The Experts below are selected from a list of 7665 Experts worldwide ranked by ideXlab platform
Adamu Mustapha - One of the best experts on this subject based on the ideXlab platform.
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evaluation of factors influencing the Groundwater Chemistry in a small tropical island of malaysia
International Journal of Environmental Research and Public Health, 2013Co-Authors: Nura Umar Kura, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Wan Nur Azmin Sulaiman, Shaharin Ibrahim, Adamu MustaphaAbstract:Groundwater Chemistry of small tropical islands is influenced by many factors, such as recharge, weathering and seawater intrusion, among others, which interact with each other in a very complex way. In this work, multivariate statistical analysis was used to evaluate the factors controlling the Groundwater Chemistry of Kapas Island (Malaysia). Principal component analysis (PCA) was applied to 17 hydrochemical parameters from 108 Groundwater samples obtained from 18 sampling sites. PCA extracted four PCs, namely seawater intrusion, redox reaction, anthropogenic pollution and weather factors, which collectively were responsible for more than 87% of the total variance of the island’s hydroChemistry. The cluster analysis indicated that three factors (weather, redox reaction and seawater intrusion) controlled the hydroChemistry of the area, and the variables were allocated to three groups based on similarity. A Piper diagram classified the island’s water types into Ca-HCO3 water type, Na-HCO3 water type, Na-SO4-Cl water type and Na-Cl water type, indicating recharge, mixed, weathering and leached from sewage and seawater intrusion, respectively. This work will provide policy makers and land managers with knowledge of the precise water quality problems affecting the island and can also serve as a guide for hydroChemistry assessments of other islands that share similar characteristics with the island in question.
Krzysztof Dragon - One of the best experts on this subject based on the ideXlab platform.
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Impact of human activity on Groundwater Chemistry (Wielkopolska region, Poland)
Baltica, 2016Co-Authors: Krzysztof DragonAbstract:The article identifies the effects of human activity on Groundwater Chemistry in the regional aquifer system located in the Wielkopolska region (western Poland). It was documented using statistical methods, that the main process influencing the Groundwater Chemistry is connected to contamination. The impact of contamination is evident in regions without sewers and where the aquitard is relative thin. Chloride and sulphatewere found most influenced by pollution from surface sources. Total hardness is also sensitive, but its behavior is controlled by geogenic processes as well. Factor analyses are a reliable tool for recognizing contamination’s impact on Groundwater Chemistry, especially for cases with a relatively low contamination level, when contamination is related to natural occurring water components. This research is important for implementing Groundwater protection plans at the regional scale. These interpretations may be used to manage water resources better at the regional scale.
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identification of Groundwater Chemistry origins in a regional aquifer system wielkopolska region poland
Environmental Earth Sciences, 2015Co-Authors: Krzysztof Dragon, Jozef GorskiAbstract:This paper describes the origin of the Groundwater Chemistry in the regional aquifer located in the Wielkopolska region of western Poland. Factor analysis was used for the identification of geochemical processes that influence the Groundwater Chemistry. Two groups of processes were identified: anthropogenic (i.e., caused by Groundwater contamination) and geogenic (i.e., caused by natural geochemical processes). Based on a background of the natural variations in the Groundwater Chemistry, the effect of upward Groundwater flow from the deep part of the flow system on the Groundwater Chemistry was identified. The boron concentrations and isotope data allowed for the identification of zones of relatively old Groundwater. The spatial distribution of fluoride concentrations allowed for the identification of recharge zones. This study demonstrates the general usefulness of Groundwater Chemistry differentiation for supporting identification of Groundwater flow patterns. It also demonstrates the importance of using chemical data to evaluate the connectivity between different aquifers. These interpretations can be used for better management of water resources on a regional scale.
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the influence of anthropogenic contamination on the Groundwater Chemistry of a semi confined aquifer the wielkopolska buried valley aquifer poland
Water Resources Management, 2008Co-Authors: Krzysztof DragonAbstract:The problem of the identification of the influence of anthropogenic contamination on the Groundwater Chemistry of a semi-confined buried valley aquifer is presented. It has been shown that the symptoms of Groundwater Chemistry transformation due to anthropogenic contamination appear, even though confined conditions occur. Statistical techniques have been used for the identification of this problem. Factor analysis has been used to recognize the most vulnerable parts of the aquifer. Based on the factor scores, data sets characterizing natural and pollutant Groundwater Chemistry were distinguished. The comparison of the “natural” Groundwater Chemistry with the whole data set (by means of the correlation analysis and regression analysis) enabled the identification of the components which are the most sensitive to anthropogenic impact. The changes of Groundwater Chemistry over time identify the intensity of the anthropogenic impact.
