Evaluation of Soil Radon Gas and Earthquake on the Fault Zone

Abstract

Four radon monitoring stations are located on the Sivrice Fault Zone of the East Anatolia Fault System (DAFS) which is one of the most important active fault systems that creates big earthquakes in Turkey. Soil radon measurements were performed by using a sensing system that includes a Nuclear Spectroscopic system located at certain monitoring stations which have been placed on the fault zone and by applying passive sensors method using plastic detectors (CR-39) at these same locations. In this study, the soil radon gas values from the monitoring stations were analyzed with different topics and the results: (i) Station II is located on the southern part of the Sivrice Fault Zone that has a higher seismic activity, (ii) There is a relationship between the alterations of soil radon expansion and the occurrence of earthquakes, however, it has been seen that some other parameters (temperature, humidity and pressure) also have an effect on radon expansion, (iii) The radon gas change according to the active and passive detection systems is parallel at each monitoring station but it is different in comparison with other monitoring stations.