aquifers however did not show potential for groundwater. The dominant formations in the area were found to be thin-bedded sequences of sandstone, mudstone, shale, siltstone and their intercalations. Groundwater was confined to between the depths of 25.0 m and 40.0 m, with major aquifers occurring approximately between the depths of 34.0 m and 45.0 m. These predictions were confirmed by the available drill logs. Using the VES curve interpretation as a means of selecting promising water-bearing sites, 8 out of the 9 sites drilled were successful wells, recording water yields ranging from 14 L/min to 250 L/min, with an average yield of 87.3 L/min. The study thus showed that the dipole-dipole VES technique in groundwater prospecting is effective for the geology of the study area. Keywords: Tolon-Kumbungu; vertical electrical sounding; aquifer; groundwater; apparent resistivity 

scholarly journals Application of vertical electrical sounding (VES) for groundwater exploration in Onitsha and environs, Nigeria

2016 ◽  
Vol 4 (1) ◽  
pp. 1 ◽  
Author(s):  
Chika Osele ◽  
Ajana Onwuemesi ◽  
Emmanuel Anakwuba ◽  
Augustine Chinwuko
Keyword(s):  
Groundwater Potential ◽  
Groundwater Exploration ◽  
Vertical Electrical Sounding ◽  
Anambra State ◽  
Array Configuration ◽  
Sustainable Water Supply ◽  
Groundwater Yield ◽  
Electrical Sounding ◽  
Aquifer Characteristics ◽  
Water Saturated

<p>Surface geo-electrical survey using vertical electrical sounding (VES) method has been carried out in Onitsha and environs in southwestern part of Anambra state in order to determine the aquifer characteristics and groundwater potential of the area. Eleven vertical electrical soundings were carried out within the area of study using schlumberger array configuration. The interpretation of the vertical electrical sounding (VES) data revealed three to five geoelectric units with depth to the aquiferous layers ranging from 21 to 78m and resistivity of the saturated layers varying between 20 and 5600 ohm-m. Aquifer characteristics such as transmissivity and hydraulic conductivity calculated from interpretated VES result ranged from 2.55m2/day to 29.01m2/day and 0.03m/day to 1.37m/day respectively. This result shows that the water saturated sandstone units of the study area is hydrological good and capable of producing optimum groundwater yield. Furthermore, borehole could be drilled at depth between 40 and 110m in the area for sustainable water supply and hydrochemical study carried out to determine the water quality for domestics and municipal purposes.</p>

scholarly journals Groundwater Investigation using Sclumberger Vertical Electrical Sounding (VES) in Baturraden Geothermal Working Area (GWA), Central Java, Indonesia

2019 ◽  
Author(s):  
Katarina Evelyn Permata Herho ◽  
Sandy Hardian Susanto Herho
Keyword(s):  
Sustainable Development ◽  
Natural Resources ◽  
Low Cost ◽  
Geophysical Methods ◽  
Groundwater Potential ◽  
Vertical Electrical Sounding ◽  
Estimation Methods ◽  
Central Java ◽  
Electrical Sounding ◽  
Implementation Time

Goundwater investigations are increasingly becoming important for Indonesia. It is natural resources for sustainable development of a region. In this study, PT Sejahtera Alam Energy conducted an investigation of subsurface conditions, especially related to groundwater potential, carried out by a resistivity investigation method by means of Vertical Electrical Sounding (VES) or Geoelectricity in Embung Area, Baturaden Geothermal Project, Pandansari Village, Paguyangan Subdistrict, Brebes Regency. This method is one of the subsurface estimation methods that is considered suitable for water investigations as well as in terms of accuracy as well as in terms of low cost and faster implementation time compared to other geophysical methods.

scholarly journals Integrating Resistivity Techniques for Optimum Groundwater Exploration and Development within a Hotel Facility in Osogbo, Southwestern Nigeria

2021 ◽  
Vol 25 (2) ◽  
pp. 233-238
Author(s):  
A. Ojo ◽  
E. Babafemi ◽  
E. Faleye ◽  
O. Shado
Keyword(s):  
Groundwater Potential ◽  
Groundwater Exploration ◽  
Vertical Electrical Sounding ◽  
Computer Assisted ◽  
Curve Matching ◽  
Southwestern Nigeria ◽  
Low Resistivity ◽  
Lateritic Clay ◽  
Top Soil ◽  
Electrical Sounding

