Hydrogeochemical processes affecting groundwater in an irrigated land in Central Tunisia

Farid, Intissar; Trabelsi, Rim; Zouari, Kamel; Abid, Kamel; Ayachi, Mohamed Slim El

doi:10.1007/s12665-012-1788-7

Cited by 60 publications

(35 citation statements)

References 24 publications

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“…Hence, the composition of groundwater is an important measure whether the modification has occurred through either natural or anthropogenic processes. Therefore, during the last few years, much attention was made to evaluate the geochemistry of groundwater in tropical and arid regions that are mostly discussed based on the lithological and anthropogenic influences (Soumya et al 2013;Alaya et al 2014;Burow et al 2013;Chandrajith et al 2014;Farid et al 2013;Machender et al 2014;Uddameri et al 2014;Varol and Davraz 2014).…”

Section: Introductionmentioning

confidence: 99%

Geochemical characteristics of groundwater in different climatic zones of Sri Lanka

2015

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Sri Lanka is characterized by well-demarcated climatic zones based on the rainfall pattern known as wet zone, dry zone and intermediate zone. Groundwaters in these three zones are extracted mainly for drinking and irrigation from metamorphic hard rock aquifers and saprolite developed on metamorphic rocks. Detailed hydrogeochemical investigations were carried out covering these three climatic zones in order to characterize the groundwater. A total of 166 groundwater samples were collected representing three climatic zones and analyzed for their major and trace element geochemistry. The results indicate a clear difference in the geochemistry of groundwater between climatic regions, whereas semiarid dry zone groundwater is characterized with higher dissolved mineral contents compared that of the wet and intermediate zones.Low pH levels were noticed in the wet zone areas, while high calcium and fluoride contents were observed in the dry and intermediate terrains. Remarkably, high phosphate contents were observed in all three regions, indicating the influence of fertilizer application on groundwater. Particularly in the dry zone regions, the groundwater chemistry is mainly controlled by rock-water interactions and ion exchange processes in which high mineral contents are added from underlying metamorphic rocks to the drinking and irrigation water. The results indicate that groundwater in the dry zone area is under stress compared to other climate areas, but in the wet zone groundwater shows remarkable influence of anthropogenic activities.

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Section: Introductionmentioning

confidence: 99%

Geochemical characteristics of groundwater in different climatic zones of Sri Lanka

2015

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“…Over the past several decades, numerous studies have used a variety of geochemical indicators to assess the origin of saline water within a hydrological system on a local or regional scale (Pascual and Custodio, 1990;Dixon and Chiswell, 1992;Stephen Fisher and Mullican, 1997;Sanchez Martoz et al, 1998;Cruz and Silva, 2000;Edmunds et al, 2003;Pulido-Leboeuf et al, 2003;Appelo and Postma, 2005;De Montety et al, 2008;Farid et al, 2013aFarid et al, , 2013.…”

Section: Introductionmentioning

confidence: 99%

Origin of the groundwater salinity and geochemical processes in detrital and carbonate aquifers: Case of Chougafiya basin (Central Tunisia)

Farid

Zouari

Rigane

et al. 2015

Journal of Hydrology

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“…PC4 has a high positive loading in Na + and high negative loadings in other three cations: Ca 2+ , K + and Mg 2+ . Therefore, it may represent the cation exchange process of clay particles, which is common in arid and semi-arid environments [53,54,57]. …”

Section: Pca Resultsmentioning

confidence: 99%

Investigating Hydrochemical Groundwater Processes in an Inland Agricultural Area with Limited Data: A Clustering Approach

Zheng

Zhang

et al. 2017

Water

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Abstract:Groundwater chemistry data are normally scarce in remote inland areas. Effective statistical approaches are highly desired to extract important information about hydrochemical processes from the limited data. This study applied a clustering approach based on the Gaussian Mixture Model (GMM) to a hydrochemical dataset of groundwater collected in the middle Heihe River Basin (HRB) of northwestern China. Independent hydrological data were introduced to examine whether the clustering results led to an appropriate interpretation on the hydrochemical processes. The main findings include the following. First, in the middle HRB, although groundwater chemistry reflects primarily a natural salinization process, there are evidence for significant anthropogenic influence such as irrigation and fertilization. Second, the regional hydrological cycle, particularly surface water-groundwater interaction, has a profound and spatially variable impact on groundwater chemistry. Third, the interaction between the regional agricultural development and the groundwater quality is complicated. Overall, this study demonstrates that the GMM clustering can effectively analyze hydrochemical datasets and that these clustering results can provide insights into hydrochemical processes, even with a limited number of observations. The clustering approach introduced in this study represents a cost-effective way to investigate groundwater chemistry in remote inland areas where groundwater monitoring is difficult and costly.

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Hydrogeochemical processes affecting groundwater in an irrigated land in Central Tunisia

Cited by 60 publications

References 24 publications

Geochemical characteristics of groundwater in different climatic zones of Sri Lanka

Geochemical characteristics of groundwater in different climatic zones of Sri Lanka

Origin of the groundwater salinity and geochemical processes in detrital and carbonate aquifers: Case of Chougafiya basin (Central Tunisia)

Investigating Hydrochemical Groundwater Processes in an Inland Agricultural Area with Limited Data: A Clustering Approach

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