6:15 PM - 7:30 PM
[MAG38-P03] Correlation-research about fluctuations of the air dose rate and weather conditions
Released radioactive materials take atmospheric condition turbulent flow, do advection and stick to a ground level in the atmosphere. After depositing in a ground level, radioactive materials are floating by atmospheric condition turbulent flow and deposit again to other places. Radioactive materials repeat such process. The weather condition influences such process deeply. The model of the prediction which indicates attenuation of the new spatial dose rate which considered its weather condition is needed.
In this study, we refer to the correlation that the weather conditions and fluctuation of the air dose rate which is considered the radioactive decay.
To determine the correlation coefficients between the fluctuations of the air dose rate and various weather conditions in considering the periodicity obtained by the spectral analysis. As a result, it became clear that there is a strong negative correlation between the fluctuation of the air dose rate and the soil water. This result may be the trigger which makes new methods that can estimate exposure risk.