Anisotropic diffusion at the field scale in a 4-year multi-tracer diffusion and retention experiment – I: Insights from the experimental data

Gimmi, Thomas; Leupin, Olivier X.; Eikenberg, J.; Glaus, Martin A.; Loon, Luc R. Van; Waber, Niklaus; Wersin, Paul; Wang, Hao A. O.; Grolimund, Daniel; Borca, Camelia N.; Dewonck, S.; Wittebroodt, Charles

doi:10.1016/j.gca.2013.10.014

Cited by 45 publications

(49 citation statements)

References 40 publications

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“…Models for sorbing tracers often assume a linear isotherm (Van Loon et al 2004b;Wersin et al 2008Wersin et al , 2010Gimmi et al 2014), leading to a constant distribution coefficient K d and a constant rock capacity factor a according to…”

Section: Concept and Modelling Of The Diffusion Experimentsmentioning

confidence: 99%

“…Details of the determination of ions are given in Palut et al (2003), Van Loon et al (2004b), Wersin et al (2004Wersin et al ( , 2008, Soler et al (2008) and Gimmi et al (2014). Most of the samples were filtered (0.45 or 0.2 lm) prior to analysis.…”

Section: Major Element Chemistry Of Water Samplesmentioning

confidence: 99%

“…Detailed information on the analytical programme for the sub-samples can be found in e.g. Gimmi et al (2014). In general, and depending on the specific composition of the circulating fluid, water content, stable water isotopes, active tracers and major element composition of the aqueous extracts were analysed.…”

Section: Profile Datamentioning

confidence: 99%

“…Palut et al 2003;Van Loon et al 2004b;Wersin et al 2004;Yllera et al Editorial handling: P. Bossart and A. G. Milnes. This is paper #20 of the Mont Terri Special Issue of the Swiss Journal of Geosciences (see Bossart et al 2017, Wersin et al 2008;Gimmi et al 2014). A main interest was the comparison of results with those from laboratory experiments performed on small samples (in the order of a few cm) of the same material.…”

Section: Introductionmentioning

confidence: 99%

“…Representativeness was also an issue for the in situ tests. One of the field studies (Palut et al 2003) suggested the existence of a borehole disturbed zone (BdZ), but all the other studies (Van Loon et al 2004b;Wersin et al 2004;Soler et al 2008;Wersin et al 2008;Gimmi et al 2014) did not report such an effect. Even though some differences in transport and retention properties were observed, the laboratory values obtained in smaller-scale diffusion experiments could generally be confirmed.…”

Section: Introductionmentioning

confidence: 99%

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Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

et al. 2017

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Transport and retardation parameters of radionuclides, which are needed to perform a safety analysis for a deep geological repository for radioactive waste in a compacted claystone such as Opalinus Clay, must be based on a detailed understanding of the mobility of nuclides at different spatial scales (laboratory, field, geological unit). Thanks to steadily improving experimental designs, similar tracer compositions in different experiments and complementary small laboratory-scale diffusion tests, a unique and large database could be compiled. This paper presents the main findings of 20 years of diffusion and retention experiments at the Mont Terri rock laboratory and their impact on safety analysis.

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Section: Concept and Modelling Of The Diffusion Experimentsmentioning

confidence: 99%

Section: Major Element Chemistry Of Water Samplesmentioning

confidence: 99%

Section: Profile Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

et al. 2017

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Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

Leupin

Loon

Gimmi

et al. 2017

Mont Terri Rock Laboratory, 20 Years

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Safety-relevant hydrogeological properties of the claystone barrier of a Swiss radioactive waste repository: An evaluation using multiple lines of evidence

Gautschi

2017

Grundwasser

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In Switzerland, the Opalinus Clay -a Jurassic (Aalenian) claystone formation -has been proposed as the first-priority host rock for a deep geological repository for both low-and intermediate-level and high-level radioactive wastes. An extensive site and host rock investigation programme has been carried out during the past 30 years in Northern Switzerland, comprising extensive 2D and 3D seismic surveys, a series of deep boreholes within and around potential geological siting regions, experiments in the international Mont Terri Rock Laboratory, compilations of data from Opalinus Clay in railway and motorway tunnels and comparisons with similar rocks.The hydrogeological properties of the Opalinus Clay that are relevant from the viewpoint of long-term safety are described and illustrated. The main conclusions are supported by multiple lines of evidence, demonstrating consistency of conclusions based on hydraulic properties, porewater chemistry, distribution of natural tracers across the Opalinus Clay as well as small-and large-scale diffusion models and the derived conceptual understanding of solute transport.

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Anisotropic diffusion at the field scale in a 4-year multi-tracer diffusion and retention experiment – I: Insights from the experimental data

Cited by 45 publications

References 40 publications

Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research

Safety-relevant hydrogeological properties of the claystone barrier of a Swiss radioactive waste repository: An evaluation using multiple lines of evidence

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