Publication Details

Reference Category Journals
DOI / URL link
Title (Primary) Diurnal radon variations in the upper soil layers and at the soil-air interface related to meteorological parameters
Author Schubert, M.; Schulz, H.;
Journal Health Physics
Year 2002
Department ANA;
Volume 83
Language englisch;
Keywords radon; soil; environmental transport; radiation, environmental
Abstract

Measurements of the radon concentration in a column (1 m2 x 2 m) consisting of a homogenous mixture of dry sand and uranium tailings have been performed to obtain information on the radon transport under well defined conditions. The dependence of the radon concentration has been exclusively studied on the soil/air temperature gradient and on the wind speed. The soil moisture content has been kept constant. Significant diurnal variations of the radon concentration were detected in the uppermost soil layer and at the soil/air interface. Such a behavior was not found in 30 cm and deeper soil layers. It is argued that the diurnal radon variation in the uppermost soil layer is mainly associated with the diurnal inversion of the soil/air temperature gradient giving rise to a convective soil gas migration additional to the common upward diffusion processes, whereas the diurnal variation of the radon concentration at the soil/air interface is caused by the interplay of the temperature gradient and the wind speed. No impact of atmospheric pressure variations on the radon migration has been observed.

ID 6002
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=6002
Schubert, M., Schulz, H. (2002):
Diurnal radon variations in the upper soil layers and at the soil-air interface related to meteorological parameters
Health Phys. 83 , 91 - 96