Next Article in Journal
Determining Flood Zonation Maps, Using New Ensembles of Multi-Criteria Decision-Making, Bivariate Statistics, and Artificial Neural Network
Previous Article in Journal
Impact of Flooding on Shallow Groundwater Chemistry in the Taklamakan Desert Hinterland: Remote Sensing Inversion and Geochemical Methods
Previous Article in Special Issue
Using Freshwater Heads to Analyze Flow Directions in Saline Aquifers of the Pingtung Plain, Taiwan
 
 
Article

An Integrated Approach for Investigating the Salinity Evolution in a Mediterranean Coastal Karst Aquifer

1
Water Research Institute, National Research Council (IRSA-CNR), 00015 Monterotondo (Rome), Italy
2
Water Research Institute, National Research Council (IRSA-CNR), 70132 Bari, Italy
3
Institute of Geosciences and Earth Resources, National Research Council (IGG-CNR), 56124 Pisa, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Pankaj Kumar
Water 2022, 14(11), 1725; https://doi.org/10.3390/w14111725
Received: 29 April 2022 / Revised: 23 May 2022 / Accepted: 25 May 2022 / Published: 27 May 2022
(This article belongs to the Special Issue Coastal Aquifers: Seawater/Saltwater Intrusion)
Coastal areas are characterized by considerable demographic pressure that generally leads to groundwater overexploitation. In the Mediterranean region, this situation is exacerbated by a recharge reduction enhanced by climate change. The consequence is water table drawdown that alters the freshwater/seawater interface facilitating seawater intrusion. However, the groundwater salinity may also be affected by other natural/anthropogenic sources. In this paper, water quality data gathered at 47 private and public wells in a coastal karst aquifer in Apulia (southern Italy), were interpreted by applying disparate methods to reveal the different sources of groundwater salinity. Chemical characterization, multivariate statistical analysis, and mixing calculations supplied the groundwater salinization degree. Characteristic ion ratios, strontium isotope (87Sr/86Sr), and pure mixing modelling identified the current seawater intrusion as a main salinity source, also highlighting the contribution of water–rock interaction to groundwater composition and excluding influence from Cretaceous paleo-seawater. Only the combined approach of all the methodologies allowed a clear identification of the main sources of salinization, excluding other less probable ones (e.g., paleo-seawater). The proposed approach enables effective investigation of processes governing salinity changes in coastal aquifers, to support more informed management. View Full-Text
Keywords: groundwater/seawater mixing phenomena; water-rock interaction; geochemical modelling; characteristic ion ratios; strontium isotope ratio; Apulia groundwater/seawater mixing phenomena; water-rock interaction; geochemical modelling; characteristic ion ratios; strontium isotope ratio; Apulia
Show Figures

Figure 1

MDPI and ACS Style

Frollini, E.; Parrone, D.; Ghergo, S.; Masciale, R.; Passarella, G.; Pennisi, M.; Salvadori, M.; Preziosi, E. An Integrated Approach for Investigating the Salinity Evolution in a Mediterranean Coastal Karst Aquifer. Water 2022, 14, 1725. https://doi.org/10.3390/w14111725

AMA Style

Frollini E, Parrone D, Ghergo S, Masciale R, Passarella G, Pennisi M, Salvadori M, Preziosi E. An Integrated Approach for Investigating the Salinity Evolution in a Mediterranean Coastal Karst Aquifer. Water. 2022; 14(11):1725. https://doi.org/10.3390/w14111725

Chicago/Turabian Style

Frollini, Eleonora, Daniele Parrone, Stefano Ghergo, Rita Masciale, Giuseppe Passarella, Maddalena Pennisi, Matteo Salvadori, and Elisabetta Preziosi. 2022. "An Integrated Approach for Investigating the Salinity Evolution in a Mediterranean Coastal Karst Aquifer" Water 14, no. 11: 1725. https://doi.org/10.3390/w14111725

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop