Table 1 Summary of radiocaesium average concentrations in the air of the mountainous village area in the contaminated restricted zone of Fukushima Prefecture for samples with and without rain in the summer of 2014.

From: Rain-induced bioecological resuspension of radiocaesium in a polluted forest in Japan

Sampling site

Conditions

Sample number

Total* sampling span

134Cs activity conc. in air**

137Cs activity conc. in air**

(n)

(yyyy/mm/dd)

(Bq m−3)

(Bq m−3)

Namie (deciduous forest)

With rain

6

2014/06/06–2014/07/18

4.79 (3.47–6.27) × 10–4

1.21 (0.87–1.67) × 10–3

Without rain

6

2014/06/06–2014/07/18

0.19 (0.10–0.26) × 10–4

0.50 (0.28–0.70) × 10–3

Kawamata (coniferous forest)

With rain

7

2014/06/06–2014/08/01

0.76 (0.38–1.18) × 10–4

2.04 (1.10–3.68) × 10–4

Without rain

7

2014/06/06–2014/08/01

0.52 (0.39–0.84) × 10–4

1.48 (1.17–2.34) × 10–4

  1. *Real sampling durations were dependent on the rain sensor response, and several samples were collected during the span.
  2. **Minimum and maximum data are shown in parentheses.
Back to article page