干旱区生态环境知识资源中心(Arid): Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions

Arid

DOI	10.1080/19475705.2020.1811404
	Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions
	Bamufleh, Sameer; Al-Wagdany, Abdullah; Elfeki, Amro; Chaabani, Anis
通讯作者	Bamufleh, S
来源期刊	GEOMATICS NATURAL HAZARDS & RISK
ISSN	1947-5705
EISSN	1947-5713
出版年	2020
卷号	11 期号:1 页码:1697-1723
英文摘要	The Horton-Strahler ratios are important to describe the stream network and to identify the hydrologic response of a basin using the GIUH concept. These ratios are often sensitive to the selected threshold area for the extraction of the stream network form digital elevation models (DEM). Researches are seeking to find out the appropriate threshold with no success. Self-similarity approach of the properties of the stream network can provide an estimation of equivalent Horton-Strahler ratios using parameters independent of the threshold area. This approach is applied on four arid basins in Saudi Arabia. The equivalent Horton-Strahler ratios are used to derive GIUH based on Nash and Frechet hydrograph models. The results indicate that the Horton-Strahler ratios and the length of the highest order stream depend strongly on the threshold and consequently, the GIUH characteristics show discrepancies due to the threshold. This study recommends to use threshold area that is equal to 0.02% of the basin area for basins less than 280 km(2)and 0.002% of the basin area for basins large than 2700 km(2).The comparison between the measured and the equivalent hydrographs of Nash and Frechet models for each event shows that there are obvious discrepancies in terms of peak discharge, Q(p), time to peak,T-p, time lag,T-lag,and the runoff volume. The results of Nash model are relatively better to represent the measured hydrographs. The minimum relative error (RE) of some events are: RE of Q(p) ranges between 12.5% for Nash to 61% for Frechet, RE of T-p is -53.8% for both Nash and Frechet, while RE ofTlagis 0.0% for both Nash and Frechet and RE of runoff volume ranges between -37.5% for Nash to -34.5% for Frechet. The study recommends investigating other GIUH models to improve the RE in arid regions.
英文关键词	Geomorphological instantaneous unit hydrograph Nash model Frechet model Horton-Strahler ratios Self-similarity approach equivalent Horton-Strahler ratios arid regions Saudi Arabia
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000567084300001
WOS关键词	FRACTAL ANALYSES ; CHANNEL ; CATCHMENT ; NETWORKS ; BASIN
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326119
作者单位	[Bamufleh, Sameer; Al-Wagdany, Abdullah; Elfeki, Amro; Chaabani, Anis] King Abdulaziz Univ, Fac Meteorol Environm & Arid Land Agr, Dept Hydrol & Water Resources Management, Jeddah, Saudi Arabia
推荐引用方式 GB/T 7714	Bamufleh, Sameer,Al-Wagdany, Abdullah,Elfeki, Amro,et al. Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions[J],2020,11(1):1697-1723.
APA	Bamufleh, Sameer,Al-Wagdany, Abdullah,Elfeki, Amro,&Chaabani, Anis.(2020).Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions.GEOMATICS NATURAL HAZARDS & RISK,11(1),1697-1723.
MLA	Bamufleh, Sameer,et al."Developing a geomorphological instantaneous unit hydrograph (GIUH) using equivalent Horton-Strahler ratios for flash flood predictions in arid regions".GEOMATICS NATURAL HAZARDS & RISK 11.1(2020):1697-1723.