Radioactivity and Air Dose Rate
（2018）
ＱHow far does the radiation come from?(2)
ＡDose 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)
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Reference
- Malins, A., Okumura, M., Machida, M. and Saito, K. (2015): Topographic effects on ambient dose equivalent rates from radiocesium fallout, Proceedings of Joint International Conference on Mathematics and Computation, Supercomputing in Nuclear Applications and the Monte Carlo Method (M&C + SNA + MC 2015) (CD-ROM)., Nashville.