Reconstruction of a phreatic eruption on 27 September 2014 at Ontake volcano, central Japan, based on proximal pyroclastic density current and fallout deposits
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DOI[10.1186/s40623-016-0449-6]のデータに遷移します
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- 資料種別
- 記事
- 著者・編者
- Fukashi MaenoSetsuya NakadaTeruki Oikawa
- 出版年月日等
- 2016-05-17
- 出版年（W3CDTF）
- 2016-05-17
- タイトル（掲載誌）
- EPS : Earth, Planets and Space
- 巻号年月日等（掲載誌）
- 68(82)
- 掲載巻
- 68(82)
- 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/s40623-016-0449-6
- 国立国会図書館永続的識別子
- info:ndljp/pid/10193157
- コレクション（共通）
- コレクション（障害者向け資料：レベル1）
- 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
- 収集根拠
- オンライン資料収集制度
- 受理日（W3CDTF）
- 2016-09-08T09:53:02+09:00
- 保存日（W3CDTF）
- 2016-08-26
- 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
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- 掲載誌（URI）
- 掲載誌（国立国会図書館永続的識別子）
- info:ndljp/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
- 要約等
- The phreatic eruption at Ontake volcano on 27 September 2014, which caused the worst volcanic disaster in the past half-century in Japan, was reconstructed based on observations of the proximal pyroclastic density current (PDC) and fallout deposits. Witness observations were also used to clarify the eruption process. The deposits are divided into three major depositional units (Units A, B, and C) which are characterized by massive, extremely poorly sorted, and multimodal grain-size distribution with 30–50wt% of fine ash (silt–clay component). The depositional condition was initially dry but eventually changed to wet. Unit A originated from gravity-driven turbulent PDCs in the relatively dry, vent-opening phase. Unit B was then produced mainly by fallout from a vigorous moist plume during vent development. Unit C was derived from wet ash fall in the declining stage. Ballistic ejecta continuously occurred during vent opening and development. As observed in the finest population of the grain-size distribution, aggregate particles were formed throughout the eruption, and the effect of water in the plume on the aggregation increased with time and distance. Based on the deposit thickness, duration, and grain-size data, and by applying a scaling analysis using a depth-averaged model of turbulent gravity currents, the particle concentration and initial flow speed of the PDC at the summit area were estimated as 2×10−4–2×10−3 and 24–28m/s, respectively. The tephra thinning trend in the proximal area shows a steeper slope than in similar-sized magmatic eruptions, indicating a large tephra volume deposited over a short distance owing to the wet dispersal conditions. The Ontake eruption provided an opportunity to examine the deposits from a phreatic eruption with a complex eruption sequence that reflects the effect of external water on the eruption dynamics.ArticleEarth, Planets and Space. 68: 82(2016)
- DOI
- 10.1186/s40623-016-0449-6
- 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 Maeno 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）
- 参照
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- 参照
- Reconstruction of the 2014 eruption sequence of Ontake Volcano from recorded images and interviewsThermodynamics of gas and steam-blast eruptionsChronology and products of the 2000 eruption of Miyakejima Volcano, JapanTotal grain-size distribution and volume of tephra-fall depositsOverview of the eruption of Soufriere Hills Volcano, Montserrat, 18 July 1995 to December 1997Constraining tephra dispersion and deposition from three subplinian explosions in 2011 at Shinmoedake volcano, Kyushu, JapanPhreatic eruption clouds: the activity of la Soufrière de Guadeloupe, F.W.I., August — October, 1976The fluid dynamics and thermodynamics of eruption columnsParticle size distributions and the sequential fragmentation/transport theory applied to volcanic ashEstimating the volume of tephra deposits: A new simple strategyTransport and deposition of a pyroclastic surge across an area of high relief: The 18 May 1980 eruption of Mount St. Helens, WashingtonGrowth of volcanic ash aggregates in the presence of liquid water and ice: an experimental approachPyroclastic density current from the 1888 phreatic eruption of Bandai volcano, NE JapanHydrothermal eruptions in the Waiotapu geothermal system, New Zealand; their origin, associated breccias, and relation to precious metal mineralizationA review on phreatic eruptions and their precursorsStratified flow in pyroclastic surgesChapter 1 Introduction and key conceptsThe aerodynamic behaviour of volcanic aggregatesGrowth regime map for liquid‐bound granulesCharacterization of low-temperature pyroclastic surges that occurred in the northeastern Japan arc during the late 19th centuryMud plumbing system of an isolated phreatic eruption at Akita Yakeyama volcano, northern Honshu, JapanParoxysmal dome explosion during the Merapi 2010 eruption: Processes and facies relationships of associated high-energy pyroclastic density currentsSource mechanism of a very-long-period event at Mt Ontake, central Japan: Response of a hydrothermal system to magma intrusion beneath the summitInfluence of particle aggregation on deposition of distal tephra from the MAy 18, 1980, eruption of Mount St. Helens volcanoCharacteristics of hydrothermal eruptions, with examples from New Zealand and elsewhereReview of methods of estimating rhyolitic tephra volumes; applications to the Taupo volcanic zone, New ZealandHydrovolcanism: Basic considerations and reviewThe hydrothermal system at Soufriere Hills Volcano, Montserrat (West Indies): Characterization and role in the on‐going eruptionGrain-Size Characteristics of Pyroclastic DepositsThe 1975–1977 crisis of la Soufriere de Guadeloupe (F.W.I): A still-born magmatic eruptionRetrospective analysis of uncertain eruption precursors at La Soufrière volcano, Guadeloupe, 1975–77: volcanic hazard assessment using a Bayesian Belief Network approachDynamics of surges generated by hydrothermal blasts during the 6 August 2012 Te Maari eruption, Mt. Tongariro, New ZealandVolcanic ash clusters: Tephra rafts and scavengersA method for the calculation of the impact parameters of dilute pyroclastic density currents based on deposit particle characteristicsPyroclastic density currents: state of the art and perspectivesParticle-driven gravity currents down planar slopesOn the formation of eruption columns following explosive mixing of magma and surface‐water御岳火山の歴史噴火記録の再検討と噴気活動の歴史記録御嶽火山2014 年9 月27 日噴火で発生した火砕流Precursory activity and evolution of the 2011 eruption of Shinmoe-dake in Kirishima volcano : insights from ash samples2014 Mount Ontake eruption : characteristics of the phreatic eruption as inferred from aerial observationsPreparatory and precursory processes leading up to the 2014 phreatic eruption of Mount Ontake, JapanSource mechanism of a VLP event immediately before the 2014 eruption of Mt. Ontake, JapanEstimation of ballistic block landing energy during 2014 Mount Ontake eruption
- 連携機関・データベース
- 国立情報学研究所 : CiNii Research
- 提供元機関・データベース
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- 書誌ID（NDLBibID）
- 10193157
- NII論文ID
- 120007100313