Krypton gas as a novel applied tracer of groundwater flow in a fissured sandstone aquifer

G.W. McNeill, Y.S. Yang, T. Elliot, R M Kalin

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


Dissolved krypton gas (Kr) has been used as a novel, applied and "environmentally-friendly" groundwater tracer in the fissured Sherwood Sandstone aquifer at Queen's University Belfast, Northern Ireland. The tracer test involved a single-well slug injection and withdrawal (so-called "push-pull") technique, to study the dual-permeability nature of the aquifer. Analytical modelling of the tracer transport demonstrates that the shape of the Kr breakthrough curve is a result of two processes: relatively rapid dispersion of the tracer through rock fissures and slower diffusion into the sandstone pore spaces. Characterisation of this dual-permeability nature is important in assessing movement and fate of groundwater contaminants in the aquifer.
Original languageEnglish
Title of host publicationNew approaches characterizing groundwater flow
EditorsK.P. Seiler, S Wohnlich
Number of pages6
Publication statusPublished - 2001
Event31st International-Association-of-Hydrogeologists Congress - Munich, Germany
Duration: 10 Sep 200114 Sep 2001


Conference31st International-Association-of-Hydrogeologists Congress


  • krypton gas
  • novel applied tracer
  • groundwater flow
  • fissured sandstone
  • aquifer


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