Courbes de restitution à double pics comme conséquence du transport de soluté à travers des lacs souterrains: le cas d’étude du système karstique de Furfooz, Belgique

Autor: Dewaide, Lorraine, Collon, Pauline, Poulain, Amaël, Rochez, Gaetan, Hallet, Vincent
Přispěvatelé: Université de Namur [Namur] (UNamur), GeoRessources, Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Centre de recherches sur la géologie des matières premières minérales et énergétiques (CREGU)-Institut national des sciences de l'Univers (INSU - CNRS)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Hydrogeology Journal
Hydrogeology Journal, Springer Verlag, 2018, 26 (2), pp.641-650. ⟨10.1007/s10040-017-1671-4⟩
ISSN: 1431-2174
1435-0157
Popis: International audience; 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.Note : A correction of this paper has also been published in Sep 2019 and can be downloaded here as supplementary material
Databáze: OpenAIRE
Externí odkaz: