Variability of radon distribution in the atmospheric surface layer over the land of middle latitudes

Anisimov, S. V.; Dmitriev, E. M.; Aphinogenov, K. V.; Guriev, A. V.; Kozmina, A.S.

doi:10.1088/1755-1315/231/1/012006

Cited by 4 publications

(1 citation statement)

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“…The largest gradient of thoron volumetric activity occurs below 0.5 m at night. So the thoron volumetric activity already above 4 m is always very small and does not depend on time of day in contrast to the volumetric activity of surface 222 Rn, which is considerably varied over the day, especially below 2 m [17]. The presented data agree with the results obtained by direct near-surface measurements of 222 Rn and 220 Rn activities [18].…”

Section: Results and Conclusionsupporting

confidence: 86%

Variability of thoron distribution in the surface atmosphere at Borok Geophysical Observatory

Anisimov

Dmitriev²,

Aphinogenov³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The variability of radon-220 (thoron) distribution in the surface atmosphere is investigated by mathematical modeling of thoron turbulent transport, based on the data of continuous field natural observations at Borok Geophysical Observatory (Central Russia). The thoron flux from the surface was set according to the observations. Variations of turbulent diffusion coefficient altitude profiles were calculated by the observations of wind velocity pulsations at two altitudes made synchronously on the same location. The altitude profiles of thoron volumetric activity typical for the atmospheric surface layer are estimated. It is shown that the thoron volumetric activities at any altitudes vary concurrently, but the largest thoron volumetric activity, as well as its gradient, occurs below 0.5 m at nighttime.

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Section: Results and Conclusionsupporting

confidence: 86%