IDENTIFICATION OF ANOMALOUS RADON CONCENTRATIONS DUE TO GEODYNAMIC PROCESSES BY ELIMINATION OF RN VARIATIONS CAUSED BY OTHER FACTORS

It has been suggested that temporal variations of radon (Rn) concentra tions in various media may be used as a possible predictive indicator of seismic activity. However, observed Rn measurements are a function of a number of different physical processes including seismic activity . This paper describes a generalized approach to removing 'noise compo nents' from the observed data to leave a residual component of radon c oncentration that reflects geodynamic processes at depth. The approach is demonstrated using data gathered in Israel at the time of the 1992 October 12 Giza earthquake in Egypt.