Effect of enhanced ionizing radiation on the cloud electricity after the Fukushima nuclear accident

• 資料種別: 記事
• タイトル: Effect of enhanced ionizing radiation on the cloud electricity after the Fukushima nuclear accident
• 著者・編者: Masatoshi Yamauchi; Masahiko Takeda; Shingo Nagamachi
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2018-03-21
• 出版年（W3CDTF）: 2018-03-21
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 70(48)
• 掲載巻: 70(48)
• ISSN（掲載誌）: 1880-5981
• ISSN-L（掲載誌）: 1343-8832
• 本文の言語コード: eng
• DOI: 10.1186/s40623-018-0780-1; https://doi.org/10.1186/s40623-018-0780-1
• 国立国会図書館永続的識別子: info:ndljp/pid/11067505; https://dl.ndl.go.jp/pid/11067505
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他; https://dl.ndl.go.jp/collections/B00035
• 収集根拠: オンライン資料収集制度
• 受理日（W3CDTF）: 2018-04-12T16:47:48+09:00
• 保存日（W3CDTF）: 2018-04-12
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 掲載誌（URI）: https://earth-planets-space.springeropen.com/articles
• 掲載誌（国立国会図書館永続的識別子）: info:ndljp/pid/11067456; https://dl.ndl.go.jp/pid/11067456
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

• コレクション（個別）: 国立国会図書館デジタルコレクション > デジタル化資料 > 雑誌; https://dl.ndl.go.jp/collections/A00002
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象
• 遠隔複写可否（NDL）: 可
• 所蔵機関: 国立国会図書館
• 請求記号: Z16-695
• 掲載誌（国立国会図書館永続的識別子）: info:ndljp/pid/14528147; https://dl.ndl.go.jp/pid/14528147
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 11067505; http://id.ndl.go.jp/bib/11067505
• 整理区分コード: 632

• 要約等: The vertical downward component of the DC atmospheric electric field, or potential gradient (PG), at Kakioka 150 km southwest of the Fukushima Dai-ichi Nuclear Power Plant (FNPP1) was analyzed before and after the FNPP1 accident to examine possible influence of floating radioactive particles on the PG under the highly electrified clouds. Using 1-min PG data from March 13 to April 30 (late April 2011 corresponding to the time when floating radioactive materials decreased significantly) from 2006 to 2015, time profiles to/from the PG peaks (<-100 or >+100V/m) for 2011 are compared with other years. The PG developed toward and decays from its negative peaks faster in the first 50 days after the FNPP₁ accident than for the same period in other years, making the 10-min averaged PG values for the same negative PG peak higher (smaller in terms of absolute value) during the first 50 days after the FNPP₁ accident than those in other years in the study period, while the distribution of peak PG values is similar between 2011 and the other years. The observed shortening of the timescale is symmetric between the rise and decay and is the most clear when the negative PG peak is about −200 to −400V/m. For positive peaks, the change of the baseline resulting from the radioactive contamination on the ground in 2011 caused superficial difference on such time profiles. Otherwise, there are no significant difference between 2011 and the other years. Possible explanations based on increased ionizing radiation from floating radioactive particles, which are found to be concentrated at low altitudes (<500m according to radiosonde in-situ observations of gamma rays) where negative cloud charges normally exceed positive charges, are discussed. The scenarios discussed include enhanced electrostatic shielding and electric conductivity-led decay rate of cloud charges. The result opens up a new possibility of using PG as an independent monitor of radioactivity at some altitudes in case of nuclear accidents.
• DOI: 10.1186/s40623-018-0780-1; https://doi.org/10.1186/s40623-018-0780-1
• オンライン閲覧公開範囲: インターネット公開
• 著作権情報: © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• 関連情報（URI）: http://hdl.handle.net/2433/234282; http://id.ndl.go.jp/digimeta/11067505; https://dl.ndl.go.jp/pid/11067505; http://link.springer.com/content/pdf/10.1186/s40623-018-0780-1.pdf; http://link.springer.com/article/10.1186/s40623-018-0780-1/fulltext.html
• 参照: Synthesis of studies on significant atmospheric electrical effects of major nuclear accidents in Chernobyl and Fukushima; https://cir.nii.ac.jp/crid/1360290617558036480
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: 学術機関リポジトリデータベース; https://irdb.nii.ac.jp; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 11067505; http://id.ndl.go.jp/bib/11067505
• NII論文ID: 120006517801