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  1. 020 教育学部
  2. 20 紀要
  3. 11 新潟大学教育学部研究紀要 自然科学編
  4. 第1巻第2号
  1. 0 資料タイプ別
  2. 03 紀要論文

Subaqueous volcaniclastic gravity flow deposits possibly flowed down 450km from on-land volcanic source : examples of the Om-SK110 and SK100 Tephras in central to northeast Japan

http://hdl.handle.net/10191/7846
http://hdl.handle.net/10191/7846
26c66db5-84a6-4c3a-9864-4687d05a557c
名前 / ファイル ライセンス アクション
1(2)_137-155.pdf 1(2)_137-155.pdf (1.4 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2009-04-10
タイトル
タイトル Subaqueous volcaniclastic gravity flow deposits possibly flowed down 450km from on-land volcanic source : examples of the Om-SK110 and SK100 Tephras in central to northeast Japan
タイトル
言語 en
タイトル Subaqueous volcaniclastic gravity flow deposits possibly flowed down 450km from on-land volcanic source : examples of the Om-SK110 and SK100 Tephras in central to northeast Japan
言語
言語 eng
キーワード
主題Scheme Other
主題 Om-SK110 Tephra
キーワード
主題Scheme Other
主題 SK100 Tephra
キーワード
主題Scheme Other
主題 Joetsu Ash
キーワード
主題Scheme Other
主題 bipartite
キーワード
主題Scheme Other
主題 tephra sequence
キーワード
主題Scheme Other
主題 plug flow
キーワード
主題Scheme Other
主題 subaqueous gravity flow
キーワード
主題Scheme Other
主題 Niigata
キーワード
主題Scheme Other
主題 Akita
キーワード
主題Scheme Other
主題 Japan
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Kurokawa, Katsuki

× Kurokawa, Katsuki

WEKO 156423

Kurokawa, Katsuki

Search repository
Tan, Makiko

× Tan, Makiko

WEKO 156424

Tan, Makiko

Search repository
Yahagi, Haruna

× Yahagi, Haruna

WEKO 156425

Yahagi, Haruna

Search repository
Kamo, Mariko

× Kamo, Mariko

WEKO 156426

Kamo, Mariko

Search repository
著者別名
識別子 156427
識別子Scheme WEKO
姓名 黒川, 勝己
著者別名
識別子 156428
識別子Scheme WEKO
姓名 丹, 真紀子
著者別名
識別子 156429
識別子Scheme WEKO
姓名 矢萩, 春菜
著者別名
識別子 156430
識別子Scheme WEKO
姓名 加茂, 万里子
抄録
内容記述タイプ Abstract
内容記述 The Om-SK100 Tephras of early Pleistocene were possibly flowd down 450km from on-land volcanic sources in central Japan to submarine Oga region, northeast Japan. The on-land ash flows entered into water in the Niigata region, transformed into water-saturated gravity flows, namely the SK110 and SK100 Tephras in the southwestern Niigata region, 100-150km from the source. The SK110 and SK100 Tephras Beds show similar tephra sequence and consists of two divisions as the primary subflow sets. The basal division A is sand-sized and the upper division B is mostly silt-sized. The division A shows very slight decrease along down flow both in thickness and grain-size especially in the SK110 Tephra Bed throughout the Niigata region of 100-200km from the source. The gradding and lamination in the division A of the SK110 Tephra Bed are also very slight, impling the nearly plug flow condition along 0.3°-0.1° slope. In the division B of the SK110, water-escaped structures are occasionally found both in the Niigata and Akita regions of 450km from the source, impling the high-concentrated ash-cloud gravity flow origin. Thus, the division A and division B of the Om-SK110 Tephra comprise the bipartite flow deposit, and the SK100 Tephra is supposed to the similar mode of flowage. These bipartite flowage might be allowed to flow down so far as 450km from the source because of the least loss of the kinetic energy in the flow. Characterization of the parameters of these flows, comparing the case of the Joetsu Ash of typical turbulent flow deposit, was also performed.
書誌情報 新潟大学教育学部研究紀要 自然科学編
en : 新潟大学教育学部研究紀要 自然科学編

巻 1, 号 2, p. 137-155, 発行日 2009-02
出版者
出版者 新潟大学教育学部
ISSN
収録物識別子タイプ ISSN
収録物識別子 18833845
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA12358288
著者版フラグ
値 publisher
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