Hydrochemistry and isotope geochemistry as tools for groundwater hydrodynamic investigation in multilayer aquifers: a case study from Lomellina, Po plain, South-Western Lombardy, Italy

Pilla, Giorgio; Sacchi, Elisa; Zuppi, G.M.; Braga, Giovanni; Ciancetti, Gianfranco

doi:10.1007/s10040-005-0465-2

Cited by 59 publications

(30 citation statements)

References 14 publications

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“…This information is particularly important in groundwater systems where the hydrogeology is complex due to the presence of multiple aquifers. In the case of multilayer aquifer systems, the spatial variations in groundwater chemistry can help in determining the vertical interactions of the groundwater between different aquifers (AlMashaikhi et al 2012;Carillo-Rivera et al 1996;Pilla et al 2006). …”

Section: Introductionmentioning

confidence: 99%

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Dragon

Górski

2014

Environ Earth Sci

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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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Section: Introductionmentioning

confidence: 99%

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Dragon

Górski

2014

Environ Earth Sci

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“…As rivers carry the imprints of chemical erosion on the continental and local scale in the forms of dissolved materials, geochemical methods have been applied widely to examine the spatial variability in the water's characteristics and to better understand the functioning of hydrosystems (e.g., Pilla et al 2006;Zhu and Yang 2007;Stadler et al 2010;Zhu et al 2011), as they are basically an independent method from hydraulics of filter flow and, therefore, enable to complement hydraulic methods on evaluating natural water recharge or mixing of waters from different origins. The objectives of this study were (1) to examine the processes controlling the geochemical genesis of ground waters in northern Xinjiang drainage system and (2) to identify the factors potentially governing the recharge and evolution of these waters, by using two well-known multivariate statistical methods.…”

Section: Introductionmentioning

confidence: 99%

Statistical study to identify the key factors governing ground water recharge in the watersheds of the arid Central Asia

Zhu

Wang

2015

Environ Monit Assess

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Understanding the source and recharge of ground waters is of great significance to our knowledge in hydrological cycles in arid environments over the world. Northern Xinjiang in northwestern China is a significant repository of information relating to the hydrological evolution and climatic changes in central Asia. In this study, two multivariate statistical techniques, hierarchical cluster analysis (HCA) and principal component analysis (PCA), were used to assess the ground water recharge and its governing factors, with the principal idea of exploring the above techniques to utilize all available hydrogeochemical variables in the quality assessment, which are not considered in the conventional techniques like Stiff and Piper diagrams. Q-mode HCA and R-mode PCA were combined to partition the water samples into seven major water clusters (C1-C7) and three principal components (PC1-PC3, PC1 salinity, PC2 hydroclimate, PC3 contaminant). The water samples C1 + C4 were classified as recharge area waters (Ca-HCO 3 water), C2 + C3 as transitional zone waters (Ca-Mg-HCO 3 -SO 4 water), and C5 + C6 + C7 as discharge area waters (Na-SO 4 water). Based on the Q-mode PCA scores, three groups of geochemical processes influencing recharge regimes were identified: geogenic (i.e., caused by natural geochemical processes), geomorphoclimatic (caused by topography and climate), and anthropogenic (caused by ground water contamination). It is proposed that differences in recharge mechanism and ground water evolution, and possible bedrock composition difference, are responsible for the chemical genesis of these waters. These will continue to influence the geochemistry of the northern Xinjiang drainage system for a long time due to its steady tectonics and arid climate. This study proved that the chemistry differentiation of ground water can effectively support the identification of ground water recharge and evolution patterns.

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“…This decrease in transmissivity has long been recognised by means of hydrological (e.g. occurrence of springs) and geochemical observations (Pilla et al, 2006;De Caro et al, 2017). The ratio between the cumulative thickness (hydr) of each hydrofacies (Fig.…”

Section: Hydraulic Parametrization and Model Discretizationmentioning

confidence: 83%

Hydrofacies reconstruction of glaciofluvial aquifers and groundwater flow modelling in a densely urbanized area under changing climatic conditions

Crosta

Frattini

et al. 2017

Preprint

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Abstract. Potential impacts of global climate changes on the groundwater are largely unknown, especially for densely populated areas where groundwater is heavily exploited for public and industrial supply. Hence, to better plan and manage the 10 groundwater resources, medium-long term numerical modelling of groundwater flow, which takes into account climate change, population growth, and industrial and agricultural activities, is needed. The objective of this paper is to tackle three main issues: (1) the development of a robust hydro-stratigraphic model of a multi-aquifer system from a well logs database by means of a novel multi-dimensional approach which includes a hierarchical classification of the lithologies, the interpretation of crosssections, and the interpolation of aquifer boundary surfaces; (2) the parametrization and calibration of both a steady state and 15 a transient groundwater flow model, starting from empirical relationships (for unconfined aquifer) and step-drawdown and well tests (for semi-confined and confined aquifers) to define equivalent homogenous sub-units; and (3)

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Hydrochemistry and isotope geochemistry as tools for groundwater hydrodynamic investigation in multilayer aquifers: a case study from Lomellina, Po plain, South-Western Lombardy, Italy

Cited by 59 publications

References 14 publications

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Identification of groundwater chemistry origins in a regional aquifer system (Wielkopolska region, Poland)

Statistical study to identify the key factors governing ground water recharge in the watersheds of the arid Central Asia

Hydrofacies reconstruction of glaciofluvial aquifers and groundwater flow modelling in a densely urbanized area under changing climatic conditions

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