WEKO3
アイテム
有珠火山1977年噴火におけるプリニアン噴出物
http://hdl.handle.net/10097/41092
http://hdl.handle.net/10097/41092a6cf04e8-be1e-45f3-a6ef-059e2b0c78d4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00004380625.pdf (1.0 MB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-02-05 | |||||
| タイトル | ||||||
| タイトル | 有珠火山1977年噴火におけるプリニアン噴出物 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 有珠火山1977年噴火 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | プリニアン噴出物 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 堆積物の岩相 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 構成粒子の特徴 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
中村, 一輝
× 中村, 一輝× 谷口, 宏充 |
|||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 330763 | |||||
| 姓名 | NAKAMURA, Kazuki | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 330764 | |||||
| 姓名 | TANIGUCHI, Hiromitsu | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In this paper we describe the Plinian products of the Usu 1977 eruption, and discuss the relation between the deposit and the eruption sequence. Special attention is focused on lithofacies, components of the deposit, and the characteristics of pumice in the Big I [Katsui et al. 1978: 385-408]. The deposits of the Big I consist of four fall units with sharp boundaries. According to an eyewitness account in [Niida et al. 1982: 97-118], the eruption column developed up step by step, and then rapidly decreased. The characters in the deposits are interpreted in connection the eyewitness account of the earlier gradual growth and the later rapid decrease. The Big I deposit has various types and colors of pumice in bubble-form. Some of the bubbles are in elongated-form with a fibrous texture, while others are spherical or ovoid-form. Colors of the pumice vary from white to gray. Although we can observe these different points, the bulk chemical compositions of all pumice are almost identical; meaning that the differences in the pumice were not caused by differences of bulk chemistry, and suggests that they were produced by the same magma. The porosity of the white pumice was found to be higher and the crystallinity in the groundmass is lower. This suggests that the white pumice was produced by magma that ascended more rapidly in the conduit. Based on the component analysis of the Big I deposit, it is found that the proportion of accessory rock, elongated pumice, and white pumice gradually increased toward the climax stage of the eruption. This may suggest that the increase of the eruption-rate induced increases of accessory rocks, and elongated and white pumices. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 論文 | |||||
| 書誌情報 |
東北アジア研究 en : Northeast Asian studies 号 8, p. 91-103, 発行日 2004-03-19 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1343-9332 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11158374 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| その他の言語のタイトル | ||||||
| その他のタイトル | Plinian products of the 1977 Usu Volcanic eruption | |||||
| 出版者 | ||||||
| 出版者 | 東北大学東北アジア研究センター | |||||
| 出版者 | ||||||
| 出版者 | publisher | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 紀要類 | |||||
| 登録日 | ||||||
| 日付 | 2010-02-05 | |||||
| 日付タイプ | Created | |||||
| 公開日（投稿完了日） | ||||||
| 日付 | 2010-02-05 | |||||
| 日付タイプ | Created | |||||
| 発行日 | ||||||
| 日付 | 2004-03 | |||||
| 日付タイプ | Created | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 1037043 bytes | |||||
| 著者所属 | ||||||
| 値 | 東北大学大学院理学研究科地学専攻 / 東北大学東北アジア研究センター | |||||
| 更新日 | ||||||
| 日付 | 2010-02-05 | |||||
| 日付タイプ | Created | |||||
