Цитата(Dozik @ 24.8.2012, 3:12)

Но средняя скорость миграции по вертикали - порядка 1-2 см в год.
Какой упрямый. Уфф. 2см в год и конец.
Вот 2 ссылки, меньше 2х месяцев с катастрофы и уже до 5-6 сантиметров и глубже.
www.terrapub.co.jp/journals/GJ/pdf/4604/46040287.pdf
Depth profiles of radioactive cesium and iodine released from the Fukushima Daiichi nuclear power plant in different agricultural fields and forests
TAKESHI OHNO, Department of Chemistry, Faculty of Science, Gakushuin University
Sampling was carried out on
April 23 and 24, 2011, at the Fukushima Agricultural Technology Centre, which is located 60 km west of the Fukushima Daiichi nuclear power plant.
We investigated the depth distributions of 134Cs, 137Cs, and 131I in three different types of agricultural fields and a cedar forest. Our results demonstrate that more than 90% of the radionuclides were distributed within
6 cm of the surface at the wheat field and within
4 cm of the surface at the rice paddy, orchard, and cedar forest.
www.terrapub.co.jp/journals/GJ/pdf/2012e/46010073.pdf
Vertical profiles of Iodine-131 and Cesium-137 in soils in Fukushima Prefecture related to the Fukushima Daiichi Nuclear Power Station Accident
KAZUYA TANAKA, Institute for Sustainable Sciences and Development, Hiroshima University,
Soil core samples were taken on
April 13, 2011 at three sites in Fukushima prefecture: Hiwada in Koriyama-city; two cores were obtained in Yabuki in Nishi-Shirakawa-county, and Iizaka in Fukushimacity. The distances of the three sites from the Fukushima Daiichi Nuclear Power Station are 55 km and 65 km.
The vertical profiles in Fig. 1 show that iodine and cesium were distributed close to the surface. Proportions of contents at depths of
0–5 cm to total amounts were more than
87% for cesium-137 at the three sites,