Chemical and isotopic assessment of surface water–shallow groundwater interaction in the arid Grande river basin,North-Central Chile

ABSTRACT

This paper analyses the composition of surface water and shallow groundwater in the Grande River basin, North-Central Chile, using this information to characterize water interactions. Chemical and isotopic data for surface water and groundwater (7 and 6 sampling locations, respectively) were obtained from three sampling campaigns performed in March–April (autumn), August–September (late winter) and December (early summer) 2012. Precipitation samples were also collected. Data was processed using spatial distribution charts, Piper and Stiff diagrams, and multivariate analysis. In general, the results for each method converge on a high degree of connectivity between surface water and shallow groundwater in the study area. Furthermore, approximately a 10% of groundwater contribution to the surface flow discharge was estimated for a particular reach. This multi-method approach was useful for the characterization of surface water–groundwater interactions in the Grande River basin, and may become a suitable and replicable scheme for studies in arid and semi-arid basins facing similar water management challenges.

Editor D. Koutsoyiannis; Associate editor B. Dewals     

Gull-derived trace elements trigger small-scale contamination in a remote Mediterranean nature reserve

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近断层地震动作用下LRB隔震储罐地震反应特征研究

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Analyzing Effects of Shrub Canopy on Throughfall and Phreatic Water Using Water Isotopes,Western China

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Geochemistry of groundwater in front of a warm‐based glacier in Southeast Greenland

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海水硝酸盐氮、氧同位素组成研究进展

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新疆阿吾拉勒山西段穷布拉克铜矿床流体包裹体和碳氧硫同位素研究

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胶东金青顶金矿床成矿流体来源的黄铁矿微量元素及He-Ar同位素证据

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