Development of AHPDST Vulnerability Indexing Model for Groundwater Vulnerability Assessment Using Hydrogeophysical Derived Parameters and GIS Application

Mogaji, Kehinde Anthony

doi:10.1007/s00024-017-1499-9

Cited by 16 publications

(9 citation statements)

References 94 publications

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“…Properties like electrical resistivity, chargeability and dielectric constant are parameters correlated with hydrogeological and geochemical aspects and, therefore, they are widely applied to environmental investigations [15][16][17][18], groundwater contamination studies [19][20][21], generation of leaching in uncontrolled landfills [22][23][24] and generation of acid mine drainage [14,25,26].…”

Section: Introductionmentioning

confidence: 99%

Structural analysis and geophysical survey for hydrogeological diagnosis in uranium mine, Poços de Caldas (Brazil)

et al. 2019

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The implementation of open pit mines promotes alterations on geological and hydrogeological processes, mainly on natural streamflow patterns. Drainage system tries to reach its equilibrium due to modification on slope profiling water flows through new pathways contributing to erosion and leaching processes. One of the impacts related to mining is the generation of acid mine drainage (AMD), which occurs as a product of sulfide minerals exposure to oxidizing environment and, in contact to water, favors the formation of sulfuric acid. Thus, a low pH promotes a higher mobility of heavy metals and radionuclides, which become a source of contamination. In order to understand the hydrogeological dynamic in rock masses that contribute to AMD production, this paper aimed to subsidize mitigation programs in fractured aquifers using a structural analysis and geophysical survey for the reduction of acid drainage generation. The study was carried at the four mining fronts that compose the mine pit of Osamu Utsumi Mine, named according to its cardinal position (NE, SE, SW and NW). Local structural survey indicated that fractures attitudes are mainly N20E/80NW and N55 W/75NE, with intersections between them. Evidence of water flows, like whitish kaolinite stains and small vegetation growth, was identified in fronts NE, SW and NW, in addition to water springs at the base of the slopes. The flows arise mainly in areas that coincide to intersection between fracture systems in an orthogonal arrangement and the fracturing pattern indicated that at all fronts most of the fracture planes project into the open pit area, which favor the water channeling to the center of the mine as a water catchment basin. Moreover, the relationship between the persistence and spacing among the discontinuities enables a good hydraulic conductivity within the rock masses and the water upwelling on the slopes surface. The geophysical data corroborated with the structural survey, which identified the fracture planes as linear structures associated with low resistivity zones. DC resistivity method showed a strong contrast between saturated zones, differing natural from acidic water. Delimitation of linear features in the inversion models indicated that water flows are channeled through fracture planes and promote an expressive weathering process inside the rock masses, observed at depths of up to 70 m.

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Section: Introductionmentioning

confidence: 99%

Structural analysis and geophysical survey for hydrogeological diagnosis in uranium mine, Poços de Caldas (Brazil)

et al. 2019

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“…Nobre et al 2007Doumouya et al 2012Samake et al 2011). The harnessing of these factors weightage influence using different vulnerability methods' algorithm has been evaluated (Thirumalaivasan et al 2003;Dixon 2005;Antonakos and Lambrakis 2007;Mogaji 2017;Razandi et al 2015;Falah et al 2016;Naser et al 2016).…”

Section: The Data Types Processing and Pollution Potential Conditionimentioning

confidence: 99%

“…The scientific basis viz-a-viz the theory and the established algorithm for the DIM technically adapt the weight linear combination (WLC) mathematically, where the weight, the range and the rating of imputes are often expressed numerically. The information on the model working principle has been documented in several studies of Sahoo et al (2016), Mogaji (2017) and Aller et al (1987). According to Ettazarini and El Mahmouhi (2004), the hydrogeological parameters component for the workability of the model includes: depth to water table (D), net recharge (R), aquifer media (A), soil media (S), topography or slope (T), impact of the vadose zone (I) and hydraulic conductivity (C).…”

Section: Drastic Index Model (Dim) Theorymentioning

confidence: 99%

Application of vulnerability modeling techniques in groundwater resources management: a comparative study

