干旱区生态环境知识资源中心(Arid): Impact of urbanization on desert flash flood generation

Arid

DOI	10.1007/s12517-020-05446-z
	Impact of urbanization on desert flash flood generation
	Almousawi, Duaa; Almedeij, Jaber; Alsumaiei, Abdullah A.
通讯作者	Alsumaiei, Abdullah A.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:12
英文摘要	Desert precipitations are rare but torrential, and ephemeral streams are ungauged, by which synthetic hydrograph methods become essential for flood risk assessment. This study quantifies the impact of urbanization on generating flash floods in desert watersheds. A definition of flash flood was presented in terms of the relative strength of partial storm intensity to storm design frequency for existing stormwater drainage systems. A large desert catchment was chosen to generate synthetic surface runoff hydrograph records using HEC-HMS model. The catchment characteristics were extracted using GIS tools and digital elevation data. Intensity-duration-frequency curves were used for the catchment to simulate hypothetical storms of 24-h duration for different return periods. A sensitivity analysis was performed for curve number parameter to simulate urbanization level scenarios. The results show that it is possible to employ simple models to synthesize the impact of urbanization on desert flash floods with a drastic change in hydrograph peak discharge, time to peak, and runoff volume. The former hydrograph characteristic is found to be the most sensitive, with an increase by 316% in response to increase in curve number by 10%. This finding implies that a small variation in land cover due to urbanization may significantly increase the flash flood strength and potential damage to infrastructure and human life.
英文关键词	Arid zone Flash flood HEC-HMS SCS-CN method Synthetic hydrograph
类型	Article
语种	英语
国家	Kuwait
收录类别	SCI-E
WOS记录号	WOS:000540440200004
WOS关键词	CATCHMENT ; HYDROLOGY ; HAZARD ; COVER ; MODEL ; AREA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318780
作者单位	Kuwait Univ, Civil Engn Dept, POB 5969, Safat 13060, Kuwait
推荐引用方式 GB/T 7714	Almousawi, Duaa,Almedeij, Jaber,Alsumaiei, Abdullah A.. Impact of urbanization on desert flash flood generation[J],2020,13(12).
APA	Almousawi, Duaa,Almedeij, Jaber,&Alsumaiei, Abdullah A..(2020).Impact of urbanization on desert flash flood generation.ARABIAN JOURNAL OF GEOSCIENCES,13(12).
MLA	Almousawi, Duaa,et al."Impact of urbanization on desert flash flood generation".ARABIAN JOURNAL OF GEOSCIENCES 13.12(2020).