80 | 81
Cumulate deposits of Cesium (Cs-134 and Cs-137) and doses estimated by MEXT (5 mSv, 10 mSv, 20 mSv) 5 mSv
20 mSv
30 km
20 km 10 mSv
Fukushima Dai-ichi
Fukushima Dai-ni
Effective doses due to external irradiation (mSv/year) Population
20 10
200 000 - 350 000
5 Deposits of Cs-134/Cs-137 (kBq/m2)
50 000 - 100 000
6 000 รก 30 000
20 000 - 50 000
3 000 รก 6 000 10 000 - 20 000
1 000 รก 3 000
0 - 10 000
600 รก 1 000 300 รก 600
0
5
10
20
30
40 km
Figure 7-7 Soil contamination (Cs-137 + 134) caused by the Fukushima accident and expected effective doses due to external irradiation in the first year 63
63 | Source: /22/