Abstract
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 language | English |
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Title of host publication | New approaches characterizing groundwater flow |
Editors | K.P. Seiler, S Wohnlich |
Pages | 143-148 |
Number of pages | 6 |
Volume | 1&2 |
Publication status | Published - 2001 |
Event | 31st International-Association-of-Hydrogeologists Congress - Munich, Germany Duration: 10 Sept 2001 → 14 Sept 2001 |
Conference
Conference | 31st International-Association-of-Hydrogeologists Congress |
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Country/Territory | Germany |
City | Munich |
Period | 10/09/01 → 14/09/01 |
Keywords
- krypton gas
- novel applied tracer
- groundwater flow
- fissured sandstone
- aquifer