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

被引：18

作者：

Oyarzun, Ricardo ^{[1
,2
]}

Zambra, Sandro ^{[3
]}

Maturana, Hugo ^{[1
]}

Oyarzun, Jorge ^{[1
]}

Aguirre, Evelyn ^{[4
]}

Kretschmer, Nicole ^{[2
]}

机构：

[1] Univ La Serena, Dept Ingn Min, Area Ambiental, La Serena, Chile

[2] Ctr Estudios Avanzados Zonas Aridas, La Serena, Chile

[3] Univ La Serena, Ingn Civil Ambiental, La Serena, Chile

[4] Comis Chilena Energia Nucl, Las Condes, Santiago, Chile

来源：

HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES | 2016年 / 61卷 / 12期

关键词：

integrated water management; isotope tracers; over-allocated basin; RN-222; CLASSIFICATION; CONNECTIVITY; TRACERS; AQUIFER;

D O I：

10.1080/02626667.2015.1093635

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

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.

引用

页码：2193 / 2204

页数：12

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