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.


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    Titel :

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


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Lee, Do-Hun (Autor:in) / Lee, Eun-Tae (Autor:in) / Lee, Joo-Heon (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.06.1998


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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