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Radioactivity and Air Dose Rate

(2018)

How far does the radiation come from?(2)

Dose rate is affected by topography. When concentration of radiocesium in soil is the same, dose rate becomes higher at the bottom of valley and lower at the top of mountain. This tendency becomes strong at higher elevation.

  • Dose rate is affected by topography.
  • When concentration of radiocesium in soil is the same, dose rate becomes higher at the bottom of valley and lower at the top of mountain.
  • This tendency becomes clear at higher elevation.

Fig.1 Results of analysis of dose rates in simple mountain and valley terrains (Malins et al., 2015a)

Reference

  1. Malins et al. Proc Int Symp Rad Issues Fukushima (2015)