Monochromatic infrasound waves observed during the 2014–2015 eruption of Aso volcano, Japan

• 資料種別: 記事
• タイトル: Monochromatic infrasound waves observed during the 2014–2015 eruption of Aso volcano, Japan
• 著者・編者: Akihiko Yokoo; Kyoka Ishii; Takahiro Ohkura
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2019-01-31
• 出版年（W3CDTF）: 2019-01-31
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 71(12)
• 掲載巻: 71(12)
• 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/s40623-019-0993-y; https://doi.org/10.1186/s40623-019-0993-y
• 国立国会図書館永続的識別子: info:ndljp/pid/11245717; https://dl.ndl.go.jp/pid/11245717
• 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: Monochromatic infrasound waves are scarcely reported volcanic infrasound signals. These waves have the potential to provide constraints on the conduit geometry of a volcano. However, to further investigate the waves scientifically, such as how the conduit shape modulates the waveforms, we still need to examine many more examples. In this paper, we provide the most detailed descriptions of these monochromatic infrasound waves observed at Aso volcano in Japan. At Aso volcano, a 160-day-long magmatic eruption occurred in 2014–2015 after a 20-year quiescent period. This eruption was the first event that we could monitor well using our infrasound network deployed around the crater. Throughout the entire eruption period, when both ash venting and Strombolian explosions occurred, monochromatic infrasound waves were observed nearly every day. Although the peak frequency of the signals (0.4-0.7 Hz) changed over time, the frequency exhibited no reasonable correlation with the eruption style. The source location of the signals estimated by considering topographic effects and atmospheric conditions was highly stable at the active vent. Based on the findings, we speculate that these signals were related to the resonant frequencies of an open space in the conduit: the uppermost part inside the vent. Based on finite-difference time-domain modeling using 3-D topographic data of the crater during the eruption (March 2015), we calculated the propagation of infrasound waves from the conduit. Assuming that the shape of the conduit was a simple pipe, the peak frequency of the observed waveforms was well reproduced by the calculation. The length of the pipe markedly defined the peak frequency. By replicating the observed waveform, we concluded that the gas exhalation with a gas velocity of 18 m/s occurred at 120 m depth in the conduit. However, further analysis from a different perspective, such as an analysis of the time difference between the arrivals of infrasound and seismic waves, is required to more accurately determine the conduit parameters based on observational data.
• DOI: 10.1186/s40623-019-0993-y; https://doi.org/10.1186/s40623-019-0993-y
• 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/2433/242210; http://id.ndl.go.jp/digimeta/11245717; https://dl.ndl.go.jp/pid/11245717; http://link.springer.com/content/pdf/10.1186/s40623-019-0993-y.pdf; http://link.springer.com/article/10.1186/s40623-019-0993-y/fulltext.html
• 参照: Transport of ballistic projectiles during the 2015 Aso Strombolian eruptions; https://cir.nii.ac.jp/crid/1050282677587826432; Sampling Volcanic Plume Using a Drone-Borne SelPS for Remotely Determined Stable Isotopic Compositions of Fumarolic Carbon Dioxide; https://cir.nii.ac.jp/crid/1050573243541063936; Development of a drone-borne volcanic plume sampler; https://cir.nii.ac.jp/crid/1050853487366223872; Combined approach to estimate the depth of the magma surface in a shallow conduit at Aso volcano, Japan; https://cir.nii.ac.jp/crid/1050857593494828416; 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; Temporal variation in the depth of the magma surface at Aso volcano in 2014–2015; https://cir.nii.ac.jp/crid/1360580229823040000; A novel high accuracy finite-difference time-domain method; https://cir.nii.ac.jp/crid/1360584339757761664; Excitation of airwaves by bubble bursting in suspensions : regime transitions and implications for basaltic volcanic eruptions; https://cir.nii.ac.jp/crid/2051151842057873024
• 参照: Forecasting the eruption of an open-vent volcano using resonant infrasound tones; https://cir.nii.ac.jp/crid/1880020693010648448
• 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）: 11245717; http://id.ndl.go.jp/bib/11245717
• NII論文ID: 120006645684

• 要約等: ウナギが日本種であることを DNA 鑑定により確実にかつ商品レベルで安価に証明するために，外国種ウナギ混入 DNA 鑑定法を開発した。ほとんどが日本種と想定される 100 匹の多数検体群中に外国種が混入しているか否かを，ミトコンドリア DNA・シトクロム <i>b</i> 遺伝子を用いて判定した。日本種以外の全外国種に共通する塩基配列をプライマーに用い，外国種・対立遺伝子特異的 PCR を実施した。PCR 産物が生成した場合は制限酵素 <i>Rsa</i> I, <i>Hinf</i>I を用い制限断片長多型（RFLP）法により種名を判定した。<br>
• DOI: 10.2331/suisan.77.896; https://doi.org/10.2331/suisan.77.896
• 関連情報（URI）: https://agriknowledge.affrc.go.jp/RN/2010814445; http://id.ndl.go.jp/bib/11245717; https://ndlsearch.ndl.go.jp/books/R000000004-I11245717
• 参照: Genetic identification method for two subspecies of the Indonesian short-finned eel, Anguilla bicolor, using an allelic discrimination technique; https://cir.nii.ac.jp/crid/1360285711828115968
• 参照: Rapid identification of eels Anguilla japonica and Anguilla anguilla by polymerase chain reaction with single nucleotide polymorphism-based specific probes; https://cir.nii.ac.jp/crid/1360292619800985600; A new species of freshwater eel Anguilla luzonensis (Teleostei: Anguillidae) from Luzon Island of the Philippines; https://cir.nii.ac.jp/crid/1360574092888625024; Analysis of the genetic structure of European eel ( Anguilla anguilla ) using microsatellite DNA and mtDNA markers; https://cir.nii.ac.jp/crid/1361699994257213184; Optimal Data Partitioning and a Test Case for Ray-Finned Fishes (Actinopterygii) Based on Ten Nuclear Loci; https://cir.nii.ac.jp/crid/1361981471396282624; A simple method to distinguish two commercially valuable eel species in Japan Anguilla japonica and A. anguilla using polymerase chain reaction strategy with a species-specific primer; https://cir.nii.ac.jp/crid/1363107368626555392; PCR-制限断片多型法を用いたウナギ種簡易DNA鑑定; https://cir.nii.ac.jp/crid/1390001206412441728
• 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; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 11245717; http://id.ndl.go.jp/bib/11245717
• NII論文ID: 10029457186