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A new geophone device for understanding environmental impacts caused by gravel bedload during artificial floods
http://hdl.handle.net/2237/26585
http://hdl.handle.net/2237/26585ffce761e-7dd9-4c3d-b7c4-d35035fdb9f6
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Tsubaki_et_al-2017-Water_Resources_Research.pdf ファイル公開：2017/08/01 (2.6 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-06-07 | |||||
| タイトル | ||||||
| タイトル | A new geophone device for understanding environmental impacts caused by gravel bedload during artificial floods | |||||
| 言語 | en | |||||
| 著者 |
Tsubaki, Ryota
× Tsubaki, Ryota× Kawahara, Yoshihisa× Zhang, Xin-Hua× Tsuboshita, Kentaro |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | © 2017 American Geophysical Union | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | To assess the contribution of gravel bedload on the removal of attached-algae and aquatic plants from a cobble-bed river during small floods, we propose a geophone type method for measuring the local bedload of non-uniform sized gravel. Due to limited peak discharge for focused events during our study, a large fraction of bed material (here cobbles) was immobile and only a small fraction of bed material (sand and gravel) was expected to be transported during the flushing flows we analyzed. The device we developed has a size equivalent to immobile bed material and a shape similar to bed material (rounded cobbles) at the site. The instrument's design allows avoidance of disturbances in river bed micro-topography during installation and local bedload transport during floods. A flume experiment was conducted in order to establish an empirical algorithm for estimating the diameter of impacted gravel, and uncertainty related to diameter estimation is discussed. The proposed method was utilized to quantify gravel bedload in a cobble-bed river during flushing flows. We also discuss the contribution of measured gravel bedload during flushing flows on the removal of attached-algae (up to a 37% reduction in chlorophyll-a density) and aquatic plants (a reduction of 38% in dry mass per area). Based on time variation for the measured gravel bedload, we also suggest the propagation of a bed-form composed of the fine sediment fraction migrating on immobile larger sediment and implications for the propagation of the fine sediment wave for attached-algae removal. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | Wiley | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1002/2016WR019726 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0043-1397 | |||||
| 書誌情報 |
en : Water Resources Research 巻 53, 号 2, p. 1491-1508, 発行日 2017-02 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://doi.org/10.1002/2016WR019726 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/26585 | |||||
| 識別子タイプ | HDL | |||||
