Diurnal variation of soil gas radon (222Rn) and carbon dioxide (CO2) concentrations around İzmir Fault Zone (IF)
Bildiriler > Özet Bildiri · 2024
Yazarlar: Mutlu İÇHEDEF, Caner TAŞKÖPRÜ, EMRE TABAR, Gözde TAÇ DUMAN, SALVATORE GIAMMANCO
International Nuclear Sciences and Technologies Conference (INSTEC-24), Türkiye, İzmir, Uluslararası, Sözlü Sunum, Özet Bildiri, 2024-2024, ss 25-25
Özet
<p>Radon is defined as a geodynamic precursor and environmental indicator because it is an inert gas and a member of the uranium decay series. It is reported that soil gas and water radon concentrations show anomalies before and/or after earthquakes and volcanic eruptions. These reports have led to a tendency to use radon anomalies as earthquake precursors and studies on this subject have increased. It is also reported that radon concentrations show meaningful spatial and time-scale variations. Although radon is a good tracer, some physical effects, such as changes in meteorological parameters, affect the migration of the gas into the atmosphere. An earlier work by our research group showed that indoor radon concentrations are slightly higher in the morning (downtime and early hours of the day) and then decreased in the afternoon. Therefore, there is a necessity to study the diurnal variation of soil gas radon along and/or around a fault zone because there is significant attention on radon as a potential earthquake precursor. In this study, we aimed to study the diurnal variation of soil gas radon around the İzmir Fault Zone (IF). Soil gas measurements were performed by RAD7 radon detector and multigas data logger. Measurements were taken between 50 and 70 cm depth. We measured both radon (222Rn) and carbon dioxide (CO2) over 300 locations around the Izmir Fault Zone. This study is supported by the TÜBİTAK 1001 Scientific and Technological Research Projects Support Program: Earthquake Research Call and by Basic Science Research Program-Project No: 121Y404.</p>