干旱区生态环境知识资源中心(Arid): Influences of riverbed morphology on patterns and magnitudes of hyporheic water exchange within a natural river confluence

Arid

DOI	10.1016/j.jhydrol.2019.04.025
	Influences of riverbed morphology on patterns and magnitudes of hyporheic water exchange within a natural river confluence
	Cheng, Dandong 1,2,3; Song, Jinxi 1,2,4; Wang, Weize 5,6; Zhang, Guotao 3,7
通讯作者	Song, Jinxi
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	574 页码:75-84
英文摘要	River confluences are pivotal junctions that have vital influences on hydraulic characteristics and sediment particle distributions as well as on hyporheic water exchange. However, hyporheic water exchange is poorly understood because of the complicated river morphology within a river confluence. Therefore, the river confluence between the Juehe River and Haohe River located in arid and semi-arid areas of northwestern China was selected to evaluate the hyporheic water exchange processes, and the temperatures of different depth sediment were measured on July 11th and 12th, 2016 by an instrument equipped with five temperature sensors. The patterns and magnitudes of hyporheic water exchange were estimated using a one-dimensional heat transport model coupled with temperature data. Meanwhile, terrain points elevations and sediment particle distributions in this river confluence were collected to determine the confluence riverbed morphology. Furthermore, the river confluence morphology effects on hyporheic water exchange were investigated in this study. The different riverbed morphology and hydrodynamic zone locations were observed, which were controlled by the planform geometry with low river confluence flux momentum during the test period. Meanwhile, the upwelling flow dominated in the test area, and the downwelling occurred at three of the 23 total test points, which was induced by the complicated riverbed morphology and hydraulic characteristics. Additionally, the magnitudes of the upwelling flow were significantly influenced by the sediment heterogeneity subjected to the erosional and depositional processes. Hyporheic water exchange is a vital hydrological process in arid and semi-arid areas, where it significantly impacts the ecological environment of rivers. This study provides a valuable guideline for water quality and quantity management in arid and semi-arid areas.
英文关键词	River confluence Morphology Hydraulic characteristics Sedimentary properties Hyporheic water exchange
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000476962800008
WOS关键词	SURFACE-WATER ; HYDRAULIC CONDUCTIVITY ; STREAMBED TOPOGRAPHY ; GROUNDWATER ; TEMPERATURE ; ZONE ; FLUXES ; FLOW ; HETEROGENEITY ; INTERFACE
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	西北农林科技大学 ; 清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217161
作者单位	1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 2.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China; 5.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; 6.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China; 7.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Dandong,Song, Jinxi,Wang, Weize,et al. Influences of riverbed morphology on patterns and magnitudes of hyporheic water exchange within a natural river confluence[J]. 西北农林科技大学, 清华大学,2019,574:75-84.
APA	Cheng, Dandong,Song, Jinxi,Wang, Weize,&Zhang, Guotao.(2019).Influences of riverbed morphology on patterns and magnitudes of hyporheic water exchange within a natural river confluence.JOURNAL OF HYDROLOGY,574,75-84.
MLA	Cheng, Dandong,et al."Influences of riverbed morphology on patterns and magnitudes of hyporheic water exchange within a natural river confluence".JOURNAL OF HYDROLOGY 574(2019):75-84.