干旱区生态环境知识资源中心(Arid): Application of Different Separation Methods to Investigate the Baseflow Characteristics of a Semi-Arid Sandy Area, Northwestern China

Arid

DOI	10.3390/w12020434
	Application of Different Separation Methods to Investigate the Baseflow Characteristics of a Semi-Arid Sandy Area, Northwestern China
	Shao, Guangwen; Zhang, Danrong; Guan, Yiqing; Sadat, Mohammad Anwar; Huang, Feng
通讯作者	Zhang, Danrong
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:2
英文摘要	The Hailiutu River basin is a typical area of semi-arid sandy land with relatively flat topography, the surface of which is covered by undulating dunes and the development of the river system is not obvious. The dominant hydrological cycle is precipitation infiltration through dunes to aquifers followed by discharge to rivers. Therefore, the baseflow is an important component of the streamflow in this basin, but few studies for the baseflow characteristics have been conducted. The isotope tracer technique was applied to investigate the contributions of groundwater, soil water, and surface water to streamflow during the flood period. The results showed that the contributions of these components to streamflow were approximately 70%, 27%, and 3% respectively. Several automatic baseflow separation methods including filtering and recursive digital filtering (RDF) techniques were adopted to separate the baseflow from the streamflow and the adaptabilities of these methods were evaluated. All the filtering methods including Hydrograph Separation Program (HYSEP) and UK Institute of Hydrology's method (UKIH) clearly underestimated the baseflow when compared with the standard baseflow results which were provided by the previous study using the tracer-based method in this basin, while the recursive digital filtering with Eckhardt filter technique (RDF-E) produced better performance. In the nonprecipitation period, the RDF-E method misidentified quick flow values which caused deviations between the separated baseflow and the above standard value. Hence, we proposed a modified automatic baseflow separation method called RDF-M by introducing the precipitation information into RDF-E. In comparison with the above standard, the RDF-M method provided similar baseflow results which were consistent with the actual situation of the Hailiutu River basin.
英文关键词	baseflow separation method water components semi-arid sandy area
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000519846500125
WOS关键词	HAILIUTU RIVER CATCHMENT ; SURFACE WATER INTERACTIONS ; FLOW SEPARATION ; STREAMFLOW ; RECESSION ; MODEL ; HYDROGRAPH ; SIMULATION ; TRENDS ; PRECIPITATION
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315723
作者单位	Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Shao, Guangwen,Zhang, Danrong,Guan, Yiqing,et al. Application of Different Separation Methods to Investigate the Baseflow Characteristics of a Semi-Arid Sandy Area, Northwestern China[J]. 河海大学,2020,12(2).
APA	Shao, Guangwen,Zhang, Danrong,Guan, Yiqing,Sadat, Mohammad Anwar,&Huang, Feng.(2020).Application of Different Separation Methods to Investigate the Baseflow Characteristics of a Semi-Arid Sandy Area, Northwestern China.WATER,12(2).
MLA	Shao, Guangwen,et al."Application of Different Separation Methods to Investigate the Baseflow Characteristics of a Semi-Arid Sandy Area, Northwestern China".WATER 12.2(2020).