Effective radium concentration ECRa, product of radium concentration and radon
emanation, is the source term for radon release into the pore space of rocks and the …

Postojna Cave is the largest of 21 show caves in Slovenia. The radon concentration there
was measured continuously in the Great Mountain hall from July 2005 to October 2009 and …

The spatial and temporal variation of 222Rn concentration in three horizontal caves and in
one vertical cave was measured to study the influence of different morphological and …

Radon flux via diffusion from sediments and other materials may be determined in the
laboratory by circulating air through the sample and a radon detector in a closed loop …

Anomalies in the radon (222 Rn) releases in underground environments are one of the
phenomena that can be observed before earthquake occurrence. Continuous …

In general, the rate and timing of calcite precipitation is in part affected by variations in cave
air CO2 concentrations. Knowledge of cave ventilation processes is required to quantify the …

The concentration activity of radon-222 has been monitored, with some interruptions, from
1997 to 2005 in the end section of a slightly rising, dead-end, 38-m long tunnel located in …

We report the results of 3-years of Radon-222 monitoring in six show caves across Europe,
selected with the feature of having only one, or no natural entrance, defined as dead-end …

A simple numerical model was implemented to infer airflow (natural ventilation) in
underground tunnels from the differences in the temporal patterns of radon, 222Rn …

This paper focuses on the measurement and assessment of absorbed doses of radiation in
caves of the Czech Republic, some of which exhibit high activity concentration of radon in …