Using multiple tracers to quantify groundwater discharge to Yellow river in Weining plain

2nd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Wang, Y.S.^1 ; Chen, X.X.^1 ; Zhang, M.N.^1 ; Li, H.X.^1

Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Baoding, Hebei

071051, China^1

关键词: Ground water discharge;    Ground water inflow;    Hydrogeochemical;    Longitudinal profile;    Mass-balance method;    Surface water and groundwaters;    Trace methods;    Water balance;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/59/1/012023/pdf
DOI  :  10.1088/1755-1315/59/1/012023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

It is important to quantify the hydraulic relationship between surface water and groundwater for developing water resources sustainably. In this study, thirty-six samples were taken and the interaction between river water and groundwater was analyzed on the basis of hydrogeochemical characteristics. Environment tracers such as EC and Cl- were used to calculate groundwater inflows along river flow path by the mass balance method, then it provided a detailed longitudinal profile of groundwater discharge rates. The results show that groundwater discharged to Yellow River mainly in dry season and varied spatially along river length with larger rates in two areas. The groundwater inflows calculated by Cl- and EC mass balances differentiated with each other, which indicated potential uncertainties. Thus, it was necessary to use multiple tracers to quantify groundwater discharge in order to improve accuracy. The representation of the groundwater end-member for environment tracers, the completeness of water balance items and sample resolution were shown to be of vital importance for calculating groundwater inflows using environmental trace method.