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Information gain by single tracers under steady state and transient flow conditions: the Gårdsjön G1 multiple tracer experiments.

Title data

Lischeid, Gunnar ; Lange, Holger ; Hauhs, Michael:
Information gain by single tracers under steady state and transient flow conditions: the Gårdsjön G1 multiple tracer experiments.
In: Dassargues, Alain (ed.): Tracers and modelling in hydrogeology : proceedings of TraM'2000, the International Conference on Tracers and Modelling in Hydrogeology held at Liège, Belgium, in May 2000. - Wallingford : IAHS , 2000 . - pp. 73-77 . - (IAHS Publication ; 262 )
ISBN 190150221X

Official URL: Volltext

Abstract in another language

Tracer experiments are a common method to obtain spatially integrated information about aquifer properties. However, the uncertainty of unique experiments can rarely be assessed. The Gårdsjön G1 roofed catchment was used to perform a series of steady state experiments with almost identical boundary conditions. Br, Cl, and 2H tracers were applied in parallel. Tracer breakthrough curves are modelled by a two region convection dispersion model. Parameter values determined by inverse modeling critically depend on the underlying assumptions. E.g., weather a tracer is conservative or not cannot be assessed based on the model only. Furthermore, in the case of the Br tracer our experiments exhibit a clear dependency on the temporal scale of the measurements. In spite of very similar boundary conditions, the shapes of breakthrough curves and the corresponding model parameter values of different experiments differ considerably. In addition, transit time probability for steady and transient flow conditions differ substantially.

Further data

Item Type: Article in a book
Refereed: Yes
Additional notes: BAYCEER7435
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Ecological Modelling
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Ecological Modelling > Chair Ecological Modelling - Univ.-Prof. Dr. Michael Hauhs
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 30 Sep 2015 05:56
Last Modified: 30 Sep 2015 05:56
URI: https://eref.uni-bayreuth.de/id/eprint/19909