WEKO3
アイテム
岩石学的にみた伊豆大島火山のマグマ供給系
https://doi.org/10.15083/0000032406
https://doi.org/10.15083/00000324064d302284-d666-40f4-8c9f-d7140e79d9cc
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
IHO91302.pdf (4.5MB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-04-26 | |||||
| タイトル | ||||||
| タイトル | 岩石学的にみた伊豆大島火山のマグマ供給系 | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Izu-Oshima volcano | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Magma plumbing system | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Island arc low-K tholeiite | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Ca-rich plagioclase | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Polybaric crystallization differentiation | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/0000032406 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | Petrological Constraints on the Magma Plumbing System of Izu-Oshima Volcano | |||||
| 著者 |
浜田, 盛久
× 浜田, 盛久 |
|||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 72459 | |||||
| 姓名 | Hamada, Morihisa | |||||
| 著者所属 | ||||||
| 著者所属 | 海洋研究開発機構 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Izu-Oshima is an active volcano located on the volcanic front of the Izu arc. It erupts island arc low-K tholeiite magma. During the past 150 years it has erupted repeatedly at intervals of 30-40 years. Thirty years have already passed since its last eruption (1986-1987) ; therefore, the next eruption is expected in the near future. The hypothesis that the next eruption of Izu-Oshima volcano is triggered by an aftereffect of the M9Tohoku-Oki earthquake, which took place on March 11th, 2011, is considered. In both the 9th century and the period between the 17th century and the 20th century, volcanism of Izu-Oshima volcano seems to have been activated in association with earthquakes occurring near the volcano. While some eruptions occurred after earthquakes, others occurred before earthquakes. It is possible that regional tectonic stress can trigger both major earthquakes and intense volcanic activity, although this hypothesis should be tested at Izu-Oshima volcano and/or elsewhere. Petrological studies of Izu-Oshima volcano are also reviewed to understand its magma plumbing system, providing useful information to prepare for its next eruption. It is proposed that polybaric crystallization differentiation of H2O-saturated magmas proceeds in both the magma chamber at 4 km depth (~3 wt.% H2O in melt) and the magma chamber at 9km depth (~5 wt.% H2O in melt). The H2O-rich nature of the basaltic magmas beneath the volcano suggests that a future eruption of Izu-Oshima volcano could be highly explosive if dissolved volatiles in melt are not sufficiently degassed from magma ascending through the conduit | |||||
| 書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 91, 号 3, p. 41-54, 発行日 2016 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00408972 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00162258 | |||||
| 出版者 | ||||||
| 出版者 | 東京大学地震研究所 | |||||
