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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1111/gwat.13072
|2 doi
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|a eng
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|a Pechstein, Armin
|e verfasserin
|4 aut
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|a Interpretation of Pumping Tests in Heterogeneous Aquifers with Constant Head Boundary
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 09.08.2021
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|a Date Revised 09.08.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021, National Ground Water Association.
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|a This paper investigates the impact of heterogeneity of the transmissivity field on the interpretation of steady-state pumping test data from aquifer systems delimited by constant head boundaries such as aquifers adjacent to lakes or rivers. Spatially variable transmissivity fields are randomly generated and used to simulate the drawdown due to a pumping well located at different distances from a constant head boundary. The steady-state drawdown simulated at different observation wells are then interpreted using the Hantush method (Hantush 1959). The numerical simulations show that, in contrast to the case of infinite aquifer domains, the interpreted transmissivity varies depending on well locations and the separation distance between pumping well and boundary relative to the correlation length. The ensemble-averaged estimated transmissivity varies between the geometric mean and the arithmetic mean, and can even exceed the arithmetic mean in a narrow domain adjacent to the boundary. It approaches the geometric mean of the underlying transmissivity field only if the distance between the pumping well is more than 20 times the characteristic length of the transmissivity field
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Copty, Nadim K
|e verfasserin
|4 aut
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|i Enthalten in
|t Ground water
|d 1979
|g 59(2021), 4 vom: 03. Juli, Seite 517-523
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|g volume:59
|g year:2021
|g number:4
|g day:03
|g month:07
|g pages:517-523
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|u http://dx.doi.org/10.1111/gwat.13072
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