APPLICATION OF RADON ISOTOPES TO STUDY ROCKS STRESS STATE VARIATIONS IN EARTHQUAKE PREDICTION

The results of interpretation monitoring observations radon-220 (thoron) and radon-222 observations, carried out in 2002-2004 on the Northern Tien-Shan, are presented. Prognostic capabilities thoron as a short-term earthquakes precursor shown. It is noted that anomalies more contrast comparison with radon-222. Insufficient explained by methodological seismic radon stations. behavior during earthquake preparation agrees previously established spatial-temporal patterns for (Kozlova et al., 2021 Radon isotopes most suitable process using gases part underground atmosphere. prospect other limited absence their continuous generation, presence cumulative effect, difficulty registration. above also applies to use prognostic purposes variations content chemical compounds dissolved groundwater.