Nura Umar Kura - One of the best experts on this subject based on the ideXlab platform.
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Spatiotemporal Variations in Groundwater Chemistry of a Small Tropical Island Using Graphical and Geochemical Models
Procedia environmental sciences, 2015Co-Authors: Nura Umar Kura, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Shaharin Ibrahim, Wan Nor Azmin Sulaiman, Tahoora Sheikhy NaranyAbstract:In this work, the spatial and temporal variations in the Groundwater Chemistry of Kapas Island were assessed using geochemical and graphical models. The Durov diagram classifies the Groundwater of the island into three water types; Ca- HCO3-, Na- HCO3-, and Na-Cl types with Ca- HCO3− as the dominant water type. The Schoeller diagram reveals that the order of abundance in ions was Ca2+ > Na+> K+> Mg2+, for cations and HCO3− > Cl− > SO42− for anions. These findings would help in creating a sustainable management plan through strategizing visitations and pumping periods to ensure that the island's aquifer and other smaller islands with similar characteristics are well protected.
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evaluation of factors influencing the Groundwater Chemistry in a small tropical island of malaysia
International Journal of Environmental Research and Public Health, 2013Co-Authors: Nura Umar Kura, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Wan Nur Azmin Sulaiman, Shaharin Ibrahim, Adamu MustaphaAbstract:Groundwater Chemistry of small tropical islands is influenced by many factors, such as recharge, weathering and seawater intrusion, among others, which interact with each other in a very complex way. In this work, multivariate statistical analysis was used to evaluate the factors controlling the Groundwater Chemistry of Kapas Island (Malaysia). Principal component analysis (PCA) was applied to 17 hydrochemical parameters from 108 Groundwater samples obtained from 18 sampling sites. PCA extracted four PCs, namely seawater intrusion, redox reaction, anthropogenic pollution and weather factors, which collectively were responsible for more than 87% of the total variance of the island’s hydroChemistry. The cluster analysis indicated that three factors (weather, redox reaction and seawater intrusion) controlled the hydroChemistry of the area, and the variables were allocated to three groups based on similarity. A Piper diagram classified the island’s water types into Ca-HCO3 water type, Na-HCO3 water type, Na-SO4-Cl water type and Na-Cl water type, indicating recharge, mixed, weathering and leached from sewage and seawater intrusion, respectively. This work will provide policy makers and land managers with knowledge of the precise water quality problems affecting the island and can also serve as a guide for hydroChemistry assessments of other islands that share similar characteristics with the island in question.
Baba Musta - One of the best experts on this subject based on the ideXlab platform.
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delineation of temporal variability and governing factors influencing the spatial variability of shallow Groundwater Chemistry in a tropical sedimentary island
Journal of Hydrology, 2012Co-Authors: Mohd Harun Abdullah, Sarva Mangala Praveena, Aminatul Hawa Yahaya, Baba MustaAbstract:Summary An attempt has been made to delineate the temporal variability and factors governing the shallow Groundwater Chemistry using analysis of variance (ANOVA) and multivariate analysis notably R-mode factor (FA) and hierarchical cluster analysis (HCA). Subsequently, geostatistical isoplethic maps were applied to convey better understanding on the distribution of selected Groundwater parameters. The Manukan Island’s shallow aquifer with sedimentary setting that constantly abstracted for freshwater supply has been selected for this study. One-way ANOVA suggested that neither changes of tide level nor rainfall volume appeared to exert significant influence on the Groundwater Chemistry of the small island. Rather, the Groundwater Chemistry was greatly governed by influence from seawater intrusion, which characterized by considerable amount of Ca, Na, and Cl. Such condition was well explained by a Piper diagram, where most plots were situated at the middle diamond shaped diagram, indicating mixing condition. FA likewise revealed that the shallow Groundwater receives marked influence from carbonate dissolution and silicate weathering processes, especially boreholes located in the inland area. This can be clearly noted from the distinct groupings of relationships among different factors. HCA classified boreholes into three groups according to their locations in the coastal area, suggesting significant chemical variations between boreholes with distance from coast. Such distribution pattern was particularly evident in the isoplethic map. Overall, it appears that the shallow Groundwater in the tropical island is not an appropriate source for drinking water in concern to its exceptionally high salinity and several elevated minor elements (Mn, Pb, and Se). For this, it is suggested that efforts in exploring other alternative sources should be performed outright.
