Elevation and groundwater geochemistry, northwestern Massif Central, France.

被引:6
作者
Barbier, J
机构
[1] 45100 Orléans
关键词
groundwater; geochermstry; Massif Central; France; chloride; elevation; contamination;
D O I
10.1016/j.crte.2005.03.005
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In the northwestern Massif Central (France), groundwater chloride concentrations are inversely correlated with elevation, when nitrate-poor. This can be explained by an evolution of the ratio evapotranspiration/rainfall, or of the rainwater composition. Such a relationship may be used for the detection of denitrification phenomena in groundwaters, or nitrate assimilation in surface waters, or for the computation of evapotranspiration, using the chloride mass balance method. However, the main objective will be the selection of groundwaters free of any chloride-bearing contamination, in order to define the natural groundwater quality background.
引用
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页码:763 / 768
页数:6
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