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Vulcanian eruptions at Sakurajima Volcano: geophysical data, numerical modelling, and petrological evidence
https://nied-repo.bosai.go.jp/records/6556
https://nied-repo.bosai.go.jp/records/65567ddc9fd9-71ef-474a-9287-71ccf0e257a6
Item type | researchmap(1) | |||||||||||||||||||||||||
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公開日 | 2024-03-18 | |||||||||||||||||||||||||
タイトル | ||||||||||||||||||||||||||
言語 | ja | |||||||||||||||||||||||||
タイトル | Vulcanian eruptions at Sakurajima Volcano: geophysical data, numerical modelling, and petrological evidence | |||||||||||||||||||||||||
タイトル | ||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||
タイトル | Vulcanian eruptions at Sakurajima Volcano: geophysical data, numerical modelling, and petrological evidence | |||||||||||||||||||||||||
著者 |
Takeshi Nishimura
× Takeshi Nishimura
× Tomofumi Kozono
× Akiko Matsumoto
× Mitsuhiro Nakagawa
× Masato Iguchi
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抄録 | ||||||||||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||||||||||
内容記述 | Abstract We investigated the magma conduit system beneath three active craters that have repeatedly generated Vulcanian eruptions at Sakurajima Volcano, Japan, by analysing seismic, infrasound, and tilt data. The hypocentres of the earthquakes associated with the Vulcanian eruptions are distributed separately at shallow depths of approximately 0.5 km beneath the craters. Infrasound indicated that the swelling of the crater floor starts approximately 0.2 s after the occurrence of earthquakes and that the eruption starts about 0.3 to 0.5 s later. During an eruption, tilt vectors at a station approximately 2.7 km far from the active craters indicated a deflationary trend directed toward one of the three active craters. A 1-D conduit flow simulation indicated pressure build-up at a depth of 0.4–1.0 km beneath the crater, consistent with previously reported pressure sources during eruptions detected by geodesy. Volcanic lapilli emitted from the three craters have the same chemical composition; hence, Vulcanian eruptions of all three studied craters originate from a common magma source. |
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言語 | en | |||||||||||||||||||||||||
書誌情報 |
ja : Bulletin of Volcanology en : Bulletin of Volcanology 巻 86, 号 4, p. 27, 発行日 2024-03-04 |
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出版者 | ||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||
出版者 | Springer Science and Business Media LLC | |||||||||||||||||||||||||
ISSN | ||||||||||||||||||||||||||
収録物識別子タイプ | EISSN | |||||||||||||||||||||||||
収録物識別子 | 1432-0819 | |||||||||||||||||||||||||
DOI | ||||||||||||||||||||||||||
関連識別子 | 10.1007/s00445-024-01722-y |