干旱区生态环境知识资源中心(Arid): Following the curve? Reviewing the physical basis of the SCS curve number method for estimating storm runoff

Arid

DOI	10.1002/hyp.14404
	Following the curve? Reviewing the physical basis of the SCS curve number method for estimating storm runoff
	Kirkby, Mike; Cerda, Artemi
通讯作者	Kirkby, M (corresponding author), Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England.
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2021
卷号	35 期号:11
英文摘要	Less attention has been paid to runoff generation from semi-arid than from humid-temperate catchments. The SCS curve number approach is simple to apply and widely used, but lacks physical underpinning. Here output from a runoff generation models is compared with data from field measurements, making use of 11 years data from rainfall and runoff events at the Sierra de Enguera Soil Erosion Experimental Station in Eastern Spain. Runoff from natural rainfall events was monitored for 10 years on bare plots of 1-16 m length. The largest storm event was of 142 mm, generating runoff of up to 115 mm on the smallest plots. The model presented simulates overland storm flow on a sloping rough and unvegetated surface, representing an area of 320 x 320 m. Green-Ampt infiltration constants are randomly assigned to each cell in a 128 x 128 grid, and rectangular storms applied at a range of total amounts and intensities to simulate runoff at each transect across the area. A simple algebraic expression is developed to estimate total runoff and storage in terms of storm size and duration, and plot length, with parameters that reflect infiltration behaviour, and this expression is compared with the SCS curve number approach. For the very largest storms, both expressions converge asymptotically towards 100% runoff, but the revised expression greatly improves estimates of runoff from smaller events. Output of these simulations is compared with measured storm runoff data on bare runoff plots at the Sierra de Enguera experimental Station in SE Spain and gives further support to the proposed expression for storm runoff.
英文关键词	runoff plot SCS curve number simulation model storm runoff
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000723020900003
WOS关键词	OVERLAND-FLOW ; DEPRESSION-STORAGE ; WATER ; INFILTRATION ; EVOLUTION ; FRAMEWORK ; MODEL
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373788
作者单位	[Kirkby, Mike] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England; [Cerda, Artemi] Univ Valencia, Dept Geog, Soil Eros & Degradat Res Grp, Valencia, Spain
推荐引用方式 GB/T 7714	Kirkby, Mike,Cerda, Artemi. Following the curve? Reviewing the physical basis of the SCS curve number method for estimating storm runoff[J],2021,35(11).
APA	Kirkby, Mike,&Cerda, Artemi.(2021).Following the curve? Reviewing the physical basis of the SCS curve number method for estimating storm runoff.HYDROLOGICAL PROCESSES,35(11).
MLA	Kirkby, Mike,et al."Following the curve? Reviewing the physical basis of the SCS curve number method for estimating storm runoff".HYDROLOGICAL PROCESSES 35.11(2021).