Mechanism of the variable γ radiation air absorbed dose rate in the atmosphere
LIN Wu-hui1,2, WANG Shi-yue1, HUANG Ya-ping3, HE Xian-wen4, HUANG Jin-xiu1, YAN Jin-pei5
1. School of Marine Sciences, Guangxi University, Nanning 530004, China; 2. Guangxi Key Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; 3. Fujian Environmental Radiation Supervision Station, Fuzhou 350012, China; 4. Radiation Environment Supervision and Management Station of Guangxi Zhuang Autonomous Region, Nanning 530222, China; 5. Key Laboratory of Global Change and Marine-Atmospheric Chemistry, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
Abstract：In this study, the high-frequency and long-term continuous monitoring data of the γ radiation air absorbed dose rate nearby the three nuclear power plants in Guangxi(Fangchenggang City) and Fujian(Fuqing City and Ningde City) Province was comprehensively discussed from the perspective of different time scales to explore the variable characteristics and regulation mechanism of the γ radiation air absorbed dose rate. At the interannual scale, the γ radiation air absorbed dose rate had a reverse relationship with solar activity on the basis of long term monitoring at Yushandao station in Ningde City from 2014 to 2020. At the seasonal scale, the East Asian monsoon dominantly contributed to the seasonal characteristics of low in summer and high in winter for the γ radiation air absorbed dose rate. At the diurnal scale, tide significantly affected the diurnal fluctuations of the γ radiation air absorbed dose rate. At the hour scale, rainfall event would remove the radon progenies of 214Pb and 214Bi from the atmosphere to the surface soil, leading to a sudden increase in the γ radiation air absorbed dose rate.
林武辉, 王诗玥, 黄亚萍, 何贤文, 黄锦秀, 颜金培. 大气中γ辐射空气吸收剂量率的波动机制[J]. 中国环境科学, 2022, 42(3): 1097-1103.
LIN Wu-hui, WANG Shi-yue, HUANG Ya-ping, HE Xian-wen, HUANG Jin-xiu, YAN Jin-pei. Mechanism of the variable γ radiation air absorbed dose rate in the atmosphere. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(3): 1097-1103.
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