Print Email Facebook Twitter Using tracer data to calibrate a flexible, topography driven conceptual hydrological model Title Using tracer data to calibrate a flexible, topography driven conceptual hydrological model Author De Looij, V.A. Contributor Hrachowitz, M. (mentor) Faculty Civil Engineering and Geosciences Department Water Management Programme Hydrology Date 2014-07-14 Abstract This study explores the possibility of calibrating a conceptual hydrological model to tracer (Oxygen-18) data measured in streamflow with the ultimate goal to predict discharge. The hypothesis is that (changes in) Oxygen-18 concentrations in the stream should tell something about the relative contribution of fast runoff compared to slow runoff (groundwater flow) inside the stream. A conceptual hydrological model incorporating both tracer dynamics and discharge should be able to model this. Using tracer previously measured in the Brugga catchment (South-West Germany) by people of the University of Freiburg, both lumped and FLEX-Topo inspired models are developed and calibrated to this data. Results showed that of all models considered, only a FLEX-Topo inspired model, containing a variable groundwater level that is able to occasionally (partially or wholly) submerge the wetland model structure, was able to predict a decent hydrograph when calibrating purely on tracer data. The results indicate that calibration of a FLEX-Topo inspired model to only tracer data is a real possibility, and opens the door to more sophisticated modelling attempts, for instance calibration on multiple tracers or multiple tracer sampling points. Subject HydrologyTracerIsotopeOxygen-18CalibrationFLEX-TopoModel To reference this document use: http://resolver.tudelft.nl/uuid:90cb2644-c9dd-4db3-b2bf-8d6a596b0afe Embargo date 2015-03-31 Coordinates 47.897583, 7.944243 Part of collection Student theses Document type master thesis Rights (c) 2014 De Looij, V.A. Files PDF Report_Vincent_de_Looij_-_Final.pdf 110.05 MB Close viewer /islandora/object/uuid:90cb2644-c9dd-4db3-b2bf-8d6a596b0afe/datastream/OBJ/view