Seasonal variations of radon concentration in soil air in different geological conditions on the example of Estonia

Geologija ◽  
2015 ◽  
Vol 56 (4) ◽  
Author(s):  
Krista Jüriado ◽  
Valter Petersell ◽  
Anto Raukas
Keyword(s):  
Seasonal Variations ◽  
Radon Concentration ◽  
Soil Air ◽  
Geological Conditions

Daily and seasonal variations in radon activity concentration in the soil air

2014 ◽  
Vol 160 (1-3) ◽  
pp. 222-225 ◽  
Author(s):  
M. M llerova ◽  
K. Holy ◽  
M. Bulko
Keyword(s):  
Seasonal Variations ◽  
Activity Concentration ◽  
Soil Air ◽  
Radon Activity

Annual average and seasonal variations of residential radon concentration for all the Italian Regions

2005 ◽  
Vol 40 (2-6) ◽  
pp. 686-694 ◽  
Author(s):  
F. Bochicchio ◽  
G. Campos-Venuti ◽  
S. Piermattei ◽  
C. Nuccetelli ◽  
S. Risica ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Radon Concentration ◽  
Annual Average ◽  
Italian Regions ◽  
Residential Radon

scholarly journals Analysis of Mathematical Model for Migration Law of Radon in Underground Multilayer Strata

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Wei Zhang ◽  
Dongsheng Zhang ◽  
Xufeng Wang ◽  
Mengtang Xu ◽  
Hongzhi Wang
Keyword(s):  
Mathematical Model ◽  
Radon Concentration ◽  
Chemical Properties ◽  
Separation Process ◽  
Distribution Law ◽  
Geological Conditions ◽  
Different Depths ◽  
The Mathematical Model ◽  
Migration Law

This paper summarized the separation process of radon based on its geophysical-chemical properties. Taking into account the geological conditions of mining, the mathematical model of radon migration in underground multilayer strata (UMS) was established to investigate the distribution law of radon concentration in UMS. It was found that the distribution of radon concentration in UMS is affected by both the properties of the strata and the depth of cover and the radon concentration law varies at different depths even in the same layer stratum. At last, in order to validate the derivation result of the mathematical model of radon migration in UMS, the actual measured values (AMV) and the calculated values (CV) were compared further. As a result, the CV was found to be approximately equal to the AMV with deviation values (DV) less than 5%, which indicates that the derivation result of the mathematical model of radon migration in UMS is correct.

Normal seasonal variations for atmospheric radon concentration: a sinusoidal model

2015 ◽  
Vol 139 ◽  
pp. 149-153 ◽  
Author(s):  
Koseki Hayashi ◽  
Yumi Yasuoka ◽  
Hiroyuki Nagahama ◽  
Jun Muto ◽  
Tetsuo Ishikawa ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Radon Concentration ◽  
Sinusoidal Model ◽  
Atmospheric Radon

scholarly journals Fault zones and their influence on the radon concentration in the soil air in the territory of Belarus

2014 ◽  
Vol 34 ◽  
pp. 69-77
Author(s):  
A.V. Matveyev ◽  
◽  
M.I. Avtushko ◽  
A.K. Karabanov ◽  
L.A. Nechiporenko ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Fault Zones ◽  
Soil Air

Comparison of Predicted and Measured Variations of Indoor Radon Concentration

1988 ◽  
Vol 24 (1-4) ◽  
pp. 231-235 ◽  
Author(s):  
H. Arvela ◽  
A. Voutilainen ◽  
I. Mäkeläinen ◽  
O. Castrén ◽  
K. Winqvist
Keyword(s):  
Seasonal Variations ◽  
Radon Concentration ◽  
Pressure Difference ◽  
Indoor Radon ◽  
Indoor Radon Concentration ◽  
Entry Rate ◽  
Concrete Walls ◽  
Factors Affecting ◽  
Air Infiltration ◽  
Concentration Ratios

Abstract Prediction of the variations of indoor radon concentration were calculated using a model relating indoor radon concentration to radon entry rate, air infiltration and meteorological factors. These calculated variations have been compared with seasonal variations of 33 houses during 1-4 years, with winter-summer concentration ratios of 300 houses and the measured dirunal variation. In houses with a slab in ground contact the measured seasonal variations are quite often in agreement with variations predicted for nearly pure pressure difference driven flow. The contribution of a diffusion source is significant in houses with large porous concrete walls against the ground. Air flow due to seasonally variable thermal convection within eskers strongly affects the seasonal variations within houses located thereon. Measured and predicted winter-summer concentration ratios demonstrate that, on average, the ratio is a function of radon concentration. The ratio increases with increasing winter concentration. According to the model the diurnal maximum caused by a pressure difference driven flow occurs in the morning, a finding which is in agreement with the measurements. The model presented can be used for differentiating between factors affecting radon entry into houses.

Sign in / Sign up

Export Citation Format

Share Document