Radiometry

This database contains data from radiometric survey. Radiometry means the measurement of the total gamma-ray activity of natural radioactive isotopes on the Earth’s surface, in the past the total exposure rate was measured. The first stage (measurement of exposure rate) was carried out in 1957-1973 using Geiger-Mueller counter; this survey covered the whole territory of the Czech Republic, measured data is stored in [µR/h]. Next stage started in 1976 when total gamma-ray activity was registered simultaneously with gamma-ray spectrometry survey and covers about 60 % of the territory, measured data was stored as total gamma-ray activity [Ur].