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Constraining tephra dispersion and deposition from three subplinian explosions in 2011 at Shinmoedake volcano, Kyushu, Japan
https://nied-repo.bosai.go.jp/records/4165
https://nied-repo.bosai.go.jp/records/4165820826cd-9acc-4c39-99b4-cf722185128d
| Item type | researchmap(1) | |||||||||||||||||||
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| 公開日 | 2023-05-24 | |||||||||||||||||||
| タイトル | ||||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| タイトル | Constraining tephra dispersion and deposition from three subplinian explosions in 2011 at Shinmoedake volcano, Kyushu, Japan | |||||||||||||||||||
| 言語 | ||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||
| 著者 |
Fukashi Maeno
× Fukashi Maeno
× Masashi Nagai
× Setsuya Nakada
× Rose E. Burden
× Samantha Engwell
× Yuki Suzuki
× Takayuki Kaneko
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| 抄録 | ||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||
| 内容記述 | Constraining physical parameters of tephra dispersion and deposition from explosive volcanic eruptions is a significant challenge, because of both the complexity of the relationship between tephra distribution and distance from the vent and the difficulties associated with direct and comprehensive real-time observations. Three andesitic subplinian explosions in January 2011 at Shinmoedake volcano, Japan, are used as a case study to validate selected empirical and theoretical models using observations and field data. Tephra volumes are estimated using relationships between dispersal area and tephra thickness or mass/area. A new cubic B-spline interpolation method is also examined. Magma discharge rate is estimated using theoretical plume models incorporating the effect of wind. Results are consistent with observed plume heights (6.4-7.3 km above the vent) and eruption durations. Estimated tephra volumes were 15-34x10(6) m(3) for explosions on the afternoon of 26 January and morning of 27 January, and 5.0-7.6x10(6) m(3) for the afternoon of 27 January; magma discharge rates were in the range 1-2x10(6) kg/s for all three explosions. Clast dispersal models estimated plume height at 7.1 +/- 1 km above the vent for each explosion. The three subplinian explosions occurred with approximately 12-h reposes and had similar mass discharge rates and plume heights but decreasing erupted magma volumes and durations. | |||||||||||||||||||
| 言語 | en | |||||||||||||||||||
| 書誌情報 |
en : BULLETIN OF VOLCANOLOGY 巻 76, 号 6, 発行日 2014-06 |
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| 言語 | en | |||||||||||||||||||
| 出版者 | SPRINGER | |||||||||||||||||||
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| 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/s00445-014-0823-9 | |||||||||||||||||||
