Continuous monitoring of soil CO2 flux at Aso volcano, Japan : the influence of environmental parameters on diffuse degassing

• 資料種別: 記事
• タイトル: Continuous monitoring of soil CO2 flux at Aso volcano, Japan : the influence of environmental parameters on diffuse degassing
• 著者・編者: Masaaki Morita; Toshiya Mori; Akihiko Yokoo
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2019-01-07
• 出版年（W3CDTF）: 2019-01-07
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 71(1)
• 掲載巻: 71(1)
• 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/s40623-018-0980-8; https://doi.org/10.1186/s40623-018-0980-8
• 国立国会図書館永続的識別子: info:ndljp/pid/11245706; https://dl.ndl.go.jp/pid/11245706
• 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）: 2019-02-28T20:23:34+09:00
• 保存日（W3CDTF）: 2019-02-28
• 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/11245705; https://dl.ndl.go.jp/pid/11245705
• 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

• 要約等: Continuous measurements of soil CO2 flux are useful for understanding degassing processes and for monitoring volcanic activities. Recent studies at many volcanoes have revealed that soil CO2 flux variations are significantly influenced by environmental parameters as well as volcanic processes. In this study, we conducted continuous monitoring of soil CO2 flux in the flank of Nakadake cone, Aso volcano, Japan, from January 2016 to November 2017. The results of our observations during an active period before and after a large phreatomagmatic eruption on 8 October 2016 and during a calm period from 2017 showed variations in soil CO2 flux due to oscillations in environmental parameters. Excluding these variations from the raw time series by multivariate linear regression analysis, the time series of soil CO2 flux presented some anomalous peaks in both the active and calm periods. Careful comparison of the anomalous peaks with the environmental parameters revealed that most of the anomalous peaks were likely due to an increase in wind speed and/or a decrease in barometric pressure. However, the anomaly after the 8 October 2016 eruption was not completely explicable by the variations in the environmental parameters and coincided with increases in seismic amplitude and plume SO2 flux. This anomaly was possibly attributed to an increase in magmatic CO2 flux. These findings emphasized the importance of careful statistical treatment of the soil CO2 flux data after excluding the influences of the environmental parameters at each measurement site. These statistical treatments will contribute to a better understanding of the degassing processes and monitoring of volcanic activities, including phreatic or phreatomagmatic eruptions.
• DOI: 10.1186/s40623-018-0980-8; https://doi.org/10.1186/s40623-018-0980-8
• 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) 2019. 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/2433/242209; http://id.ndl.go.jp/digimeta/11245706; https://dl.ndl.go.jp/pid/11245706; http://link.springer.com/content/pdf/10.1186/s40623-018-0980-8.pdf; http://link.springer.com/article/10.1186/s40623-018-0980-8/fulltext.html
• 参照: Development of a drone-borne volcanic plume sampler; https://cir.nii.ac.jp/crid/1050853487366223872; Contribution of ground motions to landslide distribution during the 2018 Hokkaido Eastern Iburi earthquake; https://cir.nii.ac.jp/crid/1360025429435471232; Importance of Long-Term Shallow Degassing of Basaltic Magma on the Genesis of Massive Felsic Magma Reservoirs: a Case Study of Aso Caldera, Kyushu, Japan; https://cir.nii.ac.jp/crid/1360580229798527744
• 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）: 11245706; http://id.ndl.go.jp/bib/11245706
• NII論文ID: 120006645683