Transit times of water under steady stormflow conditions in the Gårdsjön G1 catchment |
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Authors: | Benny Selle Holger Lange Gunnar Lischeid Michael Hauhs |
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Affiliation: | 1. Institute of Earth and Environmental Science, University of Potsdam, Potsdam‐Golm, Germany;2. Norwegian Forest and Landscape Institute, ?s, Norway;3. Leibniz Centre for Agricultural Landscape Research, Institute of Landscape Hydrology, Müncheberg, Germany;4. Ecological Modelling, University of Bayreuth, Bayreuth, Germany |
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Abstract: | In this paper we report on a series of replicated tracer experiments with deuterium conducted under controlled, steady stormflow conditions at the Gårdsjön G1 catchment in south‐western Sweden. In five different years, these experiments were carried out in a subcatchment of G1. Deuterium was applied as a narrow pulse so that distributions of water transit times could be directly inferred from the observed tracer breakthrough curves. Significantly different transit times of water were observed under similar experimental conditions. Coefficients of variation for estimated mean transit times were greater than 60%, which can be understood as a measure of the interannual variability for this type of experiments. Implications for water transit times under more natural flow conditions as wells as for future experimentation are discussed. Copyright © 2015 John Wiley & Sons, Ltd. |
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Keywords: | travel time distribution groundwater age connectivity |
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