Variations of the Environmental Gamma Absorbed Dose Rate in Air in Hong Kong
نویسندگان
چکیده
The Hong Kong Observatory has been continuously monitoring the environmental gamma absorbed dose rates in the air in Hong Kong since the late 1980’s. Spatial and seasonal variations in the environmental gamma absorbed dose rate in the air in Hong Kong have been evaluated. The spatial variations are found to be related to the variation in the geological structure across the territory and the seasonal variations are found to be attributable to changes in the activity concentration of radon in air which in turn may be affected by the direction of the prevailing surface winds, the temperature difference between soil and the overlying air and the moisture content of the soil.
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