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- W2074808486 abstract "We use a streamtube based decomposition and a recently developed, simple relationship between tracer concentrations and ages to estimate groundwater age distributions. The decomposition assumes that an age distribution can be approximated using a superposition of linearly independent streamtubes. Transport in each streamtube is modeled with inverse Gaussian functions, the parameters of which are inferred from radiometric tracer concentrations. Three simple sampling methods are considered for weakly and moderately heterogeneous aquifers and the method gives reasonable approximations in both systems. The method is sensitive to errors in the measured concentrations but some of these errors are easily identifiable and a range of plausible age distributions can still be found. The method was then tested in a highly heterogeneous system and reasonable estimates of the age distribution were also obtained. The simplicity of this method and its insensitivity to the heterogeneity structure suggest that this approach may be an effective tool for obtaining estimates of age distributions in natural systems." @default.
- W2074808486 created "2016-06-24" @default.
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- W2074808486 creator A5010997178 @default.
- W2074808486 date "2014-04-01" @default.
- W2074808486 modified "2023-10-14" @default.
- W2074808486 title "Approximating groundwater age distributions using simple streamtube models and multiple tracers" @default.
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- W2074808486 doi "https://doi.org/10.1016/j.advwatres.2014.02.001" @default.
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