Volumetric estimation of groundwater reserve in Akwa Ibom State University main campus, southern Nigeria using surficial resistivity measurements DOI Creative Commons
Aniekan M. Ekanem

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Май 21, 2024

Abstract Recent changes in climatic conditions and the resulting demands for potable water call a thorough understanding of groundwater resources. In this research, usability electrical resistivity technique volumetric estimation reserve is demonstrated. Sixteen (16) vertical soundings were made at predetermined locations Akwa Ibom State University campus, southern Nigeria with main aim delineating hydrostratigraphic units estimating area. Three to four geoelectric layers comprising poorly sorted continental sands minor clay intercalations have been identified study site. Groundwater extraction area takes place second third layers, based on location, depths ranging from 0.7 84.7 m. The aquifer system shown mean effective porosity 0.32, specific yield 0.23 retention 0.09. total volume estimated be 1.65 x 108 m3 while 5.3 107 m3. usable releasable by during pumping 71.9 % fractional retainable 28.1 %. This, implication an indication that has good potential sustainability wells. regression equations derived can used easy rapid prediction yield/retention surface data regions similar geological characteristics. These outcomes are very auspicious, particularly devising sustainable development exploitable schemes meet current future needs university community.

Язык: Английский

Geophysical exploration to assess leachate percolation and aquifer protectivity within hydrogeological units at a major open dump in Eket, Nigeria DOI Creative Commons
Ndifreke I. Udosen, Aniekan M. Ekanem, Nyakno J. George

и другие.

Results in Earth Sciences, Год журнала: 2024, Номер 2, С. 100022 - 100022

Опубликована: Апрель 4, 2024

Leachate contamination was investigated with geo-electrical methodologies at a major open dump in Eket, Southern Nigeria. The is heavily polluted, degrades the environment, and has released toxins into atmosphere. To model leachate percolation, vertical electrical soundings (VES) resistivity tomography (ERT) surveys, constrained by well lithological information, were undertaken site. field equipment used for investigations ABEM Terrameter SAS 1000 its accessories. WINRESIST software employed to process sounding data RES2DINV generate 2D tomograms indicating subsurface heterogeneity. Results obtained from showed that had three units (motley topsoil, fine sand coarse sand), being main hydrogeological unit comprising water-bearing formations. first layer's ranged 84.9 – 625.4 Ωm mean of 360.4 Ωm; second 7.5 1008.1 142.9 Ωm, third values 11.6 745.6 205.5 Ωm. indicated percolated groundwater resources. This concerning as water resource within area. Measures Dar-Zarrouk indices reflection co-efficient highly heterogenous region moderate aquifer protective capacity potentiality. mitigate site, sanitary landfills, phyto-remediation, impermeable liners, or earth materials should be diminish rate percolation.

Язык: Английский

Процитировано

10
Geo-electrostratigraphic assessment of aquifer potential, protectivity, and pliable level of vulnerability within a coastal milieu DOI Creative Commons
Ndifreke I. Udosen, Aniekan M. Ekanem, Nyakno J. George

и другие.

Water Practice & Technology, Год журнала: 2024, Номер 19(5), С. 2010 - 2031

Опубликована: Май 1, 2024

ABSTRACT Geo-electro stratigraphic assessments of aquifer potentiality, protectivity, and pliable level vulnerability within a coastal milieu were undertaken with geo-electrical technology. The vertical electrical soundings at 20 locations the 2D resistivity tomography surveys five study area. Results obtained from these coupled hydro-geophysical investigations area indicated presence four geo-electric layers: motley topsoil, sandy clay, fine sand, coarse sand. geo-stratigraphic data assessed groundwater to contamination measures transverse resistance, hydraulic conductivity, transmissivity, diffusivity, storativity, longitudinal conductance. Geo-hydraulic characterization mean 554.6 Ωm, conductivity 0.0004 S/m, conductance 0.67 Ω−1, resistance 5601.7 Ωm2, 3.5 m/day, transmissivity 283 m2/day, storativity 0.0002, diffusivity 1 × 105 m2/day. results that region's potential ranged medium high. Longitudinal values protective capacity moderate poor. Geo-electrical technology was therefore found be an effective methodology for delineating vulnerable system.

Язык: Английский

Процитировано

8
Enhanced Contamination Risk Assessment for Aquifer Management Using the Geo-resistivity and DRASTIC Model in Alluvial Settings DOI Creative Commons
Nyakno J. George, Okechukwu Ebuka Agbasi,

A.J Umoh

и другие.

