Hydrochemical and statistical studies of the groundwater salinization in Mediterranean arid zones: case of the Jerba coastal aquifer in southeast Tunisia

Kharroubi, Adel; Tlahigue, Faten; Agoubi, Belgaçem; Azri, Chafai; Bouri, Salem

doi:10.1007/s12665-012-1648-5

Cited by 44 publications

(15 citation statements)

References 27 publications

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“…9). Among the most affected areas by the intrusion of sea water in North Africa are El jadida, Annaba, Korba, Sfax, and Gabès (Trabelsi et al 2007;Hamed 2015a, b;Kharroubi et al 2012;Agoubi et al 2013;Redhaounia et al 2015;Telahigue et al 2018).…”

Section: Climate Change Effects On Groundwater In North Africamentioning

confidence: 99%

Climate impact on surface and groundwater in North Africa: a global synthesis of findings and recommendations

Hamed

Hadji

Redhaounia

et al. 2018

Euro-Mediterr J Environ Integr

182

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Climate change is having short-and long-term impacts on surface and groundwater in the northern part of the African continent. This has led to a wide range of consequences that have added pressure on the groundwater systems in this part of the world. Among such pressures, we can cite the mal-distribution and the irregularity of precipitation and ice, flooding, evaporitic sediments input by the drainage net, water degradation, mud stagnation in dams, dead tranche, drought, decreasing of the natural recharge and increasing of the groundwater abstraction, conflict between trans-boundary waters, desertification, imbalance between the regions, migration, revolution, socio-economic imbalance, etc. Actually, watermonitoring networks indicate noticeable hydrogeologic variations and a rise of the groundwater salinity. It was confirmed by the geochemical analysis of water resources that showed scattered data between the northern part characterized by low mineralized groundwater (TDS ranging 0.4-3 g/l) and the southern area where the salinity ranges from 2.5 to 90 g/l. The obtained values are far above the permissible limits for both human consumption, agricultural and tourist activities. These effects, when compounded, are anticipated to worsen the situation and to constitute veritable threats for social and economic development in these regions of North Africa (Morocco, Algeria, Tunisia, Libya, Egypt, etc.). The potential solutions consist of taking urgent to utilize the intelligent technology (bio and nano-technology), policies relevant policies to manage water resources, and the engagement of private, civil, and international sectors if a major crisis is to be averted (collective effort).

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Section: Climate Change Effects On Groundwater In North Africamentioning

confidence: 99%

Climate impact on surface and groundwater in North Africa: a global synthesis of findings and recommendations

Hamed

Hadji

Redhaounia

et al. 2018

Euro-Mediterr J Environ Integr

182

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“…Principal component analysis (PCA) and correlation test (CT) have been conducted by researchers worldwide to make groundwater management decisions [43][44][45][46]. For instance, Guo [44] used PCA to identify the relationship among heavy metals of flood slack water deposits and their possible sources; and Zhang [46] used PCA to determine factors that influence the composition of groundwater.…”

Section: Data Analysis Methodsmentioning

confidence: 99%

Assessment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China

Wang

Liu³

et al. 2015

Water

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Water shortage is severe in the North China Plain (NCP). In addition to a deficiency of water resources, deterioration of groundwater quality should be of great concern. In this study, hydrogeological analysis was conducted in combination with principal component analysis, correlation analysis and the co-kriging method to identify factors controlling the content of major ions and total dissolved solids (TDS) in areal shallow and deep groundwater and to assess groundwater evolution in Cangzhou, China. The results suggested that groundwater quality degradation occurred and developed in the study area, as indicated by increasing concentrations of major ions, TDS and hardness in both shallow and deep groundwater. In shallow groundwater, whose hydrochemical water types changed from HCO3-Ca.Na.Mg and HCO3.Cl-Na in the west (Zone II) to Cl.SO4-Na and Cl-Na in the east (Zone III). Areas with TDS concentrations between 1500 and 2000 mg/L occupied 79.76% of the total in the 1980s, while areas with a TDS concentration ranging from 2500 to 3000 mg/L comprised 59.11% of the total in the 2010s. In deep groundwater, the area with TDS over 1000 mg/L expanded from 5366.39 km groundwater. Dissolution of dolomite, calcite, feldspar and gypsum were the primary sources of major ions in groundwater, and the ion exchange reaction had a strong effect on the cation content, especially for deep groundwater.

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“…In this study, only the principal component analysis (PCA) and Pearson correlation matrix analysis were undertaken. The application of PCA offers a clearer understanding of groundwater quality and enables comparison of the different waters as well as 3 Geofluids their geochemical correlations [20]. The combination of different established elements (samples and parameters) was used to assess the spatial variation of the groundwater chemical composition and to identify the most common pollution sources.…”

Section: -mentioning

confidence: 99%

Inferred Industrial and Agricultural Activities Impact on Groundwater Quality of Skhira Coastal Phreatic Aquifer in Southeast of Tunisia (Mediterranean Region)

2019

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In Tunisia, it has been proven through various previously published studies that agricultural overexploitation and urban and industrial activities increase the risk of groundwater quality deterioration. The present study is a new research to be added to groundwater appraisal and comes to assess groundwater quality of the phreatic Skhira aquifer in relation to surrounding anthropic activities and also tries to evaluate potential risk threatenings of the local population. For that, 20 water well samples covering the phreatic aquifer were analyzed for physical and chemical parameters, major cations and anions, nutrient elements, fluorine, and some trace metal elements. Results show that the area close to the phosphogypsum storage site is the zone which is the most affected by industrial activity. This area corresponds to the upstream part of the aquifer, in terms of the trending flow, and records the highest conductivity values, high H 2 PO 4 -, F -, SO 4 2-, and Zn 2+ concentrations. Groundwater samples in this area are also characterized by a relatively low hydrogen potential (acid pH). High NO 3 are recorded especially upstream of the aquifer and are thought to be caused by high fertilizer use. Overall, most analyzed samples do not meet the World Health Organization norms and therefore are not suitable as drinking waters. In addition, well water use for irrigation represents a medium to high sodicity and alkanization risk. The current study sheds light on the increasing deterioration risk of the aquifer and is an awakening call for decision-makers to imply means for urgent solutions.

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Hydrochemical and statistical studies of the groundwater salinization in Mediterranean arid zones: case of the Jerba coastal aquifer in southeast Tunisia

Cited by 44 publications

References 27 publications

Climate impact on surface and groundwater in North Africa: a global synthesis of findings and recommendations

Climate impact on surface and groundwater in North Africa: a global synthesis of findings and recommendations

Assessment of Long-Term Evolution of Groundwater Hydrochemical Characteristics Using Multiple Approaches: A Case Study in Cangzhou, Northern China

Inferred Industrial and Agricultural Activities Impact on Groundwater Quality of Skhira Coastal Phreatic Aquifer in Southeast of Tunisia (Mediterranean Region)

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