Articles | Volume 30, issue 4
https://doi.org/10.5194/hess-30-1221-2026
https://doi.org/10.5194/hess-30-1221-2026
Research article
 | 
03 Mar 2026
Research article |  | 03 Mar 2026

Modeling surface water and groundwater mixing and mixing-dependent denitrification with bedform dynamics

Xue Ping, Zhang Wen, Yang Xian, Menggui Jin, and Stefan Krause

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Cited articles

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Short summary
Bedform migration affects hyporheic exchange, its impact on surface-groundwater mixing and groundwater-borne contaminant removal in groundwater-fed streams remained unclear. This study numerically simulated how bedform migration influences mixing and mixing-induced nitrate reduction. In fine-to-medium sands, higher bedform migration celerities reshape mixing zones, enhance mixing flux and extent, but reduce nitrate removal rate and efficiency, thus impairing hyporheic purification capacity.
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