The research progress on digital measurement of gas Radon in wells(springs) for seismic monitoring

Radon is one of the sensitive components of the underground fluid for earthquake prediction. Digital gas Radon observation has been an important method in seismic monitoring. In recent years, some seismic stations have been able to observe the changes of pre-earthquake anomalies, post-earthquake effects and co-seismic effects of gas Radon data. This paper summarizes and discusses these abnormal changes. In addition, the possible influencing factors in the process of digital gas Radon observation are analyzed and summarized from the aspects of natural environment, instrument system and human interference respectively.