Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093516 |
A numerical model of bank collapse and river meandering | |
Kun Zhao; Stefano Lanzoni; Zheng Gong; Giovanni Coco | |
2021-06-08 | |
发表期刊 | Geophysical Research Letters
![]() |
出版年 | 2021 |
英文摘要 | Meander migration results from the interaction between inner bank accretion and outer bank erosion/collapse. This interaction has been usually treated as a long-term average of a sequence of erosion events determined by flow hydrographs. Little attention has been paid to the role that individual bank collapse events play on meander evolution. To fill this gap, we developed a numerical model of river meandering that describes explicitly bank collapse. Results show that as bend curvature increases due to meander migration and elongation, the initially scattered locations of bank collapse events converge towards the channel section where bed shear stress attains a maximum. Simulations illustrate the observed catch-up behaviour between inner and outer banks, driven by intermittent bank collapse events. Moreover, bank collapse is found to speed up short-term meander migration and, consistent with field observations, meanders turn out to evolve towards a state characterized by constant channel width. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/329791 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Kun Zhao,Stefano Lanzoni,Zheng Gong,et al. A numerical model of bank collapse and river meandering[J]. Geophysical Research Letters,2021. |
APA | Kun Zhao,Stefano Lanzoni,Zheng Gong,&Giovanni Coco.(2021).A numerical model of bank collapse and river meandering.Geophysical Research Letters. |
MLA | Kun Zhao,et al."A numerical model of bank collapse and river meandering".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论