@article{oai:nagoya.repo.nii.ac.jp:00028041, author = {千葉, 茂樹 and Chiba, Shigeki}, journal = {名古屋大学年代測定研究}, month = {Mar}, note = {In May of 2018, the author investigated the air radiation dose (1 m above the ground, γray) at the Mt. Takamatsuyama and the foot of a mountain in Fukushima-City. The range of the radiation dose was 0.14~0.77 μSv/h, and the average value was 0.39μSv/h. Decontamination of the foot of the Mt. Takamatsuyama was conducted from 2014 to 2017. However, according to this survey, the radiation is falling at the residential area, but is being high at this mountain and farmland. In October to December of 2018, the author investigated the air radiation dose (1 m above the ground, γ ray) at the Mt. Shibayama. This mountain is located in the boundary of Iwaki-City and Furudono-Town, Hirata- Village. In the top of this mountain is a natural park called “Shibayama-koh-en”. Only the park at the top of the mountain was decontaminated. According to this survey, the range of the radiation dose was 0.06~1.71μSv/h, and the average value was 0.30μSv/h. There were many spots of high radiation dose at the ridge. And, in many cases, these spots were under the high trees. This cause is considered because the radioactive material adhered to leaves fell off and it gathered in the ground. The radiation dose rate the annual additional exposure dose of the general public is below 1mSv (0.23μSv/h). However, the radiation dose rate in this area is far from this value., 2018年5月,高松山(福島市)を調査した.測定点は358,空間放射線量率(地上1m)は0.14~0.77μSv/h,平均は0.39μSv/hである.この地域では,住宅の除染は確認できたが,山や農地の除染は行われていない.2018年10~12月,芝山(いわき市・古殿町・平田村)を調査した.測定点は801,空間放射線量率(地上1m)は0.06~1.71μSv/h,平均は0.30μSv/hである.山頂付近の稜線に,高い空間放射線量率の地点が多数あった.高い空間放射線量率の地点の多くは,高い木の真下であった.この原因は,放射性物質が葉に付着し,これが落下し地面に集積したと考えられる.}, pages = {63--68}, title = {福島第一原発事故による福島県の汚染の実態,2018年 : 高松山(福島市)・芝山(いわき市・古殿町・平田村)}, volume = {3}, year = {2019} }