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Christofi, C.; Bruggeman, A.; Kuells, C.; Constantinou, C. |
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Title |
Hydrochemical evolution of groundwater in gabbro of the Troodos Fractured Aquifer. A comprehensive approach |
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2020 |
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Applied Geochemistry |
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114 |
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104524 |
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Pergamon |
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THL @ christoph.kuells @ christofi2020hydrochemical |
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200 |
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Christofi, C.; Bruggeman, A.; Kuells, C.; Constantinou, C. |
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Title |
Isotope hydrology and hydrogeochemical modeling of Troodos Fractured Aquifer, Cyprus: The development of hydrogeological descriptions of observed water types |
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2020 |
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Applied Geochemistry |
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123 |
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104780 |
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Pergamon |
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THL @ christoph.kuells @ christofi2020isotope |
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206 |
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Christofi, C.; Bruggeman, A.; Kuells, C. |
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Title |
The Isotopic Composition of Cyprus Precipitation. A Tool of Isotope Hydrology |
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2021 |
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EGU General Assembly Conference Abstracts |
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21 |
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THL @ christoph.kuells @ christofi2021isotopic |
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208 |
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Daniele, L.; Vallejos, Á.; Corbella, M.; Molina, L.; Pulido-Bosch, A. |
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Title |
Hydrogeochemistry and geochemical simulations to assess water–rock interactions in complex carbonate aquifers: The case of Aguadulce (SE Spain) |
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2013 |
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Applied Geochemistry |
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29 |
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43-54 |
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The hydrogeological unit of Aguadulce (Campo de Dalías aquifers, SE Spain) has a complex geometry. This fact, together with a continuous rise in water demand due to intensive agriculture and tourism create problems for groundwater quantity and quality. In this paper classic geochemical tools managed by means of GIS software and geochemical simulations are combined to delineate, identify and locate the possible physicochemical processes acting in the Aguadulce groundwater. Two main aquifers can be distinguished: the carbonate or lower aquifer of Triassic age, and the calcodetritic or upper aquifer of Plio-Quaternary age. Groundwaters from the latter are more saline and, assuming all chlorinity originates from seawater intrusion, the seawater contribution to their composition would be up to 7%. Nevertheless the carbonate aquifer appears not to be homogeneous: it is compartmentalised into 4 zones where different processes explain the different groundwaters compositions. Zone 4 samples (E margin of the carbonate aquifer) resemble those of the Plio-Quaternary aquifer, where calcite precipitation, dolomite and gypsum dissolution and some cation exchange (water–rock interaction) together with seawater–freshwater mixing occur. In contrast, water–rock interaction predominates in zones 1 and 3 of the carbonate aquifer. Moreover, zone 2 samples, located between zones 1 and 3, are explained by water–rock interaction in addition to mixing with Plio-Quaternary aquifer waters. The combination of geochemical simulations with GIS and hydrogeochemical analyses has proven to be effective in identifying and locating the different physicochemical processes in the aquifer areas, thus improving understanding of hydrogeochemistry in complex aquifers. |
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0883-2927 |
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THL @ christoph.kuells @ Daniele2013 |
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19 |
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Liu, Y.; Jin, M.; Wang, J. |
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Insights into groundwater salinization from hydrogeochemical and isotopic evidence in an arid inland basin |
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2018 |
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Hydrological Processes |
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32 |
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20 |
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3108-3127 |
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deuterium excess, groundwater salinization, Northwest China, Manas River basin, stable isotopes |
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Abstract In the Manas River basin (MRB), groundwater salinization has become a major concern, impeding groundwater use considerably. Isotopic and hydrogeochemical characteristics of 73 groundwater and 11 surface water samples from the basin were analysed to determine the salinization process and potential sources of salinity. Groundwater salinity ranged from 0.2 to 11.91 g/L, and high salinities were generally located in the discharge area, arable land irrigated by groundwater, and depression cone area. The quantitative contributions of the evaporation effect were calculated, and the various groundwater contributions of transpiration, mineral dissolution, and agricultural irrigation were identified using hydrogeochemical diagrams and δD and δ18O compositions of the groundwater and surface water samples. The average evaporation contribution ratios to salinity were 5.87% and 32.7% in groundwater and surface water, respectively. From the piedmont plain to the desert plain, the average groundwater loss by evaporation increased from 7% to 29%. However, the increases in salinity by evaporation were small according to the deuterium excess signals. Mineral dissolution, transpiration, and agricultural irrigation activities were the major causes of groundwater salinization. Isotopic information revealed that river leakage quickly infiltrated into aquifers in the piedmont area with weak evaporation effects. The recharge water interacted with the sediments and dissolved minerals and subsequently increased the salinity along the flow path. In the irrigation land, shallow groundwater salinity and Cl− concentrations increased but not δ18O, suggesting that both the leaching of soil salts due to irrigation and transpiration effect dominated in controlling the hydrogeochemistry. Depleted δ18O and high Cl− concentrations in the middle and deep groundwater revealed the combined effects of mixing with paleo-water and mineral dissolution with a long residence time. These results could contribute to the management of groundwater sources and future utilization programs in the MRB and similar areas. |
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THL @ christoph.kuells @ doi:10.1002/hyp.13243 |
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178 |
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