title: Extreme variations of air dose rates in east Fukushima.
abstract: This report analyses the data of air (ambient) dose rates measured at 164 points in eastern Fukushima during a period of half a year after 10 June 2011. It is found that at some locations the values decreased or increased extraordinarily although on average the overall dose rates decreased significantly faster than the theoretically predicted rate. Among them the nine most extreme points are selected and analysed. It is found that behind these extraordinary behaviours of air dose rates there exists the combination of wind/rain and artificial structures such as sloped pavements.
authors.affiliation: School of Science and Engineering, Teikyo University, Utsunomiya 320-8551, Japan akimoto@ees.teikyo-u.ac.jp.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Akimoto
mesh_terms: D000388:Air / Q000032:analysis*; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D002588:Cesium Radioisotopes / Q000032:analysis*; D062406:Fukushima Nuclear Accident; D007564:Japan; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods; D011847:Radioactive Fallout / Q000032:analysis; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014887:Weather
chemical_list: D000396:Air Pollutants, Radioactive; D002588:Cesium Radioisotopes; D011847:Radioactive Fallout