Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR028852 |
Sediment transport potential in a hydraulically connected river and floodplain‐channel system | |
Sumaiya Sumaiya; Jonathan A. Czuba; John T. Schubert; Scott R. David; Graham H. Johnston; Douglas A. Edmonds | |
2021-04-29 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Meandering river floodplains often contain intermittently flooded complex channel networks. Many questions remain as to the pervasiveness, function, and evolution of these floodplain channels. In the present work, we analyzed size‐specific sediment transport potential and assessed whether the channelized floodplain of the meandering East Fork White River near Seymour, Indiana is on a net erosional or depositional trajectory. We applied a two‐dimensional hydrodynamic model and used simulated model results to estimate the largest sediment size that can be moved in suspension and as bedload at various flows for grain size classes between 4 µm and 64 mm. We developed a probabilistic method that integrates the largest sediment size that can be moved at various flows to compute an effective grain size, which we compared to measured field data. Results show that the river is capable of supplying sand to the floodplain and these floodplain channels can transport sand in suspension and gravel as bedload. This suggests that sediment supplied from the river could be transported as bedload in floodplain channels. These floodplain channels are supply limited under the current hydrologic regime and the grain size distribution of the bed surface is set by the flow conditions; thus, these floodplain channels are net erosional. Finally, our proposed method of probabilistically integrating the largest sediment size that can be moved at various flows can be used to predict the upper end of the grain size distribution in suspension and in bed material, which is applicable to floodplains as well as coastal areas. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
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/324951 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Sumaiya Sumaiya,Jonathan A. Czuba,John T. Schubert,等. Sediment transport potential in a hydraulically connected river and floodplain‐channel system[J]. Water Resources Research,2021. |
APA | Sumaiya Sumaiya,Jonathan A. Czuba,John T. Schubert,Scott R. David,Graham H. Johnston,&Douglas A. Edmonds.(2021).Sediment transport potential in a hydraulically connected river and floodplain‐channel system.Water Resources Research. |
MLA | Sumaiya Sumaiya,et al."Sediment transport potential in a hydraulically connected river and floodplain‐channel system".Water Resources Research (2021). |
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