analysisofcontrolsuponchannelplanformatthefirstgreatbendoftheupperyellowriverqinghaitibetplateau
文献类型：期刊论文
| 作者 | Li Zhiwei2; Wang Zhaoyin2; Pan Baozhu3; Du Jun1; Brierley Gary1; Yu Guoan4 ; Blue Brendon1
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| 刊名 | journalofgeographicalsciences
 |
| 出版日期 | 2013 |
| 卷号 | 23期号:5页码:833 |
| ISSN号 | 1009-637X |
| 英文摘要 | The 270 km long section of the Upper Yellow River at the First Great Bend is comprised of single channel and multiple channel systems that alternate among anastomosing, anabranching, meandering and braided reaches. The sequence of downstream pattern changes is characterized as: anastomosing-anabranching, anabranching-meandering, meandering-braided and braided-meandering. Remote sensing images, DEM data and field investigations are used to assess and interpret controls on these reach transitions. Channel slope and bed sediment size are key determinants of transitions in channel planform. Anastomosing reaches have a relatively high bed slope (0.86‰) and coarser sediment bed material (d_(50)=3.5 mm). In contrast, meandering reaches have a low slope (0.30‰) and fine sediment bed material (d_(50)=0.036 mm). The transition from a meandering to braided pattern is characterized by an increase in channel width-depth ratio, indicating the important role of bank strength (i.e. cohesive versus non-cohesive versus channel boundaries). Interestingly, the braided-meandering and meandering-braided transitions are coincident with variable flow inputs from tributary rivers (Baihe and Heihe rivers respectively). Theoretical analysis of the meandering-braided transition highlights the key control of channel width-depth ratio as a determinant of channel planform. |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/122465]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.奥克兰大学 2.清华大学 3.Changjiang River Scientific Research Institute 4.中国科学院地理科学与资源研究所 |
| 推荐引用方式 GB/T 7714 | Li Zhiwei,Wang Zhaoyin,Pan Baozhu,et al. analysisofcontrolsuponchannelplanformatthefirstgreatbendoftheupperyellowriverqinghaitibetplateau[J]. journalofgeographicalsciences,2013,23(5):833. |
| APA | Li Zhiwei.,Wang Zhaoyin.,Pan Baozhu.,Du Jun.,Brierley Gary.,...&Blue Brendon.(2013).analysisofcontrolsuponchannelplanformatthefirstgreatbendoftheupperyellowriverqinghaitibetplateau.journalofgeographicalsciences,23(5),833. |
| MLA | Li Zhiwei,et al."analysisofcontrolsuponchannelplanformatthefirstgreatbendoftheupperyellowriverqinghaitibetplateau".journalofgeographicalsciences 23.5(2013):833. |
入库方式： OAI收割
来源：地理科学与资源研究所
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