HR: 0800h
AN: H21E-1067    [Abstracts]
TI: Applied Dual-gas Tracing of a Fissured Sandstone Aquifer
AU: * Elliot, T
EM: t.elliot@qub.ac.uk
AF: Queen's University Belfast, Environmental Engineering Research Centre (EERC), Environmental Tracers Laboratory (ETL), School of Civil Engineering, David Keir Building, Stranmillis Road, Belfast, NI BT9 5AG United Kingdom
AU: Kalin, R M
EM: r.kalin@qub.ac.uk
AF: Queen's University Belfast, Environmental Engineering Research Centre (EERC), Environmental Tracers Laboratory (ETL), School of Civil Engineering, David Keir Building, Stranmillis Road, Belfast, NI BT9 5AG United Kingdom
AU: Reid, S
EM: s.reid@qub.ac.uk
AF: Queen's University Belfast, Environmental Engineering Research Centre (EERC), Environmental Tracers Laboratory (ETL), School of Civil Engineering, David Keir Building, Stranmillis Road, Belfast, NI BT9 5AG United Kingdom
AU: Anderson, S
EM: s.anderson@qub.ac.uk
AF: Queen's University Belfast, Environmental Engineering Research Centre (EERC), Environmental Tracers Laboratory (ETL), School of Civil Engineering, David Keir Building, Stranmillis Road, Belfast, NI BT9 5AG United Kingdom
AU: Cusack, A T
EM: c1028503@qub.ac.uk
AF: Queen's University Belfast, Environmental Engineering Research Centre (EERC), Environmental Tracers Laboratory (ETL), School of Civil Engineering, David Keir Building, Stranmillis Road, Belfast, NI BT9 5AG United Kingdom
AB: Dissolved noble gas tracing is being used in the Environmental Tracers Laboratory at Queen's University Belfast as a novel 'environmentally-friendly' approach to characterise subsurface structure and transport properties for aquifer systems. A single-borehole slug injection (so-called 'push-pull') tracer test has been conducted in the fissured, permeable Sherwood Sandstone aquifer using both dissolved Krypton (Kr) and Xenon (Xe) gases applied simultaneously in a "push" phase lasting 12 hours. Input concentrations (C0) for both tracers initially were chosen to be equimolar specifically to test for the possible role of diffusive exchange between fissures and matrix systems over advective exchange. The simultaneous breakthrough curves show two characteristic peaks and long-tailing, which clearly demonstrate the dual-permeability nature of this important aquifer over the spatial and temporal scale investigated.
UR: http://www.prb-net.qub.ac.uk/eerg/eerg.htm
DE: 1829 Groundwater hydrology
DE: 1832 Groundwater transport
DE: 1894 Instruments and techniques
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting