APPLICATION OF VOLUME SOIL RADON ACTIVITY VARIATIONS IN THE STUDY OF GEODYNAMIC PROCESSES
I.A. Kozlova, A.K. Yurkov, S.V. Biryulin
Yu.P. Bulashevich Institute of Geophysics, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia
Keywords: earthquakes; precursors; forecast; radon; Southern Kuril Islands; monitoring
Abstract
The article presents the possibilities of radon variations application for studying changes in the stress-strain state of rock massif. On the basis of long-term monitoring at the South Kuril geodynamic polygon the methodology of interpretation of volume soil radon activity anomalies is developed. The causal relationship between earthquakes and radon anomalies has been established. It is shown that tectonic events occur after passing the maximum level of the anomaly, and the reflection time depends on the distance between the observation point and the epicenter of the event. The mechanisms of formation of radon anomalies in the zone of compression and extension are proposed.
|
