Aquifer boundaries explored by geoelectrical measurements in the coastal plain of Yemen: A case of equivalence

Overmeeren, R.A. van

doi:10.1190/1.1442575

Cited by 94 publications

(38 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It then compares the theoretical curve with the field data curve. Since quantitative interpretation of geoelectrical sounding data is usually difficult due to the inherent problem of equivalence [33], borehole data were used to constrain all depth and minimise the choice of equivalent models by fixing layer thicknesses and depths while allowing the resistivities to vary [34]. The total number of observed minima and maxima on the smoothened VES curves was usually used as the starting number of layers (or models) over a halfspace for the data inversion exercise.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Economically Accessible Groundwater Reserve and Its Protective Capacity in Eastern Obolo Local Government Area of Akwa Ibom State, Nigeria, Using Electrical Resistivity Method

2014

View full text Add to dashboard Cite

The application of geophysical method employing vertical electrical sounding (VES) method in combination with laboratory analysis of aquifer sediments has been used to access the economically accessible groundwater reserve and its protective capacity in some parts of Eastern Obolo Local Government area, the eastern region of the Nigerian Niger Delta. Schlumberger electrode configuration was used to sound twelve VES to occupy the areas that have borehole locations and accessibility for the spread of current electrodes to at least 1000 m. Based on the results, the safe and economic aquifer potential has groundwater reserve of about 168480558±18532861 m3. The desired aquifer thickness and its depth of burial have average value of 52.02 m and 73.14 m, respectively. The area has a fair protective capacity. This is indicated by 58.33% weak, 16.67% moderate, and 25% good protective capacity for the area. This study was done in one of the oil cities, where contaminated Salt River water is used as the major source of water for domestic uses and it is believed that the settlers will appropriate this result and sue for safe groundwater at the indicated depths.

show abstract

Section: Resultsmentioning

confidence: 99%

Assessment of Economically Accessible Groundwater Reserve and Its Protective Capacity in Eastern Obolo Local Government Area of Akwa Ibom State, Nigeria, Using Electrical Resistivity Method

2014

View full text Add to dashboard Cite

show abstract

“…The Schlumberger resistivity method has over the years proved useful in delineation of groundwater and aquifer characteristics due to its better depth interpretation. Previous investigators such as Van Overmeeren, (1989), McNeil, (1990, and Atakpo and Akpoborie, (2008), have buttressed this. However, it is possible for different rock types to have the same range of resistivity (Ezomo, and Akujieze, 2010), this usually make electrical resistivity data ambiguous to interpret.…”

Section: Introductionmentioning

confidence: 90%

Aspects of Geophysical Exploration for Groundwater Using Vertical Electrical Sounding (VES) in Parts of University of Benin, Benin City, Edo State

Idehai¹,

Egai²

2014

Journal of Applied Sciences and Environmental Management

View full text Add to dashboard Cite

ABSTRACT.: A geophysical survey using vertical electrical sounding (VES) was undertaken within the University of Benin (Ugbowo Campus) in an attempt to ascertain aspects of the hydrogeological parameters for groundwater exploitation. Six (6) vertical electrical soundings with electrode spacing of 215m AB/2 were occupied along the traverse, with the aid of ABEM SAS 1000 Terrameter set. The data were interpreted using the IXID and 3-D fieldmap computer softwares. The subsurface stratigraphy is as follows; (262.43-784.7Ωm); topsoil, (205.65-3666.4Ωm); wet laterite, (44.017-2201Ωm); anomalous soil, (601.03-1450Ωm); clayed/silty sand, (2712.38-11741Ωm); dry sand, and (2909.7-12423Ωm); as aquifer. The results reveal depth to water table ranges of 31.2-65.5m. The range of values of minimum thickness of the aquifer across the VES is from 45-63m. VES 3 is the shallowest and may be the cheapest to drill and install a borehole. VES 6 with a inferred depth of 63-65.5m, will probably be the best area to site a borehole in spite of the expected cost imperatives. The area shows slight spatial variations and plausibly attests to natural inhomogeneity, anthropogenic interplay in the course of the development of the area via construction, and very marginal susceptibility to contamination from the health centre and hostels within the study area. Furthermore, the results conformed to those of previous writers who described the aquifer as sandy and highly prolific. © JASEM

show abstract

“…Generally, the geological setting of El-Fayoum has been addressed in details by many authors (Said 1962;Tamer 1968;Swedan 1986). However, in the following section, we will describe briefly the subsurface geology that may help for geophysical data interpretation in the study area.…”

Section: Geological Contextmentioning

confidence: 99%

Integrated geoelectrical survey for groundwater and shallow subsurface evaluation: case study at Siliyin spring, El-Fayoum, Egypt

Metwaly

El-Qady

Massoud

et al. 2009

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Siliyin spring is one of the many natural fresh water springs in the Western Desert of Egypt. It is located at the central part of El-Fayoum Delta, which is a potential place for urban developments and touristic activities. Integrated geoelectrical survey was conducted to facilitate mapping the groundwater resources and the shallow subsurface structures in the area. Twenty-eight transient electromagnetic (TEM) soundings, three vertical electrical soundings (VES) and three electrical resistivity tomography (ERT) profiles were carried out around the Siliyin spring location. The dense cultivation, the rugged topography and the existence of infra structure in the area hindered acquiring more data. The TEM data were inverted jointly with the VES and ERT, and constrained by available geological information. Based on the inversion results, a set of geoelectrical cross-sections have been constructed. The shallow sand to sandy clay layer that forms the shallow aquifer has been completely mapped underneath and around the spring area. Flowing of water from the Siliyin spring is interconnected with the lateral lithological changes from clay to sand soil. Exploration of the extension of Siliyin spring zone is recommended. The interpretation emphasizes the importance of integrating the geoelectrical survey with the available geological information to obtain useful, cheap and fast lithological and structural subsurface information.

show abstract

Aquifer boundaries explored by geoelectrical measurements in the coastal plain of Yemen: A case of equivalence

Cited by 94 publications

References 1 publication

Assessment of Economically Accessible Groundwater Reserve and Its Protective Capacity in Eastern Obolo Local Government Area of Akwa Ibom State, Nigeria, Using Electrical Resistivity Method

Assessment of Economically Accessible Groundwater Reserve and Its Protective Capacity in Eastern Obolo Local Government Area of Akwa Ibom State, Nigeria, Using Electrical Resistivity Method

Aspects of Geophysical Exploration for Groundwater Using Vertical Electrical Sounding (VES) in Parts of University of Benin, Benin City, Edo State

Integrated geoelectrical survey for groundwater and shallow subsurface evaluation: case study at Siliyin spring, El-Fayoum, Egypt

Contact Info

Product

Resources

About