Authors
M.D. Rowberry, X. Martí, C. Frontera, M.J. Van De Wiel, M. Briestenský
Publication date
2016
Journal
Journal of Environmental Radioactivity
Volume
157
Pages
16-26
Description
Cave radon concentration measurements reflect the outcome of a perpetual competition which pitches flux against ventilation and radioactive decay. The mass balance equations used to model changes in radon concentration through time routinely treat flux as a constant. This mathematical simplification is acceptable as a first order approximation despite the fact that it sidesteps an intrinsic geological problem: the majority of radon entering a cavity is exhaled as a result of advection along crustal discontinuities whose motions are inhomogeneous in both time and space. In this paper the dynamic nature of flux is investigated and the results are used to predict cave radon concentration for successive iterations. The first part of our numerical modelling procedure focuses on calculating cave air flow velocity while the second part isolates flux in a mass balance equation to simulate real time dependence among the …
Total citations
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Scholar articles
MD Rowberry, X Martí, C Frontera, MJ Van De Wiel… - Journal of environmental radioactivity, 2016