Ahmad Zaharin Aris - One of the best experts on this subject based on the ideXlab platform.
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Groundwater Chemistry of Mabul and Sipadan islands, Sabah
2020Co-Authors: Ahmad Zaharin ArisAbstract:Groundwater samples were collected from seven wells on Mabul island and two wells on Sipadan island to understand the Groundwater Chemistry based on various ion composition (Ca²â�o, Mg²â�o, Na +, K+, HCOâ�»â‚ƒ,SO²â�»â‚„,CIâ�») and in situ parameters such as DO, EC, TDS, pH and temperature. The result of analyses indicates that in general the Groundwater of the study areas were highly enriched with Na+, HCOâ�»â‚ƒ and Cr. At some sampling sites for both islands, the concentration of these ions (Naâ�o, Ca²â�o, HCOâ�»â‚ƒ, SO²â�»â‚„,CIâ�»), as well as other parameters such as total dissolved solids were above the World Health Organization standards for drinking water. The high concentration of ions such as Naâ�o, Mg²â�o and CIâ�» in the Groundwater at some locations indicates some encroachment of seawater into the aquifer. The Groundwater facies range from Na-HCO₃ to Na-CI waters type. In order to gain an understanding of the hydrochemical process of the Groundwater in the Mabul and Sipadan islands, descriptive statistics and correlation matrices were used. The main process influencing the Groundwater Chemistry are dissolution of minerals, cation exchange processes and simple mixing between two types of waters.
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Spatiotemporal Variations in Groundwater Chemistry of a Small Tropical Island Using Graphical and Geochemical Models
Procedia environmental sciences, 2015Co-Authors: Nura Umar Kura, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Shaharin Ibrahim, Wan Nor Azmin Sulaiman, Tahoora Sheikhy NaranyAbstract:In this work, the spatial and temporal variations in the Groundwater Chemistry of Kapas Island were assessed using geochemical and graphical models. The Durov diagram classifies the Groundwater of the island into three water types; Ca- HCO3-, Na- HCO3-, and Na-Cl types with Ca- HCO3− as the dominant water type. The Schoeller diagram reveals that the order of abundance in ions was Ca2+ > Na+> K+> Mg2+, for cations and HCO3− > Cl− > SO42− for anions. These findings would help in creating a sustainable management plan through strategizing visitations and pumping periods to ensure that the island's aquifer and other smaller islands with similar characteristics are well protected.
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evaluation of factors influencing the Groundwater Chemistry in a small tropical island of malaysia
International Journal of Environmental Research and Public Health, 2013Co-Authors: Nura Umar Kura, Ahmad Zaharin Aris, Mohammad Firuz Ramli, Wan Nur Azmin Sulaiman, Shaharin Ibrahim, Adamu MustaphaAbstract:Groundwater Chemistry of small tropical islands is influenced by many factors, such as recharge, weathering and seawater intrusion, among others, which interact with each other in a very complex way. In this work, multivariate statistical analysis was used to evaluate the factors controlling the Groundwater Chemistry of Kapas Island (Malaysia). Principal component analysis (PCA) was applied to 17 hydrochemical parameters from 108 Groundwater samples obtained from 18 sampling sites. PCA extracted four PCs, namely seawater intrusion, redox reaction, anthropogenic pollution and weather factors, which collectively were responsible for more than 87% of the total variance of the island’s hydroChemistry. The cluster analysis indicated that three factors (weather, redox reaction and seawater intrusion) controlled the hydroChemistry of the area, and the variables were allocated to three groups based on similarity. A Piper diagram classified the island’s water types into Ca-HCO3 water type, Na-HCO3 water type, Na-SO4-Cl water type and Na-Cl water type, indicating recharge, mixed, weathering and leached from sewage and seawater intrusion, respectively. This work will provide policy makers and land managers with knowledge of the precise water quality problems affecting the island and can also serve as a guide for hydroChemistry assessments of other islands that share similar characteristics with the island in question.
