中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Variability in the vertical hyporheic water exchange affected by hydraulic conductivity and river morphology at a natural confluent meander bend

文献类型:期刊论文

作者Zhang, Guotao1; Wang, Weize1; Liu, Qi1; Jiang, Weiwei2; Guo, Weiqiang1; Tang, Bin1; Bai, Haifeng1; Dou, Xinyi1; Song, JX (reprint author), Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China.; Song, Jinxi1,3
刊名HYDROLOGICAL PROCESSES
出版日期2017
卷号31期号:19页码:3407-3420
ISSN号0885-6087
关键词Confluent Meander Bend Erosion And Deposition Hydraulic Conductivity River Morphology Sedimentary Properties Vertical Hyporheic Water Exchange
DOI10.1002/hyp.11265
文献子类Article
英文摘要River confluences and their associated tributaries are key morphodynamic nodes that play important roles in controlling hydraulic geometry and hyporheic water exchange in fluvial networks. However, the existing knowledge regarding hyporheic water exchange associated with river confluence morphology is relatively scarce. On January 14 and 15, 2016, the general hydraulic and morphological characteristics of the confluent meander bend (CMB) between the Juehe River and the Haohe River in the southern region of Xi'an City, Shaanxi Province, China, were investigated. The patterns and magnitudes of vertical hyporheic water exchange (VHWE) were estimated based on a one-dimensional heat steady-state model, whereas the sediment vertical hydraulic conductivity (K-v) was calculated via in situ permeameter tests. The results demonstrated that 6 hydrodynamic zones and their extensions were observed at the CMB during the test period. These zones were likely controlled by the obtuse junction angle and low momentum flux ratio, influencing the sediment grain size distribution of the CMB. The VHWE patterns at the test site during the test period mostly showed upwelling flow dominated by regional groundwater discharging into the river. The occurrence of longitudinal downwelling and upwelling patterns along the meander bend at the CMB was likely subjected to the comprehensive influences of the local sinuosity of the meander bend and regional groundwater discharge and finally formed regional and local flow paths. Additionally, in dominated upwelling areas, the change in VHWE magnitudes was nearly consistent with that in K-v values, and higher values of both variables generally occurred in erosional zones near the thalweg paths of the CMB, which were mostly made up of sand and gravel. This was potentially caused by the erosional and depositional processes subjected to confluence morphology. Furthermore, lower K-v values observed in downwelling areas at the CMB were attributed to sediment clogging caused by local downwelling flow. The confluence morphology and sediment K-v are thus likely the driving factors that cause local variations in the VHWE of fluvial systems.
学科主题Water Resources
URL标识查看原文
出版地HOBOKEN
语种英语
出版者WILEY
WOS记录号WOS:000408341800008
资助机构National Natural Science Foundation of China [51379175, 51079123, 51679200]; Specialized Research Fund for the Doctoral Program of Higher Education [20136101110001]; Program for Key Science and Technology Innovation Team in Shaanxi Province [2014KCT-27]; Hundred Talents Project of the Chinese Academy of Sciences [A315021406] ; National Natural Science Foundation of China [51379175, 51079123, 51679200]; Specialized Research Fund for the Doctoral Program of Higher Education [20136101110001]; Program for Key Science and Technology Innovation Team in Shaanxi Province [2014KCT-27]; Hundred Talents Project of the Chinese Academy of Sciences [A315021406] ; National Natural Science Foundation of China [51379175, 51079123, 51679200]; Specialized Research Fund for the Doctoral Program of Higher Education [20136101110001]; Program for Key Science and Technology Innovation Team in Shaanxi Province [2014KCT-27]; Hundred Talents Project of the Chinese Academy of Sciences [A315021406] ; National Natural Science Foundation of China [51379175, 51079123, 51679200]; Specialized Research Fund for the Doctoral Program of Higher Education [20136101110001]; Program for Key Science and Technology Innovation Team in Shaanxi Province [2014KCT-27]; Hundred Talents Project of the Chinese Academy of Sciences [A315021406]
源URL[http://ir.iswc.ac.cn/handle/361005/7922]  
专题水保所科研产出--SCI_2017--SCI
通讯作者Song, JX (reprint author), Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China.
作者单位1.Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China
2.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China
3.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
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GB/T 7714
Zhang, Guotao,Wang, Weize,Liu, Qi,et al. Variability in the vertical hyporheic water exchange affected by hydraulic conductivity and river morphology at a natural confluent meander bend[J]. HYDROLOGICAL PROCESSES,2017,31(19):3407-3420.
APA Zhang, Guotao.,Wang, Weize.,Liu, Qi.,Jiang, Weiwei.,Guo, Weiqiang.,...&Song, Jinxi.(2017).Variability in the vertical hyporheic water exchange affected by hydraulic conductivity and river morphology at a natural confluent meander bend.HYDROLOGICAL PROCESSES,31(19),3407-3420.
MLA Zhang, Guotao,et al."Variability in the vertical hyporheic water exchange affected by hydraulic conductivity and river morphology at a natural confluent meander bend".HYDROLOGICAL PROCESSES 31.19(2017):3407-3420.

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来源:水土保持研究所

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