Concepts for measuring horizontal groundwater flow directions using the passive flux meter |
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Institution: | 1. Department of Civil and Coastal Engineering, University of Florida, 365 Weil Hall, Gainesville, FL 32611-6450, United States;2. Inter-Disciplinary Program in Hydrologic Sciences, University of Florida, Gainesville, FL 32611-6450, United States;3. Department of Hydraulic Structures and Water Resources Management, Graz University of Technology, Austria;4. Department of Environmental Engineering Sciences, Gainesville, FL 32611-6450, United States |
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Abstract: | The passive flux meter (PFM) is a permeable down-hole device designed to measure the magnitudes of horizontal groundwater specific discharge and contaminant mass flux in porous media. By means of a geometrical analysis of resident tracer transport inside a PFM, this paper introduces two new PFM designs capable of measuring both the direction and magnitude of horizontal water and contaminant fluxes. One design relies on the detection of a single resident tracer over multiple domains within the PFM cross section to determine the magnitude and direction of water flux. The second PFM configuration uses the detected loss of multiple resident tracers in different sectors of the PFM cross section to generate the same characterization of water flux. Both designs rely on the assumption of linear, instantaneous and reversible tracer sorption. |
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