Published online 2013 Aug 30
located 170 km southwest of FNPP
http://www.ncbi.nlm.nih.gov/pubmed/23989894
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3757362/
Emission of spherical cesium-bearing particles from an early stage of the Fukushima nuclear accident
Kouji Adachi, Mizuo Kajino, Yuji Zaizen & Yasuhito Igarashi
[We collected aerosol samples on quartz fiber filters (25 cm × 20 cm) at the Meteorological Research Institute, Tsukuba, Japan, which is located 170 km southwest of FNPP (see the Method section). ]
