Estimation of aquifer hydraulic parameters from geoelectrical method—a case study of Yenagoa and environs, Southern Nigeria

Okiongbo, K. S.; Mebine, Promise

doi:10.1007/s12517-014-1671-9

Cited by 11 publications

(7 citation statements)

References 16 publications

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“…Geographically, Yenagoa is situated within the coastal area of the Niger Delta sedimentary basin (Figure 1). The ground surface is relatively flat and the sloping is gentle seawards (Okiongbo and Mebine 2015). Its mean elevation is about 8 m above mean sea level (Akpokodje and Etu-Efeotor 1987).…”

Section: Location and Geological Setting Of The Study Areamentioning

confidence: 99%

Determination of elastic moduli and bearing capacity of sediments using geophysical and cone penetration test techniques in Yenagoa, Southern Nigeria

Bayo

Okiongbo

Sorronadi-Ononiwu

2021

NRIAG Journal of Astronomy and Geophysics

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In order to quantify the P-and S-wave velocities, dynamic elastic moduli and bearing capacity of shallow alluvial sediments, seismic refraction and cone penetration test (CPTu) soundings were carried out in two sites in Yenagoa. The seismic refraction data was analysed using the intercept-time technique to obtain the seismic velocities which were subsequently used to estimate the dynamic elastic moduli. The relevant CPTu data were emplaced into an established empirical equation to determine the shear wave velocity (V s ), with which the compressional wave velocity (V p ) was estimated. Combing the compressional and shear wave velocities, the dynamic elastic moduli of the shallow sediments were determined within the depth range of 0.5-8.0 m. On comparison, it was observed that the average values of V p and V s from the two methods are fairly in agreement. Significant difference in the average values was only observed in the dynamic elastic moduli. Correlation of the V s -wave and the dynamic moduli from the CPTu data show linear relationship between S-wave velocity and the dynamic elastic moduli with correlation coefficients (R 2 ) greater than 0.9 in all cases. These elastic moduli values can be used for the design of foundation of structures, site response and settlement analysis.

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Section: Location and Geological Setting Of The Study Areamentioning

confidence: 99%

Determination of elastic moduli and bearing capacity of sediments using geophysical and cone penetration test techniques in Yenagoa, Southern Nigeria

Bayo

Okiongbo

Sorronadi-Ononiwu

2021

NRIAG Journal of Astronomy and Geophysics

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“…9 further show how the parameters are related. From the pictorial display, the aquifer formation bulk resistivity q b , is proportional to the aquifer pore water resistivity q w and the resistivity formation factor and porosity show inverse spatial distribution (Okiongbo and Mebine, 2014). Fig.…”

Section: Resultsmentioning

confidence: 96%

Geohydrodynamic properties of hydrogeological units in parts of Niger Delta, southern Nigeria

George

Emah

Ekong

2015

Journal of African Earth Sciences

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“…Yenagoa is situated within the coastal area of the Niger Delta sedimentary basin (Figure 1). There are no pronounced undulations on the surface but gently slopes is towards the sea [25]. Its mean elevation is about 8m above mean sea level [26].…”

Section: Location and Geological Setting Of The Study Areamentioning

confidence: 91%

Correlation of Apparent Electrical Resistivity with Elastic Moduli and Soil Shear Strength Parameters in Yenagoa, Southern Nigeria

Ks¹,

Rb²,

Akpofure³

2020

ACET

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Many published correlations between soil electrical resistivity with soil strength parameters are limited to site-specific qualitative correlations between geoelectrical and geotechnical data. The absence of site-specific quantitative transforms for resistivity and various geotechnical test results such as CPTu do not allow the prediction of geotechnical parameters via geoelectric data. Thus, establishing a correlation between soil electrical resistivity and soil strength parameters, which can be applied in shallow soil strength prediction, would be a significant advance for engineering practice. In this study, field tests consisting of vertical electrical sounding (VES) and CPTu data acquired at the same location were analyzed and correlated to develop empirical models. At selected depths, we collected the apparent resistivity variation with depth and correlated with the soil strength parameters such as shear modulus, Young's modulus, bulk modulus, undrained shear strength and friction angle derived from the CPTu data at the same location. Least square regression method was used to evaluate the relation between apparent resistivity and the different soil strength parameters. Linear curve fitting approximations were applied. The results show that apparent electrical resistivity has a good correlation with soil strength parameters with coefficient of correlation ranging between 0.4-0.7. The empirical models were validated by predicting the soil strength parameters. The measured and predicted values show a good correlation and thus affirm the applicability of the proposed empirical models.

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Estimation of aquifer hydraulic parameters from geoelectrical method—a case study of Yenagoa and environs, Southern Nigeria

Cited by 11 publications

References 16 publications

Determination of elastic moduli and bearing capacity of sediments using geophysical and cone penetration test techniques in Yenagoa, Southern Nigeria

Determination of elastic moduli and bearing capacity of sediments using geophysical and cone penetration test techniques in Yenagoa, Southern Nigeria

Geohydrodynamic properties of hydrogeological units in parts of Niger Delta, southern Nigeria

Correlation of Apparent Electrical Resistivity with Elastic Moduli and Soil Shear Strength Parameters in Yenagoa, Southern Nigeria

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