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 |
DOI | 10.1002/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 |
推荐引用方式 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. |
入库方式: OAI收割
来源:水土保持研究所
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