New method for porewater extraction from claystone and determination of transport properties with results for Opalinus Clay (Switzerland)

Mäder, U.K.; Waber, H.N.; Gautschi, A. (2004). New method for porewater extraction from claystone and determination of transport properties with results for Opalinus Clay (Switzerland). In: Wanty, R.B.; Seal, R.R. (eds.) 11th Internat. Symp. on Water-Rock Interaction - WRI-11 1 (pp. 445-449). London: Taylor & Francis Group

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A new technique to porewater extraction from claystone employs advective displacement of the in situ porewater by traced artificial porewater. Monitoring of tracer breakthrough yields species-specific transport properties. Results for Opalinus Clay from the Mont Terri Research Laboratory indicate that the chemical disturbances due to the method are minimal, and the observed significant differences in transport properties for Br– and 2H are in agreement with existing data. Sampling times are 2–4 months, and observation of tracer breakthrough takes 12–24 months at hydraulic conductivity of ∼10-13 m/s.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences
08 Faculty of Science > Institute of Geological Sciences > Rock-Water Interaction

UniBE Contributor:

Mäder, Urs and Waber, Niklaus

Subjects:

500 Science > 550 Earth sciences & geology

ISBN:

90-5809-641-6

Publisher:

Taylor & Francis Group

Language:

English

Submitter:

Niklaus Waber

Date Deposited:

27 Oct 2014 10:48

Last Modified:

07 Jun 2017 16:11

URI:

https://boris.unibe.ch/id/eprint/59352

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