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

Lorraine Dewaide and Pauline Collon and Amaƫl Poulain and Gaetan Rochez and Vincent Hallet. ( 2018 )
in: Hydrogeology Journal, 26:2 (641-650)

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.

Download / Links

BibTeX Reference

@article{dewaide:hal-01598417,
 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.},
 author = {Dewaide, Lorraine and Collon, Pauline and Poulain, Ama{\"e}l and Rochez, Gaetan and Hallet, Vincent},
 doi = {10.1007/s10040-017-1671-4},
 hal_id = {hal-01598417},
 hal_version = {v1},
 journal = {{Hydrogeology Journal}},
 keywords = {Double-peaked breakthrough curve ; Underground lake ; Karst ; Tracer tests ; Belgium},
 number = {2},
 pages = {641-650},
 pdf = {https://hal.univ-lorraine.fr/hal-01598417/file/Manuscript_Dewaide_HydroJ_final_VAuteur.pdf},
 publisher = {{Springer Verlag}},
 title = {{Double-peaked breakthrough curves as a consequence of solute transport through underground lakes: a case study of the Furfooz karst system, Belgium}},
 url = {https://hal.univ-lorraine.fr/hal-01598417},
 volume = {26},
 year = {2018}
}