Terrestrial radiationRadiation emitted from the natural radioactive substances in... comes from the natural radioactive substancesRadioactive substances within the meaning of the Atomic Ener... which exist in various concentrations everywhere on earth. The dose rateThe dose rate is the quotient of dose and time; e.g. the dos... resulting from terrestrial radiationRadiation emitted from the natural radioactive substances in... depends on the geological formations of the subsoil and therefore varies from one location to another. In Germany, an average external radiationEnergy dispersion through matter or space. In atomic physics... doseMeasure of a radiation effect to be indicated more precisely... of 0.5 mSv per year results due to terrestrial radiationRadiation emitted from the natural radioactive substances in...; in some parts of Brazil and India these values are ten times higher.
Area |
Average effective dose mSv/year |
Max. absorbed dose outdoor mGy/year |
Germany |
0.4 |
5 |
India: Kerala, Madras |
4 |
50 |
Brazil: Espirito Santo |
6 |
800 |
Iran: Ramsar |
6 |
850 |
RadiationEnergy dispersion through matter or space. In atomic physics... doseMeasure of a radiation effect to be indicated more precisely... due to terrestrial radiationRadiation emitted from the natural radioactive substances in... in various areas