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), which are the result of the transport of a dye tracer through underground lakes, is reported. Investigations were undertaken on the Furfooz karst sys- tem 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 wa- ter, downstream of this second lake. The report first de- scribes field data (tracer tests in various hydrologic con- ditions) which point towards the double peak being linked to a nonlinear 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.
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Article dans une revue
Hydrogeology Journal, Springer Verlag, 2017, 〈10.1007/s10040-017-1671-4〉
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https://hal.univ-lorraine.fr/hal-01598417
Contributeur : Pauline Collon <>
Soumis le : vendredi 29 septembre 2017 - 15:30:31
Dernière modification le : mardi 29 mai 2018 - 12:51:03

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Lorraine Dewaide, Pauline Collon, Amaël Poulain, Gaetan Rochez, Vincent Hallet. Double-peaked breakthrough curves as a consequence of solute transport through underground lakes: a case study of the Furfooz karst system, Belgium. Hydrogeology Journal, Springer Verlag, 2017, 〈10.1007/s10040-017-1671-4〉. 〈hal-01598417〉

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