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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1111/gwat.12081
|2 doi
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|a pubmed24n0761.xml
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|a eng
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|a Malama, Bwalya
|e verfasserin
|4 aut
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|a Modeling transient streaming potentials in falling-head permeameter tests
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 30.03.2015
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|a Date Revised 21.07.2014
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2013, National Ground Water Association.
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|a We present transient streaming potential data collected during falling-head permeameter tests performed on samples of two sands with different physical and chemical properties. The objective of the work is to estimate hydraulic conductivity (K) and the electrokinetic coupling coefficient (Cl ) of the sand samples. A semi-empirical model based on the falling-head permeameter flow model and electrokinetic coupling is used to analyze the streaming potential data and to estimate K and Cl . The values of K estimated from head data are used to validate the streaming potential method. Estimates of K from streaming potential data closely match those obtained from the associated head data, with less than 10% deviation. The electrokinetic coupling coefficient was estimated from streaming potential vs. (1) time and (2) head data for both sands. The results indicate that, within limits of experimental error, the values of Cl estimated by the two methods are essentially the same. The results of this work demonstrate that a temporal record of the streaming potential response in falling-head permeameter tests can be used to estimate both K and Cl . They further indicate the potential for using transient streaming potential data as a proxy for hydraulic head in hydrogeology applications
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Revil, André
|e verfasserin
|4 aut
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|i Enthalten in
|t Ground water
|d 1979
|g 52(2014), 4 vom: 11. Juli, Seite 535-49
|w (DE-627)NLM098182528
|x 1745-6584
|7 nnns
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| 773 |
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|g volume:52
|g year:2014
|g number:4
|g day:11
|g month:07
|g pages:535-49
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|u http://dx.doi.org/10.1111/gwat.12081
|3 Volltext
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