Volcanic plume measurements using a UAV for the 2014 Mt. Ontake eruption

• 資料種別: 記事
• タイトル: Volcanic plume measurements using a UAV for the 2014 Mt. Ontake eruption
• 著者・編者: Toshiya Mori; Takeshi Hashimoto; Akihiko Terada
• 出版事項: 日本 : Springer science+business media
• 出版年月日等: 2016-03-22
• 出版年（W3CDTF）: 2016-03-22
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 68(49)
• 掲載巻: 68(49)
• 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/s40623-016-0418-0; https://doi.org/10.1186/s40623-016-0418-0
• 国立国会図書館永続的識別子: info:ndljp/pid/9976791; https://dl.ndl.go.jp/pid/9976791
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• 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）: 2016-05-17T18:44:59+09:00
• 保存日（W3CDTF）: 2016-05-17
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• オンライン閲覧公開範囲: 国立国会図書館内限定公開
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• 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・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 所蔵機関: 国立国会図書館
• 請求記号: Z19-383
• 掲載誌（国立国会図書館永続的識別子）: info:ndljp/pid/3421926; https://dl.ndl.go.jp/pid/3421926
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• 書誌ID（NDLBibID）: 9976791; http://id.ndl.go.jp/bib/9976791
• 整理区分コード: 632

• 要約等: A phreatic eruption of Mt. Ontake, Japan, started abruptly on September 27, 2014, and caused the worst volcanic calamity in recent 70 years in Japan. We conducted volcanic plume surveys using an electric multirotor unmanned aerial vehicle to elucidate the conditions of Mt. Ontake’s plume, which is flowing over 3000 m altitude. A plume gas composition, sulfur dioxide flux and thermal image measurements and a particle sampling were carried out using the unmanned aerial vehicle for three field campaigns on November 20 and 21, 2014, and June 2, 2015. Together with the results of manned helicopter and aircraft observations, we revealed that the plume of Mt. Ontake was not directly emitted from the magma but was influenced by hydrothermal system, and observed SO2/H2S molar ratios were decreasing after the eruption. High SO2 flux of >2000 t/d observed at least until 20 h after the onset of the eruption implies significant input of magmatic gas and the flux quickly decreased to about 130 t/d in 2 months. In contrast, H2S fluxes retrieved using SO2/H2S ratio and SO2 flux showed significantly high level of 700–800 t/d, which continued at least between 2 weeks and 2 months after the eruption. This is a peculiar feature of the 2014 Mt. Ontake eruption. Considering the trends of the flux changes of SO2 and H2S, we presume that majority of SO2 and H2S are supplied, respectively, from high-temperature magmatic fluid of a deep origin and from hydrothermal system. From the point of view of SO2/H2S ratios and fumarolic temperatures, the plume degassing trend after the 2014 eruption is following the similar course as that after the 1979 eruptions, and we speculate the 2014 eruptive activity will cease slowly similar to the 1979 eruption.
• DOI: 10.1186/s40623-016-0418-0; https://doi.org/10.1186/s40623-016-0418-0
• 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: Creative Commons Attribution 4.0 International
• 関連情報: Volcanic plume measurements using a UAV for the 2014 Mt. Ontake eruption; https://cir.nii.ac.jp/crid/2120026414526398336
• 関連情報（URI）: https://hdl.handle.net/2115/61987; http://id.ndl.go.jp/digimeta/9976791; https://dl.ndl.go.jp/pid/9976791; http://link.springer.com/content/pdf/10.1186/s40623-016-0418-0.pdf; http://link.springer.com/article/10.1186/s40623-016-0418-0/fulltext.html; http://link.springer.com/content/pdf/10.1186/s40623-016-0418-0; http://hdl.handle.net/2115/61987
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• 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; 科学研究費助成事業データベース; https://kaken.nii.ac.jp/ja
• 書誌ID（NDLBibID）: 9976791; http://id.ndl.go.jp/bib/9976791
• NII論文ID: 120005906797