Cleaner Water, Год журнала: 2024, Номер unknown, С. 100060 - 100060

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

6
Aquifer vulnerability valorization via DRASTIC index-based assessment within litho-facies of a coastal environment DOI Creative Commons
Ndifreke I. Udosen, Nyakno J. George, Aniekan M. Ekanem

и другие.

Results in Earth Sciences, Год журнала: 2024, Номер 2, С. 100033 - 100033

Опубликована: Июль 9, 2024

Determining the degree of an aquifer's susceptibility to pollutants is important tool for policy planning in subterranean water administration and conservation. In this work, vulnerability was appraised with use DRASTIC methodology, which employs seven parameters: depth groundwater (D); net recharge (R); aquifer media (A); soil (S); topography (T); influence vadose zone (I); hydraulic conductivity (C). Different ratings were given each parameter based on hydro-geological geo-electrical information obtained from study area. Geo-electrostratigraphic data acquired vertical electrical soundings resistivity tomography surveys. The results demonstrated existence geoelectrical layers variable resistivities ranging high low, curve types. Longitudinal conductance measures indicated moderate protective capacity. Analysis indices showed that contamination. Vulnerability maps generated indicate locations vulnerability, goal being prevent indiscriminate haphazard wildcat abstraction such locations. quality category index (QCI) model underground susceptivity dependent all 7 parameters employed model, most critical determinants (D), (R), (A), impact (I). work recommends anthropogenic activities could contaminate resource be halted as by models vulnerable.

Язык: Английский

Процитировано

3
Groundwater exploration, management strategies and sustainability: Geophysical approaches DOI Creative Commons
Joseph Omeiza Alao, Fahad Abubakar

Geosystems and Geoenvironment, Год журнала: 2025, Номер unknown, С. 100395 - 100395

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Hydrogeophysical characterization of unconsolidated aquifers: an application of Stratigraphic Modified Lorenz Plots and Flow Zone Indicators for groundwater management DOI
Ndifreke I. Udosen

International Journal of Energy and Water Resources, Год журнала: 2025, Номер unknown

Опубликована: Апрель 28, 2025

Язык: Английский

Процитировано

0
Zonation of coastal geo-electrostratigraphic units via Stratigraphic Modified Lorenz Plots and rock typing DOI Creative Commons
Ndifreke I. Udosen

Results in Earth Sciences, Год журнала: 2025, Номер unknown, С. 100099 - 100099

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Georesistivity assessment of lithological and hydrodynamic factors in groundwater sanitation of Akwa Ibom river channel aquifer system DOI Creative Commons
Nyakno J. George,

KufreRichard Ekanem,

Aniekan M. Ekanem

и другие.

Geosystems and Geoenvironment, Год журнала: 2025, Номер unknown, С. 100411 - 100411

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Hydrogeological and electrostratigraphic modeling of coastal aquifers: Investigating systemic vulnerability, hydraulic yield potential, and corrosivity pathways DOI Creative Commons

Jewel E. Thomas,

Ndifreke I. Udosen, Aniekan M. Ekanem

и другие.

Solid Earth Sciences, Год журнала: 2025, Номер 10(2), С. 100243 - 100243

Опубликована: Май 28, 2025

Язык: Английский

Процитировано

0
Geo-electrical prognosis of aquifer protectivity, corrosivity, and vulnerability via index-based models within a major coastal milieu DOI Creative Commons
Ndifreke I. Udosen, Aniekan M. Ekanem, Nyakno J. George

и другие.

Discover Geoscience, Год журнала: 2024, Номер 2(1)

Опубликована: Июнь 11, 2024

Abstract This work was carried out to investigate the protective capacity, vulnerability, and corrosivity within a major coastal milieu in Southern Nigeria with use of index-based geo-electrical modeling methods. Vertical electrical soundings were undertaken at twenty locations aid Schlumberger array having maximum electrode spacing 400 m. The results indicated that lithology comprised four subsurface layers variable values resistivity thickness. Dar-Zarrouk parameter, Aquifer Vulnerability Index (AVI), GOD (Groundwater occurrence G, Overlying O Depth aquifer D) models employed appraise measures protectivity vulnerability contamination. longitudinal conductance ranged from 0.0071–1.95 mhos mean 0.32 mhos, indicating moderate protectivity. AVI 1.73–4.10 3.03, vulnerability. indices 0.35–0.63 0.49, Corrosivity also computed based on topsoil which 12.7 664.2 Ωm 168.17 Ωm, corrosivity, demonstrating unsuitability corrosive for laying underground pipes. All gave similar interpretations, susceptibility. These corroborated by 2D tomography surveys conducted stations. has therefore delineated important geo-hydraulic properties techniques. obtained are critical effective management, conservation, sustainability.

Язык: Английский

Процитировано

2