Radionuclides from the Fukushima accident in the air over Lithuania: measurement and modelling approaches

Aerosol radioactivity record in Bratislava/Slovakia following the Fukushima accident – A comparison with global fallout and the Chernobyl accident

“…The 134 Cs/ 137 Cs activity ratios in aerosols and precipitation (Tables 4 and 5) were close to one, as has also been found in other laboratories (Masson et al, 2011;Lujaniené et al, 2012). The 134 Cs/ 137 Cs ratio is given by the reactor parameters and its operational history.…”

“…The correlation coefficients for 131 I vs. 7 Be, and 137 Cs vs. 7 Be were r ¼ 0.55 (p ¼ 0.061), and r ¼ 0.59 (p ¼ 0.043), respectively. Lujaniené et al (2012) found a stronger correlation between 131 I, 137 Cs and 7 Be (r ¼ 0.69 and 0.75, respectively), probably because their data set was bigger. As 7 Be is transported from the upper troposphere, the observed correlation supports a similar transport for 131 I and 137 Cs of Fukushima origin to 7 Be, in contrast to normal background conditions when the main source of 137 Cs in groundlevel aerosols is its resuspension from soil, and no correlation between 7 Be and 137 Cs has been observed (Lujaniené, 2000;Pham et al, 2011).…”

Intake of Radionuclides in the Trees of Fukushima Forests 1. Field Study

“…However, radiocesium levels were relatively lower in the bark of newly formed branches and the seedlings planted in the forest after the accident, as shown in Table 3. Nevertheless, high levels of radiocesium have been recycling in Fukushima forests [16,17] and in some other areas [18] in Japan, and also at lesser amounts around the world [19] because of the global spread of the Fukushima aerosols [20]. The forests in rural areas have become enormous unnatural repositories of 137 Cs, which has a long half-life of 30.17 years, despite 134 Cs having a half-life of 2 years.…”

Fukushima Daiichi–Derived Radionuclides in the Ocean: Transport, Fate, and Impacts

“…Therefore, Cs from both atmospheric fallout and direct discharge is expected to follow oceanic transport and mixing pathways. Note, however, that a small fraction of the fallout was transported by atmospheric winds more rapidly across the North Pacific and the rest of the globe, resulting in low but detectable activities of FDNPP Cs in some distant oceanic regions and at many atmospheric sampling stations far removed from Japan (Masson et al 2011, Inoue et al 2012, Lujanienė et al 2012, Min et al 2013, Evangeliou et al 2014, Kumamoto et al 2014.…”