In the stream-aquifer setting entered by nonpoint source contaminants, numerical simulation analyses for the coupled advection-dispersion and Richards equations were performed to evaluate and quantify the impacts of transport controlling factors on the relationship between average concentration of saturated aquifer <Cs(t)> and groundwater outflow concentration <Cq(t)>, and on the dynamic responses of <Cs(t)> and <Cq(t)> variables. As compared to the previous studies, the unique features of this study were to include unsaturated flow effect and to provide the physical basis and quantification for the <Cs(t)>—<Cq(t)> relationship. Numerical simulation results showed that <Cs(t)> —<Cq(t)> relations exhibited nonlinear, looping behaviour and were sensitive to the changes of dispersivity and aquifer thickness parameters. Furthermore, <Cs(t)> and <Cq(t)> responses were significantly affected by these two factors of dispersivity and aquifer thickness. For unsaturated-saturated flow condition, the significant impact of dispersivity values on the groundwater outflow concentration response <Cq(t)> might have an important implication for modeling the <Cq(t)> responses.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Determining the relationship between average concentration of saturated aquifer and groundwater outflow subject to nonpoint source contaminants


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Lee, Do-Hun (author) / Lee, Eun-Tae (author) / Lee, Joo-Heon (author)

    Published in:

    Publication date :

    1998-06-01


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    The Role of Groundwater as a Source of Nutrients and Contaminants

    Simmons, G. / Reay, W. | British Library Conference Proceedings | 1991


    Removing Groundwater Contaminants Through Irrigation

    British Library Online Contents | 1995



    Method for determining response relationship between pollutant concentration and traffic flow

    CHU YANGXI / ZHU RENCHENG / HU JINGNAN et al. | European Patent Office | 2024

    Free access