Impacts of Peak‐Flow Events on Hyporheic Denitrification Potential

@article{Singh2022ImpactsOP,
  title={Impacts of Peak‐Flow Events on Hyporheic Denitrification Potential},
  author={Tanu Singh and Shubhangi Gupta and Gabriele Chiogna and Stefan Krause and Barbara I. Wohlmuth},
  journal={Water Resources Research},
  year={2022},
  volume={58}
}
Subsurface flows, particularly hyporheic exchange fluxes, driven by streambed topography, permeability, channel gradient and dynamic flow conditions provide prominent ecological services such as nitrate removal from streams and aquifers. Stream flow dynamics cause strongly nonlinear and often episodic contributions of nutrient concentrations in river‐aquifer systems. Using a fully coupled transient flow and reactive transport model, we investigated the denitrification potential of hyporheic… 

References

SHOWING 1-10 OF 50 REFERENCES
Dynamic Hyporheic Zones: Exploring the Role of Peak Flow Events on Bedform‐Induced Hyporheic Exchange
Discharge varies in space and time, driving hyporheic exchange processes in river corridors that affect biogeochemical cycling and ultimately control the dynamics of biogeochemical hot spots and hot
The Effect of Stream Discharge on Hyporheic Exchange
Streambed morphology, streamflow dynamics, and the heterogeneity of streambed sediments critically controls the interaction between surface water and groundwater. The present study investigated the
Single discharge events increase reactive efficiency of the hyporheic zone
In this study, we investigate the impact of single stream discharge events on water exchange, solute transport, and reactions in the hyporheic zone below a natural in‐stream gravel bar. We set up a
Effects of Successive Peak Flow Events on Hyporheic Exchange and Residence Times
Hyporheic exchange is a crucial control of the type and rates of streambed biogeochemical processes, including metabolism, respiration, nutrient turnover, and the transformation of pollutants.
Impact of Dynamically Changing Discharge on Hyporheic Exchange Processes Under Gaining and Losing Groundwater Conditions
Channel discharge, geomorphological setting, and regional groundwater flow determine the spatiotemporal variability of bedform‐induced hyporheic exchange and the emergence of biogeochemical hot spots
Hyporheic transport and biogeochemical reactions in pool‐riffle systems under varying ambient groundwater flow conditions
At the interface between stream water, groundwater, and the hyporheic zone (HZ), important biogeochemical processes that play a crucial role in fluvial ecology occur. Solutes that infiltrate into the
Effect of low‐permeability layers on spatial patterns of hyporheic exchange and groundwater upwelling
Bed form‐induced hyporheic interactions are characterized by a nested system of flow paths that continuously exchange water, solutes, momentum, and energy. At the local scale, sediment heterogeneity
Flow and Residence Times of Dynamic River Bank Storage and Sinuosity‐Driven Hyporheic Exchange
Hydrologic exchange fluxes (HEFs) vary significantly along river corridors due to spatiotemporal changes in discharge and geomorphology. This variability results in the emergence of biogeochemical
Temporal Hyporheic Zone Response to Water Table Fluctuations
TLDR
Results indicated that fluctuation in the riparian water table controlled seasonal expansion of the hyporheic zone along the planar bed, which could increase the potential for biogeochemical cycling and natural attenuation.
Hyporheic zone denitrification: Controls on effective reaction depth and contribution to whole‐stream mass balance
TLDR
The whole‐stream reaction significance, Rs (dimensionless), was quantified by multiplying Daden‐hz by the proportion of stream discharge passing through the hyporheic zone, and together these two dimensionless metrics, one flow‐path scale and the other reach‐scale, quantify the whole‐ Stream denitrification significance.
...
...