Abnormal High Radon Exhalation Levels on the Mount Beshtau, North Caucasus

International science and technology conference "Earth science"

Miklyaev, P.S.^1^2 ; Petrova, T.B.^3 ; Sidyakin, P.A.^4

Sergeev Institute of Environmental Geoscience Russian Academy of Sciences (IEG RAS), Ulansky per. 13 build. 2, Moscow

101000, Russia^1

Federal State Unitary Enterprise Research, Technical Center of Radiation-Chemical Safety and Hygiene, Shchukinskaya ul. 40, Moscow

123182, Russia^2

Lomonosov Moscow State University, Faculty of Chemistry, Department of Radiochemistry, Leninskie gory 1 build. 3, GSP-1, Moscow

119991, Russia^3

Pyatigorsk Branch of North Caucasus Federal University, Engineering Faculty, Department of Construction, Ermolov str., 46a, Pyatigorsk

357500, Russia^4

关键词: Atmospheric air;    Fracturing zones;    Measurements of;    Radon concentrations;    Radon exhalation;    Radon exhalation rate;    Radon transport;    Repeated measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022084/pdf
DOI  :  10.1088/1755-1315/272/2/022084

来源: IOP

【 摘 要 】

The measurements of radon exhalation rate, radon concentration in the air, gamma-doze rate and radium content in soils on the Mount Beshtau were carried out. The very high radon levels were discovered in local zone on the western slope. The radon exhalation rate in the anomalous zone achieves 15,000 mBq/m2s, and the radon concentration in the atmospheric air exceeds 4000 Bq/m3. These levels sufficiently exceed the local background. The extremely high values of radon exhalation rate in the anomalous zone cannot be explained by local sources of radon. Anomalous levels of radon exhalation probably result from radon transport out of fracturing zones with convective air flows. This thesis is confirmed by repeated measurements.