Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087055 |
Turbulence and Bed Load Transport in Channels With Randomly Distributed Emergent Patches of Model Vegetation | |
Shan, Yuqi1,2,3; Zhao, Tian2; Liu, Chao2,3; Nepf, Heidi2 | |
2020-04-09 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Laboratory experiments explored the impact of vegetation patchiness on channel-averaged turbulence and sediment transport. Stems were clustered into 16 randomly distributed circular patches of decreasing diameter. For the same channel velocity, the sediment transport increased with total stem number but decreased as stems were clustered into smaller patch diameters, occupying a smaller fraction of the bed area. The channel-averaged turbulence, which also declined with increased clustering, was shown to be a good predictor for sediment transport at the channel scale. Previous models for uniform vegetation were adapted to predict both the channel-averaged turbulence and sediment transport as a function of the total number of stems and degree of clustering, represented by the fraction of bed covered by patches. This provides a way for numerical modelers to represent the impact of subgrid-scale vegetation patchiness on sediment transport. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551464800013 |
WOS关键词 | FLOW-THROUGH ; DISPERSION ; FEEDBACKS ; VELOCITY ; SCALE ; ARRAY ; DRAG ; BAR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/249054 |
专题 | 气候变化 |
作者单位 | 1.Chengdu Univ Informat Technol, Coll Appl Math, Chengdu, Peoples R China; 2.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 3.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Peoples R China |
推荐引用方式 GB/T 7714 | Shan, Yuqi,Zhao, Tian,Liu, Chao,et al. Turbulence and Bed Load Transport in Channels With Randomly Distributed Emergent Patches of Model Vegetation[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(12). |
APA | Shan, Yuqi,Zhao, Tian,Liu, Chao,&Nepf, Heidi.(2020).Turbulence and Bed Load Transport in Channels With Randomly Distributed Emergent Patches of Model Vegetation.GEOPHYSICAL RESEARCH LETTERS,47(12). |
MLA | Shan, Yuqi,et al."Turbulence and Bed Load Transport in Channels With Randomly Distributed Emergent Patches of Model Vegetation".GEOPHYSICAL RESEARCH LETTERS 47.12(2020). |
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