Double-peaked breakthrough curves as a consequence of solute transport through underground lakes : a case study of the Furfooz karst system, Belgium

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Résumé

The existence of double-peaked breakthrough curves (BTC) is reported, which are the result of the transport of a dye tracer through underground lakes. Investigations were undertaken on the Furfooz karst system in southern Belgium. In this system, the River Lesse sinks partially into a swallow hole. The water follows a solitary conduit leading to an underground lake that is directly connected to a second underground lake. Double-peaked BTCs were detected in the resurgent water, downstream of this second lake. The paper first describes field data (tracer tests in various hydrologic conditions) which point towards the double peak being linked to a non-linear process that originates within the lakes. Complementary investigations within the lakes show a complex behavior of the dye tracer related to a specific hydrodynamic feature that leads to the separation of the solute plume. A conceptual model of the solute transport within the lakes is proposed. This model emphasizes the physical effect of the lakes on the dye flow-through process.
langueAnglais
journalHydrogeology Journal
étatPublié - 26 sept. 2017

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breakthrough curve
solute transport
karst
lake
dye tracer
water
solute
dye
plume
hydrodynamics
tracer
river
effect
test

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    @article{29f76854c60d45b893c406dc393c9306,
    title = "Double-peaked breakthrough curves as a consequence of solute transport through underground lakes : a case study of the Furfooz karst system, Belgium",
    abstract = "The existence of double-peaked breakthrough curves (BTC) is reported, which are the result of the transport of a dye tracer through underground lakes. Investigations were undertaken on the Furfooz karst system in southern Belgium. In this system, the River Lesse sinks partially into a swallow hole. The water follows a solitary conduit leading to an underground lake that is directly connected to a second underground lake. Double-peaked BTCs were detected in the resurgent water, downstream of this second lake. The paper first describes field data (tracer tests in various hydrologic conditions) which point towards the double peak being linked to a non-linear process that originates within the lakes. Complementary investigations within the lakes show a complex behavior of the dye tracer related to a specific hydrodynamic feature that leads to the separation of the solute plume. A conceptual model of the solute transport within the lakes is proposed. This model emphasizes the physical effect of the lakes on the dye flow-through process.",
    keywords = "Karst, Tracer tests, double-peaked breakthrough curve, underground lake, Belgium",
    author = "Lorraine Dewaide and Vincent Hallet and Amael Poulain and Ga\{"e}tan Rochez and Pauline Collon",
    year = "2017",
    month = "9",
    day = "26",
    language = "English",
    journal = "Hydrogeology Journal",
    issn = "1431-2174",
    publisher = "Springer",

    }

    TY - JOUR

    T1 - Double-peaked breakthrough curves as a consequence of solute transport through underground lakes : a case study of the Furfooz karst system, Belgium

    AU - Dewaide,Lorraine

    AU - Hallet,Vincent

    AU - Poulain,Amael

    AU - Rochez,Gaëtan

    AU - Collon,Pauline

    PY - 2017/9/26

    Y1 - 2017/9/26

    N2 - The existence of double-peaked breakthrough curves (BTC) is reported, which are the result of the transport of a dye tracer through underground lakes. Investigations were undertaken on the Furfooz karst system in southern Belgium. In this system, the River Lesse sinks partially into a swallow hole. The water follows a solitary conduit leading to an underground lake that is directly connected to a second underground lake. Double-peaked BTCs were detected in the resurgent water, downstream of this second lake. The paper first describes field data (tracer tests in various hydrologic conditions) which point towards the double peak being linked to a non-linear process that originates within the lakes. Complementary investigations within the lakes show a complex behavior of the dye tracer related to a specific hydrodynamic feature that leads to the separation of the solute plume. A conceptual model of the solute transport within the lakes is proposed. This model emphasizes the physical effect of the lakes on the dye flow-through process.

    AB - The existence of double-peaked breakthrough curves (BTC) is reported, which are the result of the transport of a dye tracer through underground lakes. Investigations were undertaken on the Furfooz karst system in southern Belgium. In this system, the River Lesse sinks partially into a swallow hole. The water follows a solitary conduit leading to an underground lake that is directly connected to a second underground lake. Double-peaked BTCs were detected in the resurgent water, downstream of this second lake. The paper first describes field data (tracer tests in various hydrologic conditions) which point towards the double peak being linked to a non-linear process that originates within the lakes. Complementary investigations within the lakes show a complex behavior of the dye tracer related to a specific hydrodynamic feature that leads to the separation of the solute plume. A conceptual model of the solute transport within the lakes is proposed. This model emphasizes the physical effect of the lakes on the dye flow-through process.

    KW - Karst, Tracer tests, double-peaked breakthrough curve, underground lake, Belgium

    M3 - Article

    JO - Hydrogeology Journal

    T2 - Hydrogeology Journal

    JF - Hydrogeology Journal

    SN - 1431-2174

    ER -