Articles | Volume 22, issue 3
https://doi.org/10.5194/hess-22-1713-2018
https://doi.org/10.5194/hess-22-1713-2018
Research article
 | 
08 Mar 2018
Research article |  | 08 Mar 2018

Hydraulic characterisation of iron-oxide-coated sand and gravel based on nuclear magnetic resonance relaxation mode analyses

Stephan Costabel, Christoph Weidner, Mike Müller-Petke, and Georg Houben

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Short summary
Laboratory experiments using water-filled sand and gravel samples with significant contents of iron oxide coatings were performed to identify the relationship between effective hydraulic radius and nuclear magnetic resonance (NMR) response. Our interpretation approach for the NMR data leads to reliable estimates of hydraulic conductivity without calibration, but is limited to coarse material for physical reasons. An NMR-based observation system for iron clogging in boreholes is planned.