Characterization of the Salinisation Processes in Aquifers Using Boron Isotopes; Application to South-Eastern Spain

Morell, Ignacio; Pulido−Bosch, A.; Martos, Francisco Sánchez; Vallejos, Á.; Daniele, Linda; Molina, Luís; Calaforra, J. M.; Roig, A.; Renau, A.

doi:10.1007/s11270-007-9497-7

Cited by 30 publications

(16 citation statements)

References 45 publications

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“…One such index is the B 10 /B 11 isotope ratio, which can discriminate the origin of salinity and evaluate mixing processes. It is not really an index, but rather a parameter that gives a better understanding of the hydrogeochemical features in aquifers that are influenced by marine intrusion Morell et al 2008). …”

Section: Current State Of Indicator Development For Seawater Intrusionmentioning

confidence: 99%

A Standardized Index for Assessing Seawater Intrusion in Coastal Aquifers: The SITE Index

Ballesteros¹,

Morell

García-Menéndez

et al. 2016

Water Resour Manage

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A large number of coastal aquifers worldwide are impacted by seawater intrusion. A major aim of European Directives 2000/60/EC and 2006/118/EC is to achieve good ecological status in groundwater bodies, including coastal aquifers. To this goal, information is needed about the current state of, and changes over time in, individual aquifers. This information can be obtained by applying methods that determine the status of aquifers in an uncomplicated manner. Methods for this type of assessment must comply with three essential criteria. First, calculation of the index must be straightforward and should be based on easy-to-obtain or commonly available data. Next, the index should be able to highlight important characteristics in understandable terms. Finally, the results should be objective and should be expressed in such a way that different time periods and different aquifers can be compared. In this paper we describe the development of a method to characterize seawater intrusion that meets these criteria and is based on four basic parameters: surface area, intensity, temporality, and evolution. Each parameter is determined by specific calculations derived from the groundwater chloride concentrations. Results are specified as a numerical index and an alphanumeric code. This index, known as SITE, has been applied to four Mediterranean coastal aquifers. The standardized results allowed us to discriminate between, and objectively compare the status of these groundwater bodies. Further, this index will make it possible to prioritize management actions and evaluate the effectiveness of these actions over time.

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Section: Current State Of Indicator Development For Seawater Intrusionmentioning

confidence: 99%

A Standardized Index for Assessing Seawater Intrusion in Coastal Aquifers: The SITE Index

Ballesteros¹,

Morell

García-Menéndez

et al. 2016

Water Resour Manage

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“…Concentrations of boron ranged from 0.1 to 8.4 mg/L have been reported for Cornia plain, Tuskan, Italy [28][29][30]. Concentrations ranged from 0.04 to 5.38 mg/L were determined in South-Eastern Spain, with higher values in Lower Andarax area [31,32]. In Turkey, boron concentrations ranged from 0.05 to 391 mg/L were found in rich boron mine areas [33,34].…”

Section: Boron Distributionmentioning

confidence: 99%

“…Chloride and bromide are considered as conservative anions, even in geothermal environments. The ratios Cl/Br and Cl/B together with variations of boron isotopes can offer a valuable tool in order to identify the origin of salinity and potential sources of boron in waters [1,29,30,32].…”

Section: Geochemical Tracersmentioning

confidence: 99%

“…The occurrence of Br in groundwater is probably due to the marine aerosols in rainwater recharged the aquifers rather than active seawater intrusion. The ratio Cl/Br in waters can be used to distinguish between natural and anthropogenic causes of salinization, to identify possible mixing of freshwater-seawater, different saline flows and their relative contribution, the development of the brines and the genesis of deep saline waters [31,32]. The values of the ratio Cl/Br in waters in the area of Chalkidiki deviate from the ratio observed in seawater suggesting low possibility of mixing between groundwater and seawater.…”

Section: Geochemical Tracersmentioning

confidence: 99%

“…The boron isotopic composition in waters reflects the isotopic values of minerals in aquifers and soils, water-rock reactions, mixing among different water types and possible inputs from anthropogenic activities [1,23,29,30,32,39,40]. The isotopic signature of various boron sources is preserved and serves as tracer to delineate the origin of this element in groundwater.…”

Section: Isotopic Signaturesmentioning

confidence: 99%

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Study on distribution and origin of boron in groundwater in the area of Chalkidiki, Northern Greece by employing chemical and isotopic tracers

Voutsa

Ḏotsika

Κούρας

et al. 2009

Journal of Hazardous Materials

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Significance of isotopic and geochemical methods to determine the evolution of inland brackish and bitter water: An example from the Zuli river in the upper reaches of the Yellow River, China

Liu

Tan

Brusseau

2021

Hydrological Processes

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With the increasing demand for water resources, the utilization of marginal water resources of poor‐quality has become a focus of attention. The brackish water developed in the Loess Plateau is not only salty but also famous for its ‘bitterness’. In the present work, multi‐isotope analysis (Sr, B) was combined with geochemical analysis to gain insight into the hydrogeochemical evolution and formation mechanisms of brackish water. These results demonstrate that groundwater in the headwater is influenced by carbonate weathering. After the confluence of several tributaries in the headwater, the total dissolved solids (TDS) of water is significantly increased. The dissolution of evaporates is shown to be the main source of salinity in brackish water, which also greatly affects the strontium isotopic composition of water. This includes the dissolution of Mg‐rich minerals, which is the main cause of the bitterness. Furthermore, the release of calcium from the dissolution of gypsum may induce calcite precipitation and incongruent dissolution of dolomite, which also contributes to the enrichment of magnesium. The highly fractionated boron isotopic values observed in the upstream groundwater were explained by the absorption with clay minerals. The inflow of brackish groundwater is the source of river water. Then evaporation further aggravates the salinization of river water, with water quality evolving to saline conditions in the lower reach. When the river reaches the valley plain, the 87Sr/86Sr ratios decreases significantly, which is primarily related to erosion of the riverbanks during runoff. These results indicate that water resource sustainability could be enhanced by directing focus to mitigating salinization in the source area of the catchment.

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Characterization of the Salinisation Processes in Aquifers Using Boron Isotopes; Application to South-Eastern Spain

Cited by 30 publications

References 45 publications

A Standardized Index for Assessing Seawater Intrusion in Coastal Aquifers: The SITE Index

A Standardized Index for Assessing Seawater Intrusion in Coastal Aquifers: The SITE Index

Study on distribution and origin of boron in groundwater in the area of Chalkidiki, Northern Greece by employing chemical and isotopic tracers

Significance of isotopic and geochemical methods to determine the evolution of inland brackish and bitter water: An example from the Zuli river in the upper reaches of the Yellow River, China

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