Spatial and depth variability of streambed vertical hydraulic conductivity under the regional flow regimes

doi:10.1002/hyp.13241

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	Spatial and depth variability of streambed vertical hydraulic conductivity under the regional flow regimes
	Song, Jinxi 1,2,3; Wang, Liping 3,4; Dou, Xinyi 3; Wang, Fangjian 3; Guo, Hongtao 5; Zhang, Junlong 3,6; Zhang, Guotao 7; Liu, Qi 3; Zhang, Bo 3
刊名	HYDROLOGICAL PROCESSES
	2018-09-15
卷号	32 期号:19 页码:3006-3018
关键词	clogging level regional flow spatial and depth variability streambed grain size streambed vertical hydraulic conductivity (K-v)
ISSN号	0885-6087
DOI	10.1002/hyp.13241
通讯作者	Wang, Liping
产权排序	7
英文摘要	This study investigated the influence of the regional flow on the streambed vertical hydraulic conductivity (K-v) within the hyporheic zone in three stream reaches of the Weihe River in July 2016. The streambed K-v with two connected depths was investigated at each test reach. Based on the sediment characteristics, the three test reaches could be divided into three categories: a sandy streambed without continuous silt and clay layer, a sandy streambed with continuous silt and clay layer, and a silt-clay streambed. The results demonstrate that the streambed K-v mainly decreases with the depth at the sandy streambed (without continuous silt and clay layer) and increases with the depth at the other two test reaches. At the sandy streambed (with continuous silt and clay layer) where streambed K-v mainly decreases with the depth, the regional upward flux can suspend fine particles and enhance the pore spacing, resulting in the elevated K-v in the upper sediment layers. At another sandy streambed, the continuous silt and clay layer is the main factor that influences the vertical distribution of fine particles and streambed K-v. An increase in streambed K-v with the depth at the silt/clay streambed is attributed to the regional downward movement of water within the sediments that may lead to more fine particles deposited in the pores in the upper sediment layers. The streambed K-v is very close to the bank in the sandy streambed without continuous silt and clay layer and the channel centre in the other two test reaches. Differences in grain size distribution of the sediments at each test reach exercise a strong controlling influence on the streambed K-v. This study promotes the understanding of dynamics influencing the interactions between groundwater and surface water and provides guidelines to scientific water resources management for rivers.
电子版国际标准刊号	1099-1085
语种	英语
出版者	WILEY
WOS记录号	WOS:000442849100006
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/23739]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Wang, Liping
作者单位	1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 2.MWR, Yangling, Shaanxi, Peoples R China 3.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710119, Shaanxi, Peoples R China 4.Shaanxi Radio & Televis Univ, Shaanxi Business Coll, Xian, Shaanxi, Peoples R China 5.Chongqing Res Acad Environm Sci, Inst Ecol & Environm Sci, Chongqing, Peoples R China 6.Shandong Normal Univ, Coll Geog & Environm, Jinan, Shandong, Peoples R China 7.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Song, Jinxi,Wang, Liping,Dou, Xinyi,et al. Spatial and depth variability of streambed vertical hydraulic conductivity under the regional flow regimes[J]. HYDROLOGICAL PROCESSES,2018,32(19):3006-3018.
APA	Song, Jinxi.,Wang, Liping.,Dou, Xinyi.,Wang, Fangjian.,Guo, Hongtao.,...&Zhang, Bo.(2018).Spatial and depth variability of streambed vertical hydraulic conductivity under the regional flow regimes.HYDROLOGICAL PROCESSES,32(19),3006-3018.
MLA	Song, Jinxi,et al."Spatial and depth variability of streambed vertical hydraulic conductivity under the regional flow regimes".HYDROLOGICAL PROCESSES 32.19(2018):3006-3018.