Rapid dike intrusion into Sakurajima volcano on August 15, 2015, as detected by multi-parameter ground deformation observations

• 資料種別: 記事
• タイトル: Rapid dike intrusion into Sakurajima volcano on August 15, 2015, as detected by multi-parameter ground deformation observations
• 著者・編者: Kohei Hotta; Masato Iguchi; Takeshi Tameguri
• 出版事項: 日本 : Springer science+business media
• 出版年月日等: 2016-04-27
• 出版年（W3CDTF）: 2016-04-27
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 68(68)
• 掲載巻: 68(68)
• 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/s40623-016-0450-0; https://doi.org/10.1186/s40623-016-0450-0
• 国立国会図書館永続的識別子: info:ndljp/pid/9976811; https://dl.ndl.go.jp/pid/9976811
• 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）: 2016-05-17T18:44:59+09:00
• 保存日（W3CDTF）: 2016-05-17
• 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
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• 掲載誌（URI）: http://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/9963599; https://dl.ndl.go.jp/pid/9963599
• 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/3421917; https://dl.ndl.go.jp/pid/3421917
• 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）: 9976811; http://id.ndl.go.jp/bib/9976811
• 整理区分コード: 632

• 要約等: We present observations of ground deformation at Sakurajima in August 2015 and model the deformation using a combination of GNSS, tilt and strain data in order to interpret a rapid deformation event on August 15, 2015. The pattern of horizontal displacement during the period from August 14 to 16, 2015, shows a WNW-ESE extension, which suggests the opening of a dike. Using a genetic algorithm, we obtained the position, dip, strike length, width and opening of a dislocation source based on the combined data. A nearly vertical dike with a NNE-SSW strike was found at a depth of 1.0 km below sea level beneath the Showa crater. The length and width are 2.3 and 0.6 km, respectively, and a dike opening of 1.97 m yields a volume increase of 2.7 × 106 m3. 887 volcano-tectonic (VT) earthquakes beside the dike suggest that the rapid opening of the dike caused an accumulation of strain in the surrounding rocks, and the VT earthquakes were generated to release this strain. Half of the total amount of deformation was concentrated between 10:27 and 11:54 on August 15. It is estimated that the magma intrusion rate was 1 × 106 m3/h during this period. This is 200 times larger than the magma intrusion rate prior to one of the biggest eruptions at the summit crater of Minami-dake on July 24, 2012, and 2200 times larger than the average magma intrusion rate during the period from October 2011 to March 2012. The previous Mogi-type ground deformation is considered to be a process of magma accumulation in preexisting spherical reservoirs. Conversely, the August 2015 event was a dike intrusion and occurred in a different location to the preexisting reservoirs. The direction of the opening of the dike coincides with the T-axes and direction of faults creating a graben structure.
• DOI: 10.1186/s40623-016-0450-0; https://doi.org/10.1186/s40623-016-0450-0
• 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: © 2016 Hotta et al. 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/2433/218214; http://id.ndl.go.jp/digimeta/9976811; https://dl.ndl.go.jp/pid/9976811; http://link.springer.com/content/pdf/10.1186/s40623-016-0450-0.pdf; http://link.springer.com/article/10.1186/s40623-016-0450-0/fulltext.html; http://link.springer.com/content/pdf/10.1186/s40623-016-0450-0
• 参照: Development of a detection method for short-term slow slip events using GNSS data and its application to the Nankai subduction zone; https://cir.nii.ac.jp/crid/1050855656203614464; Monitoring the magmatic activity and volatile fluxes of an actively degassing submarine caldera in southern Japan; https://cir.nii.ac.jp/crid/1360294643743799808; Dike Inflation Process Beneath Sakurajima Volcano, Japan, During the Earthquake Swarm of August 15, 2015; https://cir.nii.ac.jp/crid/1360853567461682816; Free-fall experiments of volcanic ash particles using a 2-D video disdrometer; https://cir.nii.ac.jp/crid/1363664919709784704; An easier approach for helium isotope flux estimation in a submerged caldera; https://cir.nii.ac.jp/crid/1390018384729450752; Principal Component Analysis of the Color of Bulk Ash Samples at Sakurajima Volcano, Southwest Japan; https://cir.nii.ac.jp/crid/1390022919295516032; Volcanic Activity of Sakurajima Monitored Using Global Navigation Satellite System; https://cir.nii.ac.jp/crid/1390282763022700672; Integrated Study on Forecasting Volcanic Hazards of Sakurajima Volcano, Japan; https://cir.nii.ac.jp/crid/1390283659861159680; High Precision Lava Flow Simulation Using 8K Drone Digital Elevation Data; https://cir.nii.ac.jp/crid/1390292936929026048
• 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）: 9976811; http://id.ndl.go.jp/bib/9976811
• NII論文ID: 120005973249