Deep Physico-Chemical Profiling in a Flooded Mine Shaft: Understanding Water Dynamics in Gardanne Lignite Mine (France)

@inproceedings{morin:hal-05250679,
 abstract = {Neutral Mine Drainage (NMD) in the flooded Gardanne lignite mine (Southern France) remains poorly understood, with persistently high Fe (30 mg/L) and SO₄ (2000 mg/L) concentrations. In 2024, a field campaign conducted in the Gérard shaft, using in-situ profiling and water sampling, reveals a deep tratification. Comparisons with 2011 data indicate a shift from a predominantly static regime with diffusive processes in the deeper part to a more dynamic system, characterized by convective loops and forced convection driven by pumping. Persistent inflows seem to influence the water column structure, shaping its stratification and internal dynamics.},
 address = {Braga, Portugal},
 author = {Morin, Bastien and Collon, Pauline and Vaute, Laurent},
 booktitle = {{IMWA}},
 hal_id = {hal-05250679},
 hal_version = {v1},
 keywords = {shaft ; stratification ; physico-chemical log ; post-mining water management ; lignite ; Gardanne},
 month = {July},
 pdf = {https://brgm.hal.science/hal-05250679v1/file/IMWA2025_Morin_645.pdf},
 title = {{Deep Physico-Chemical Profiling in a Flooded Mine Shaft: Understanding Water Dynamics in Gardanne Lignite Mine (France)}},
 url = {https://brgm.hal.science/hal-05250679},
 year = {2025}
}