Mogaji

2018

Appl Water Sci

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The sustainability management of groundwater resource globally is challenged by its vulnerability to pollution resulting from anthropogenic activities. In order to address this problem, the DRASTIC index model (DIM) method among the existing vulnerability modeling techniques is commonly used. OWA-DRASTIC index model (ODIM) technique is another recently developed method for the same task. This study investigated the application of these vulnerability-biased modeling methods in a multi-faceted geologic setting at Perak Province, Malaysia with the view of establishing their efficiencies. The models considered seven pollution potential conditioning factors (PPCFs) obtained from difference data sources. Applying the GIS-based multi-criterial algorithm of these models, the PPCFs were related for developing multi-parameters-based vulnerability index model equations. Groundwater vulnerability to pollution index (GVPI) maps was produced from the synthesized estimated results of the applied multi-parameters-based vulnerability index model equations. The reliability of the produced GVPI maps was established using analyzed groundwater quality data results. The obtained prediction accuracy results for the ODIM-based GVPI map and DIM-based GVPI map are 85.71 and 64.29%, respectively. Besides, the regression coefficient results obtained from the spatially estimate from the DIM and ODIM' vulnerability index's values relationship with the pH and manganese concentrations give 83 and 85% for the ODIM technique and 68 and 63% for the DIM technique, respectively. The overall results indicated that the applied ODIM method in the area is a better alternative to the conventional DIM method. The produced GVPI maps can be useful to regional planners and environmental managers entrusted with the protection of groundwater resource.

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“…The application of multi-criteria decision analysis (MCDA) techniques in the field of groundwater hydrology is relatively a recent development. However, the uniqueness of these MCDA techniques' philosophy is such that their mechanisms allow systemic analysis and integrating of relevant criteria/factors to model or predicting target proposition that are traceable to mineralization potential mapping, groundwater potentiality mapping, vulnerability mapping etc (Elmahdy and Mohamed, 2014;Corsini et al, 2009;Carranza et al, 2008;Mogaji, 2017). Among the mostly used MCDA methods in groundwater prospectivity mapping is the analytical hierarchic processes (AHP) approach (Adiat et al, 2012;Chowdhury et al, 2009;Jha et al, 2010;Mogaji and Lim, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Besides, for the purpose of precise decision making in groundwater recharge zones prediction, the applicability of the GOD modeling algorithm has been explored (Cheng-Haw et al, 2013). Thus, the efficiency of GOD model in groundwater sustainability management through its mapping potential of groundwater recharge and vulnerability zones which according to Mogaji et al (2015b) and Mogaji (2017) are the very keys to groundwater resources development has been feasible. GOD model derived its acronyms from three basic criteria including: the groundwater hydraulic conferment (G), the overlying lithology strata (O) and the depth to water table (D) that have direct bearing with groundwater conduit movement and accumulation in the subsurface (Jha et al, 2010 andAdeyemo et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Modeling of geoelectric parameters for assessing groundwater potentiality in a multifaceted geologic terrain, Ipinsa Southwest, Nigeria – A GIS-based GODT approach

Mogaji

Omobude

2017

NRIAG Journal of Astronomy and Geophysics

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Modeling of groundwater potentiality zones is a vital scheme for effective management of groundwater resources. This study developed a new multi-criteria decision making algorithm for groundwater potentiality modeling through modifying the standard GOD model. The developed model christened as GODT model was applied to assess groundwater potential in a multi-faceted crystalline geologic terrain, southwestern, Nigeria using the derived four unify groundwater potential conditioning factors namely: Groundwater hydraulic confinement (G), aquifer Overlying strata resistivity (O), Depth to water table (D) and Thickness of aquifer (T) from the interpreted geophysical data acquired in the area. With the developed model algorithm, the GIS-based produced G, O, D and T maps were synthesized to estimate groundwater potential index (GWPI) values for the area. The estimated GWPI values were processed in GIS environment to produce groundwater potential prediction index (GPPI) map which demarcate the area into four potential zones. The produced GODT model-based GPPI map was validated through application of both correlation technique and spatial attribute comparative scheme (SACS). The performance of the GODT model was compared with that of the standard analytic hierarchy process (AHP) model. The correlation technique results established 89% regression coefficients for the GODT modeling algorithm compared with 84% for the AHP model. On the other hand, the SACS validation results for the GODT and AHP models are 72.5% and 65%, respectively. The overall results indicate that both models have good capability for predicting groundwater potential zones with the GIS-based GODT model as a good alternative. The GPPI maps produced in this study can form part of decision making model for environmental planning and groundwater management in the area.

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Development of AHPDST Vulnerability Indexing Model for Groundwater Vulnerability Assessment Using Hydrogeophysical Derived Parameters and GIS Application

Cited by 16 publications

References 94 publications

Structural analysis and geophysical survey for hydrogeological diagnosis in uranium mine, Poços de Caldas (Brazil)

Structural analysis and geophysical survey for hydrogeological diagnosis in uranium mine, Poços de Caldas (Brazil)

Application of vulnerability modeling techniques in groundwater resources management: a comparative study

Modeling of geoelectric parameters for assessing groundwater potentiality in a multifaceted geologic terrain, Ipinsa Southwest, Nigeria – A GIS-based GODT approach

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