Subsoil Competence Characterization of the Akure Metropolis, Southwest Nigeria

Ojo, J. S.; Olorunfemi, M. O.; Akintorinwa, O. J.; Bayode, S.; Omosuyi, G.O.; Akinluyi, Francis Omowonuola

doi:10.9734/jgeesi/2015/15851

Cited by 17 publications

(21 citation statements)

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“…The metropolis is located on a gently undulating terrain surrounded by isolated hills and inselbergs (Ojo et al, 2014). Topographic elevations ( Figure 2) vary between 260 and 470 m above sea level (Ojo et al, 2014). The major river in Akure is river Ala and its tributaries aquifers (Aniya & Shoeneick, 1992).…”

Section: Description Of the Study Areamentioning

confidence: 99%

“…The major river in Akure is river Ala and its tributaries aquifers (Aniya & Shoeneick, 1992). The weathered layer aquifer is derived from chemical alteration processes while the fractured basement aquifer system is as a result of tectonic activities (Ojo et al, 2014). The weathered layer aquifer may occur singly or in combination with the fractured aquifer (Bayode et al, 2006).…”

Section: Description Of the Study Areamentioning

confidence: 99%

“…The weathered layer aquifer may occur singly or in combination with the fractured aquifer (Bayode et al, 2006). The direct exposure of the uppermost part of the vadose zone of the weathered layer aquifer system makes it vulnerable to surface/near surface pollutants such as leachate from waste dump sites and flooding (Ojo et al, 2014).…”

Section: Description Of the Study Areamentioning

confidence: 99%

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Groundwater Evolution, Hydrochemical Facies and Quality Evaluation for Irrigation Use in Akure, Ondo State, Nigeria

Falowo¹,

Amodu²,

Oluwasegunfunmi³

et al. 2019

GEP

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Hydrochemical facies, groundwater evolution, and physicochemical reactions between soil or rock and water are of considerable importance when evaluating or predicting the nature of anthropogenic impacts on groundwater quality. In this respect a total of 67 ground water samples were collected randomly in Akure, southwestern, Nigeria from hand pump/dug wells and analyzed for major cations and anions. The domination of cations and anions was in the order of Ca 2+ >

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Section: Description Of the Study Areamentioning

confidence: 99%

Section: Description Of the Study Areamentioning

confidence: 99%

Section: Description Of the Study Areamentioning

confidence: 99%

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Groundwater Evolution, Hydrochemical Facies and Quality Evaluation for Irrigation Use in Akure, Ondo State, Nigeria

Falowo¹,

Amodu²,

Oluwasegunfunmi³

et al. 2019

GEP

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“… Ekinci and Demirci (2008) , Adelusi et al. (2013) , Bayode (2013) , Ojo et al. (2015) , Ibironke et al.…”

Section: Introductionmentioning

confidence: 99%

“…Eighteen single azimuth VES, in connection with Very Low Frequency EM and Horizontal profiling, were used by Bayode (2013) for the hydro-geophysical investigation for deep fracture columns at the Federal Housing Estate, Akure. Ojo et al. (2015) analyzed a huge number (513 to be precise) of single azimuth VES data to characterize subsoil competence of the Akure Metropolis.…”

Section: Introductionmentioning

confidence: 99%

Panoramic azimuthal Schlumberger Vertical Electrical Sounding for fracture orientation and anisotropy quantification

Ogunbo

Mamukuyomi

Adepoju

et al. 2018

Heliyon

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Vertical electrical sounding (VES) data acquired with the Schlumberger configuration is popularly used to image the electrical resistivity variation with depth at a single azimuth. Apart from the random subjective choice of the single azimuthal direction by the field geophysicists, important hydrological information such as fracture orientation and anisotropic coefficients needed for understanding resultant groundwater flow direction are by design lost in the process. Panoramic (0°–360°) azimuthal VES data were acquired at two data points at the Federal University of Technology, Akure (FUTA) at angular step of 15°, making a total of 24 data sets per data point. Each azimuthal VES data was inverted using equal number of layers in order to confirm the presence of anisotropy, quantify the anisotropic coefficients and image the orientation of fracture at a particular depth. Little to large apparent resistivity data and model suggested the presence of anisotropy which otherwise would have been lost in a single azimuthal survey. Elliptical fit of each layer azimuthal inverted resistivity was used to quantify the fracture orientation and coefficient of anisotropy with depth. From the results, it is established that anisotropy is present only at the near-surface: and the anisotropic coefficient increases from the surface to 7m. The result also showed the presence of an isotropic unit from 8m to the fresh basement. In agreement with existing published results on the geology of the area, the majority of the fractures trend North West and North East at stations 1 and 2 respectively. We hope that the methodology will foster detailed 3D panoramic imaging of the fracture network within and outside the study location, which will help in designing better groundwater management scheme and understanding resultant groundwater flow direction for contaminant and pollutant prevention and for flood control.

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Subsoil Foundation Support Assessment in Owo Area of Ondo State, Southwestern Nigeria

Imeokparia

Falowo

2019

Geotech Geol Eng

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Subsoil Competence Characterization of the Akure Metropolis, Southwest Nigeria

Cited by 17 publications

References 0 publications

Groundwater Evolution, Hydrochemical Facies and Quality Evaluation for Irrigation Use in Akure, Ondo State, Nigeria

Groundwater Evolution, Hydrochemical Facies and Quality Evaluation for Irrigation Use in Akure, Ondo State, Nigeria

Panoramic azimuthal Schlumberger Vertical Electrical Sounding for fracture orientation and anisotropy quantification

Subsoil Foundation Support Assessment in Owo Area of Ondo State, Southwestern Nigeria

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