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Published in:
2006 | OriginalPaper | Chapter
The Role of Groundwater-Stream Interactions for Uranium Fluxes in Fluvial Systems
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Based on results from the Wismut region (Germany), this paper concentrates on hydrodynamic aspects of contaminant transport from uranium mining tailings deposits via alluvial groundwater into a receiving stream. The focus is on event-related hydraulic interactions between groundwater and surface water in the hyporheic zone, observed by long-term, quasi- continuous
in situ
measurements with electronic probes. Analyses of time series suggest that interactions between contaminated groundwater, porewater in channel sediments and stream water are highly dynamic, impacting on U-fluxes and mobility. Processes observed during flood events also question established views on run-off generation in streams.