1 research outputs found
Seasonal variation of radon and CO2 in the Važecká Cave, Slovakia
The continuous monitoring of 222Rn activity concentration, CO2 concentration, and microclimatologic
parameters (internal air temperature and relative humidity) in the Važecká Cave (Northern Slovakia) is being
carried out at three monitoring stations, namely, Gallery, Lake Hall, and Entrance Hall. Radon activity concentration and CO2 concentration exhibited a clear annual variation. The daily average of radon concentration ranged
1300–27 700 Bq/m3 at the Lake Hall station and 3600–42 200 Bq/m3
at the Gallery station. Radon reached its
maximum in the summer months, from June to September. The annual maximum of CO2 concentration is registered approximately one month later than radon maximum. The annual variation of radon and CO2 is controlled
by the seasonal change of ventilation regime associated with the seasonal variation of the difference between
the temperature measured inside the cave and the atmospheric temperature