Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR029090 |
Spatial distributions of at-many-stations hydraulic geometry for mountain rivers originated from the Qinghai-Tibet Plateau | |
Chao Qin; Baosheng Wu; Guangqian Wang; Ge Wang | |
2021-05-17 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | At-many-stations hydraulic geometry (AMHG) has provided a novel way to understand river network development, simulate water flow and retrieve river discharge in data-scared regions. Based on in-situ measurements of six major rivers originating from the Qinghai-Tibet Plateau (QTP), this study verifies the existence of AMHG relations along the rivers and explores AMHG relations for cross sections that are not located in the same river reach. The mainstreams and tributaries of the studied rivers in the southern and the eastern portions of the QTP have satisfactory AMHG relation strengths with R2 > 0.9 for over 60% of the relations. For cross sections located in the same stream order or within a certain range of contributing area (CA), approximately 60% (9/15) and 53% (8/15) of the AMHG relations have an R2 > 0.6. AMHG strength increases with increasing stream order and CA; this finding reflects the increasing coherence and maturity of the river networks associated with the geomorphic shaping power of increased discharge. Width-AMHG intercepts are larger than those of depth- and velocity-AMHGs for all stream orders and CAs. Most of the congruent hydraulics generated from cross sections located in middle-scale rivers (orders 7-8) are within the observed range. Congruent hydraulics generally increase with an increase in in-situ measured hydraulics when the stream order or the CA increases. The AMHG relations existing among cross sections that are not located in the same reach, which is named as cross channel AMHG, indicate linear variability of cross-sectional geometric and hydraulic similarities in the same stream order or within a certain CA range. The results break the watershed divide boundary control on AMHG and have the potential to provide background knowledge for discharge estimation in mountain rivers located in the QTP. 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/328717 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Chao Qin,Baosheng Wu,Guangqian Wang,et al. Spatial distributions of at-many-stations hydraulic geometry for mountain rivers originated from the Qinghai-Tibet Plateau[J]. Water Resources Research,2021. |
APA | Chao Qin,Baosheng Wu,Guangqian Wang,&Ge Wang.(2021).Spatial distributions of at-many-stations hydraulic geometry for mountain rivers originated from the Qinghai-Tibet Plateau.Water Resources Research. |
MLA | Chao Qin,et al."Spatial distributions of at-many-stations hydraulic geometry for mountain rivers originated from the Qinghai-Tibet Plateau".Water Resources Research (2021). |
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