title: Comprehensive data on ionising radiation from Fukushima Daiichi nuclear power plant in the town of Miharu, Fukushima Prefecture: The Misho Project.
abstract: Data related to radioactivity released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on 15 March 2011 gathered by residents of Miharu, Fukushima Prefecture, and by Tohoku University are presented. These data sets consist of (1) the earliest radiation monitoring by a Geiger counter in the town, (2) ratios of radioactivity between (132)Te and (137)Cs for a wide area between Fukushima and Tokyo, (3) radiation measurement of soil samples collected from 18 school grounds, and (4) external radiation exposure of 1400 students using OSL badges. By combining and analysing these various data sets, a curve for the cumulative total external exposure as a function of time, with 16 : 00 h on 15 March 2011 being time zero, is obtained. The average cumulative external dosage is estimated to be 10 mSv (σ = 4.2 mSv) over 10 years. In addition, the initiative that the residents of Miharu took in response to the FDNPP accident, which became known as The Misho Project (MP), is documented; in particular, the time at which the municipality instructed the immediate ingestion of iodine tablets by those under the age of 40, 13 : 00 h on 15 March 2011, is assessed.
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Koike
authors.affiliation: Municipal government of Miharu, Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Suzuki
authors.affiliation: Fukujyuji-Temple, Miharu-machi, Tamura-gun, Fukushima, 963-7767, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Genyu
authors.affiliation: Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Kobayashi
authors.affiliation: Nagase Landauer, Ltd, Suwa, Tsukuba, Ibaraki, 300-2686, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Komori
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Otsu
authors.affiliation: Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Sakuma
authors.affiliation: Miharu-machi, Tamura-gun, Fukushima, 963-7758, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sakuma
authors.affiliation: Microsoft Corporation, Redmond, WA, USA.|Alacer Group LLC, Bellevue, WA, USA.
authors.forename: E M
authors.initials: EM
authors.lastname: Sarausad
authors.affiliation: Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Shimada
authors.affiliation: Cyclotron Radioisotope Center, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Shinozuka
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Tamura
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tsukada
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ukai
authors.affiliation: Department of Physics, Tohoku University, Aoba, Sendai, 980-8578, Japan.
authors.forename: T O
authors.initials: TO
authors.lastname: Yamamoto
mesh_terms: D062406:Fukushima Nuclear Accident; D007564:Japan; D055848:Nuclear Power Plants; D011839:Radiation, Ionizing; D011874:Radiometry / Q000706:statistics & numerical data*