Salinity origin in the coastal aquifer of the Southern Venice lowland

被引：0

作者：

Alessandrino L. ^{[1
]}

Gaiolini M. ^{[2
]}

Cellone F.A. ^{[3
,4
]}

Colombani N. ^{[2
]}

Mastrocicco M. ^{[1
]}

Cosma M. ^{[3
]}

Da Lio C. ^{[3
]}

Donnici S. ^{[3
]}

Tosi L. ^{[3
]}

机构：

[1] DiSTABiF - Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Campania University “Luigi Vanvitelli”, Via Vivaldi 43, Caserta

[2] SIMAU - Department of Materials, Environmental Sciences and Urban Planning, Marche Polytechnic University, Via Brecce Bianche 12, Ancona

[3] IGG - Institute of Geosciences and Earth Resources, National Research Council, Via G. Gradenigo 6, Padova

[4] Centro de Investigaciones del Medio Ambiente, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de La Plata (CIM-UNLP-CONICET), Buenos Aires

来源：

Science of the Total Environment | 2023年 / 905卷

关键词：

Aquifer salinization; Cl[!sup]−[!/sup]/Br[!sup]−[!/sup] molar ratio; Depositional environments; Sediment porewater;

D O I：

10.1016/j.scitotenv.2023.167058

中图分类号：

学科分类号：

摘要：

Groundwater salinization can be natural and anthropogenic in origin, although it often results from a combination of both, especially in low-lying coastal regions that are hydraulically controlled. This study proposes a method to assess the origin of salinity using environmental tracers in porewater, like Cl− and Br−, combined with depositional facies associations detected in sediment cores. Such integrated approach was tested in a target area south of the Venice Lagoon (Italy), where groundwater salinization is triggered by multiple mechanisms due to the complexity of the hydro-geomorphological environment. Batch tests were performed on sediment core samples from boreholes to quantify major anions and total inorganic N. Cl− and Br− porewater concentrations coupled with sedimentary facies association provided insights into the origin of groundwater salinity from a variety of sources, including past and present seawater intrusion, agricultural leaching, and evaporites. The strengths and limitations of the integrated approach are discussed to provide a pathway for improving water resource management and planning measures to prevent groundwater salinization in coastal areas. © 2023 The Authors

引用

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