This work is an attempt to combine dipole-dipole profiling and vertical electrical sounding techniques of electrical resistivity methods to investigate the groundwater potential within the premises of a 3-star hotel facility in Osogbo, Nigeria by delineating the geoelectric layers, delineating the low resistivity layers, determining the lithologies and hence, delineating the groundwater bearing zones. The five vertical electrical sounding data were collected along two pre-surveyed dipole-dipole traverses at right angle to each other beside the fences of the premises using the ABEM SAS 300c terrameter. The observed data were interpreted quantitatively using curve matching and computer-assisted iteration method using the WinResist and Dipro software. The results of the inversion show that the lithology comprises of the top soil and an intermittent sequence of sand and lateritic clay having varying resistivity and thickness. The aquiferous layer was observed to be located at a depth of 23 m to 25 m due to the low resistivity and high thickness of the aquiferous layer. The result of the 2-D imaging closely correlates with the result of the vertical electrical sounding. Thus, combining these techniques in groundwater investigation has achieved similar result as the Werner technique and has reduced ambiguity and error in positioning for drilling. Keywords: Resistivity, Groundwater Exploration, Dipole-Dipole

A LOW-COST RESISTIVIMETER FOR USE IN PRACTICAL LECTURES OF APPLIED GEOPHYSICS

2016 ◽  
Vol 34 (1) ◽  
Author(s):  
Walter Sydney Dutra Folly ◽  
Aracy Sousa Senra
Keyword(s):  
Electrical Resistivity ◽  
Low Cost ◽  
Test Area ◽  
Vertical Electrical Sounding ◽  
Applied Geophysics ◽  
Resistivity Profile ◽  
Electrical Sounding ◽  
Good Agreement

ABSTRACT. We describe the construction and testing of a simple and efficient low-cost resistivimeter designed for use in practical classes in Applied Geophysics. The equipment was successfully tested in a vertical electrical sounding (VES) performed on sandy terrain within the campus of the Universidade Federal de Sergipe, Brazil. The VES results were in good agreement with the profiles obtained from two boreholes located approximately 500 m from the test area, clearly demonstrating the efficiency of the equipment and the adopted methodology.Keywords: vertical electrical sounding, electrical resistivity, resistivity profile. RESUMO. Neste artigo, descrevemos a construção e o teste de um resistivímetro de baixo custo, simples e eficiente, concebido para ser utilizado em aulas práticas de Geofísica Aplicada. O equipamento foi testado com a realização de uma sondagem elétrica vertical (SEV) em um terreno arenoso localizado no campus da Universidade Federal de Sergipe, Brasil. Os resultados obtidos nesta SEV apresentaram boa concordância com os perfis observados em dois poços de sondagem localizados a 500 m da área de teste, fato que comprovou a eficiência do equipamento e da metodologia adotada.Palavras-chave: sondagem elétrica vertical, resistividade elétrica, perfil de resistividade. 

scholarly journals GEOELECTRIC STUDY OF GROUNDWATER REPOSITORY IN PARTS OF AKWA IBOM STATE, SOUTHERN NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 99-102
Author(s):  
Johnson C. Ibuot ◽  
Moses M. M. Ekpa ◽  
Doris O. Okoroh ◽  
Aniefiok S. Akpan Emmanuel T. Omeje
Keyword(s):  
Hydraulic Conductivity ◽  
Groundwater Potential ◽  
Vertical Electrical Sounding ◽  
Protective Capacity ◽  
Longitudinal Conductance ◽  
Contour Maps ◽  
Transverse Resistance ◽  
Southern Nigeria ◽  
Electrical Sounding ◽  
Dar Zarrouk Parameters

Geoelectric survey employing Vertical Electrical Sounding (VES) was carried out in order to assess the groundwater repositories. A total of seven soundings were obtained with their layer resistivity, thickness and depth within the maximum electrode separation. The geoelectric parameters obtained were used to estimate the Dar-Zarrouk parameters (longitudinal conductance and transverse resistance), hydraulic conductivity and transmissivity. The result shows the aquifer resistivity ranging from 77.14 to 784.76 Ωm, with thickness ranging from 28.78 to 80.04 m. The longitudinal conductance have values ranging from 0.071 to 0.825 Ω-1 while the values of hydraulic conductivity and transmissivity range from 1.087 to 5.881 m/day and 60.180 to 374.031 𝑚2/day respectively. The contour maps generated show the variation of these parameters across the subsurface, and areas with poor protective capacity were delineated. The results also delineate the groundwater potential of the study area as moderate, while the corrosivity rating indicates non-corrosive and slightly corrosive.

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