Dr. Kay Knöller

Isotope Geochemist/Hydrogeologist
Head of the  Isotop tracer group


Department Catchment Hydrology
Helmholtz-Centre for Environmental Research - UFZ
Theodor-Lieser-Straße 4
D-06120 Halle, Germany

Tel: +49-345-558 5433
Fax: +49-345-558 5449

email: kay.knoeller@ufz.de

Persönliche Bild

Research fields:

Regional isotope patterns to model matter fluxes and flow dynamics in mesoscale river catchments

  • Interpretation of spatial and temporal dynamics of discharge processes
  • Assessment of the catchment scale ecosystem potential for the occurrence of certain target processes (for example: denitrification or sulfate reduction)
  • Assessment of catchment scale matter sources and sinks

Integrating analysis of element cycles (C, N, S) and matter transformations in aquatic systems in

(a) Lignite and metal mining landscapes facing a severe diffuse contamination of the aquatic system with inorganic contaminants such as acid mine drainage and heavy metals,
(b) Porous aquifers used for drinking water production and affected by the diffuse impact of agricultural land use, and
(c) Porous, near surface aquifers contaminated with a variety of petroleum hydrocarbons from single or multiple point sources.

  • Delineation of inorganic contaminant sources,
  • Identification of pathways and mechanisms of inorganic contaminations
  • Assessment of the potential of aquifer systems for a natural attenuation of both inorganic and organic contaminations

Qualitative and quantitative assessment of the interaction between groundwater and surface water bodies

  • Combination of stable isotope with further tracer methods, especially with techniques aiming at the on-site detection of naturally occurring radioactive tracers (e.g. 222Rn)
  • Quantification of large scale groundwater/surface water exchange (isotope balance of lakes)
  • Development of methods for a high resolution-micro scale assessment of groundwater/surface water interaction