Ground deformation source model at Kuchinoerabu-jima volcano during 2006–2014 as revealed by campaign GPS observation

• 資料種別: 記事
• タイトル: Ground deformation source model at Kuchinoerabu-jima volcano during 2006–2014 as revealed by campaign GPS observation
• 著者・編者: Kohei Hotta; Masato Iguchi
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2017-12-22
• 出版年（W3CDTF）: 2017-12-22
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 69(173)
• 掲載巻: 69(173)
• 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/s40623-017-0763-7; https://doi.org/10.1186/s40623-017-0763-7
• 国立国会図書館永続的識別子: info:ndljp/pid/11067453; https://dl.ndl.go.jp/pid/11067453
• 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/10319651; https://dl.ndl.go.jp/pid/10319651
• 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: We analyzed campaign Global Positioning System observation data in Kuchinoerabu-jima during 2006–2014. Most benchmarks located around Shin-dake crater showed crater-centered radial horizontal displacements. Horizontal displacements at western rim of the Shin-dake crater were tended to be larger compared to those at eastern rim. In addition, benchmark KUC14 which locates near the cliff at Furu-dake showed westward horizontal displacement rather than crater-centered radial (southward) one. Meanwhile, small displacements were detected at the benchmarks located at the foot of Kuchinoerabu-jima. We modeled the observed displacements applying a finite element method. We set entire FE domain as 100 × 100 × 50 km3. We set top of the domain as a free surface, and sides and bottom to be fixed boundaries. Topography was introduced in the area within Kuchinoerabu-jima using digital elevation model data provided by Kagoshima prefecture and elevation information from Google earth, and elevation of the outside area was assumed to be sea level. We assumed a stratified structure based on a one-dimensional P-wave velocity structure. We applied a vertical spheroid source model and searched optimal values of horizontal location, depth, equatorial and polar radiuses, and internal pressure change of the source using the forward modeling method. A spherical source with a radius of 50 m was obtained beneath the Shin-dake crater at a depth of 400 m above sea level. The internal pressure increase of 361 MPa yields its volume increase of 31, 700 m3. Taking effects of topography and heterogeneity of ground into account allowed reproduction of overall deformation in Kuchinoerabu-jima. The location of deformation source coincides with hypocenters of shallow volcano-tectonic (VT) earthquakes and the aquifer estimated from a two-dimensional resistivity model by audio-frequency magnetotellurics method. The obtained deformation source may be corresponding to the pressurized aquifer, and shallow VT earthquakes and demagnetization may be caused by pressure and strain accumulation in the rocks around the aquifer. Applying the obtained spherical source to the tilt change before August 3, 2014 eruption, we found that 520 m3 of volcanic materials were supplied toward shallower in 1.5 h before the eruption. The depth and volume change of deformation source before May 2015 eruption detected by precise leveling surveys is deeper and two orders of magnitude greater compared to that before August 2014 eruption.
• DOI: 10.1186/s40623-017-0763-7; https://doi.org/10.1186/s40623-017-0763-7
• 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) 2017. 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/2433/229002; http://id.ndl.go.jp/digimeta/11067453; https://dl.ndl.go.jp/pid/11067453; http://link.springer.com/content/pdf/10.1186/s40623-017-0763-7.pdf; http://link.springer.com/article/10.1186/s40623-017-0763-7/fulltext.html
• 参照: 2015年口永良部島噴火の火山活動推移と避難の意思決定; https://cir.nii.ac.jp/crid/1390009404780947328; Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event : Ogasawara Island arc volcano, Nishinoshima; https://cir.nii.ac.jp/crid/2050307417121613056
• 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）: 11067453; http://id.ndl.go.jp/bib/11067453
• NII論文ID: 120006384159

• 要約等: type:text; source:Josai Junior College bulletin; identifier:JOS-18810624-26102
• DOI: 10.20566/18810624_26(1)_11; https://doi.org/10.20566/18810624_26(1)_11
• 関連情報（URI）: http://libir.josai.ac.jp/il/meta_pub/G0000284repository_JOS-18810624-26102; http://id.ndl.go.jp/bib/11067453; https://ndlsearch.ndl.go.jp/books/R000000004-I11067453
• 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: Japan Link Center; https://japanlinkcenter.org/top; 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; CiNii Articles
• 書誌ID（NDLBibID）: 11067453; http://id.ndl.go.jp/bib/11067453
• NII論文ID: 120005520360; 40018788996