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Integrated simulation of surface water-groundwater systems driven by advanced tracer and inversion methods
Project funded by own resources
Project title Integrated simulation of surface water-groundwater systems driven by advanced tracer and inversion methods
Principal Investigator(s) Schilling, Oliver
Project Members Currle, Friederike
Organisation / Research unit Departement Umweltwissenschaften / Hydrogeologie (Schilling)
Project start 01.07.2022
Probable end 30.06.2026
Status Active
Abstract

In this PhD project, the aim is the investigation of the transport behavior of different solutes and microbes in groundwater and surface water on a wellfield scale, with the goal to improve the quantification of river-aquifer interactions with tracers and the delineation of groundwater wellhead protection zones. To this end, recent methodological developments of three separate domains will be combined: Online microbial and solute tracer monitoring (i.e., analytics), integrated hydrological flow and transport simulations (i.e., numerical flow modelling), and fully-automated model calibration (i.e., mathematical inversion). Through the combination of these recent developments, it will finally become possible to delineate protection zones for drinking water supply wells that robustly reflect the pathways and travel times of both microbial pathogens and contaminants. The current protection zone delineation approaches for drinking water wells are exclusively based on solutes and never on microbial tracers, although it is well understood that microbes travel faster than solutes and protection zones should primarily protect against microbial contamination. An important part of the project will focus on the implementation of a modified colloid filtration theory approach for microbial transport simulations in the integrated surface-subsurface hydrological model HydroGeoSphere. The project is conducted in close collaboration with Université Laval (Prof. R. Therrien), Université de Neuchâtel (Prof. P. Brunner & Prof. D. Hunkeler) and Eawag (Prof. R. Kipfer).

Keywords microbes, tracers, groundwater, surface water-groundwater interactions, modelling
Financed by University funds

Cooperations ()

  ID Kreditinhaber Kooperationspartner Institution Laufzeit - von Laufzeit - bis
4658641  Schilling, Oliver  Therrien, René, Prof.  Université Laval  01.07.2022  30.06.2026 
4658642  Schilling, Oliver  Brunner, Philip, Prof.  Université de Neuchâtel  01.07.2022  30.06.2026 
4658643  Schilling, Oliver  Hunkeler, Daniel, Prof.  Université de Neuchâtel  01.07.2022  30.06.2026 
4658644  Schilling, Oliver  Kipfer, Rolf, Prof.  Eawag  01.07.2022  30.06.2026 
   

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