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Planform evolution of deltas with graded alluvial topsets: Insights from three-dimensional tank experiments, geometric considerations and field applications
http://hdl.handle.net/10069/37374
http://hdl.handle.net/10069/373745db64ff5-ae9f-44fe-a4ec-b38121b6e6ed
名前 / ファイル | ライセンス | アクション |
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Sed63_2158.pdf (3.8 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-12-02 | |||||
タイトル | ||||||
タイトル | Planform evolution of deltas with graded alluvial topsets: Insights from three-dimensional tank experiments, geometric considerations and field applications | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Alluvial river | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | autostratigraphy | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | base level | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | delta | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | experiment | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | grade | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sea-level | |||||
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 | journal article | |||||
著者 |
Muto, Tetsuji
× Muto, Tetsuji× Furubayashi, Ryuji× Tomer, Arti× Sato, Tomoyuki× Kim, Wonsuck× Naruse, Hajime× Parker, Gary |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The profile of a river that conveys sediment without net deposition and net erosion is referred to as ‘graded’ with respect to vertical aggradation of the river segment. Three experimental series, designed in terms of the autostratigraphic view of alluvial grade, were conducted to clarify the diagnostic spatial behaviour of graded alluvial?deltaic rivers: an ‘R series’, which utilized a moving boundary setting with a stationary base level; an ‘F series’ in a fixed boundary setting with a stationary base level to produce ‘forced grade’; and an ‘M series’ in a moving boundary setting with constant base-level fall to produce ‘autogenic grade.’ The results of the three experimental series, combined with geometrical modelling of the effects of basin water depth and other experimental data, suggest the following: (i) in a graded alluvial?deltaic system, lateral shifting and avulsing of active distributary channels are suppressed regardless of whether the downstream boundary of the deltaic system is fixed; (ii) in a delta with a downstream-fixed boundary, the graded streams are stabilized within a valley that is incised in the axial part of the delta plain, whereby the alluvial plain outside the valley is abandoned and terraced; (iii) in moving boundary settings, the graded river simply extends basinward as a linearly elongated channel and lobe system without cutting a valley; and (iv) a modern forced-graded alluvial river is most likely to be found in a valley incised into a fan delta in front of very deep water, and the stratigraphic signal of fossil autogenic-graded rivers will be found in deltaic successions that accumulated in the outer to marginal areas of deltaic continental shelves during sea-level falls. This renewed autostratigraphic view of alluvial grade suggests a thorough reconsideration of the conventional understanding that an alluvial river feeding a progradational delta is graded with a stationary base level. | |||||
書誌情報 |
Sedimentology 巻 63, 号 7, p. 2158-2189, 発行日 2016-12-01 |
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出版者 | ||||||
出版者 | International Association of Sedimentologists | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00370746 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1111/sed.12301 | |||||
権利 | ||||||
権利情報 | c 2016 The Authors. Sedimentology | |||||
権利 | ||||||
権利情報 | c 2016 International Association of Sedimentologists | |||||
権利 | ||||||
権利情報 | This is the peer reviewed version of the following article: Sedimentology, 63(7), pp.2158-2189; 2016, which has been published in final form at http://dx.doi.org/10.1111/sed.12301 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Sedimentology, 63(7), pp.2158-2189; 2016 |