干旱区生态环境知识资源中心(Arid): Flood frequency estimation and uncertainty in arid/semi-arid regions

Arid

DOI	10.1016/j.jhydrol.2020.125254
	Flood frequency estimation and uncertainty in arid/semi-arid regions
	Metzger, Asher; Marra, Francesco; Smith, James A.; Morin, Efrat
通讯作者	Morin, E (corresponding author), Hebrew Univ Jerusalem, Inst Earth Sci, EJ Safra Campus Givat Ram, Jerusalem, Israel.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	590
英文摘要	At site flood frequency analysis (FFA) in arid/semi-arid watersheds poses unique challenges to researchers and practitioners due to the generally limited data records. This study presents a comprehensive evaluation of FFA in arid/semi-arid watersheds in relation to the unique characteristics of these regions, such as the limited number of floods occurring each year and the large variability of the flood peak discharges. Study cases in Israel and the US are examined and compared with non-arid watersheds, characterized by Mediterranean climate, and with synthetic flood records. Results show that the tail of extreme value distributions describing arid/semi-arid watersheds is found to be heavier than the one describing Mediterranean watersheds. The number of yearly floods and the variability of flood peak discharge are shown to have a crucial impact on the accuracy of the quantile estimates with smaller number of events per year and larger coefficient of variation of flood peak discharge being related to larger errors in the estimated quantiles. Partial duration series approach provides a slightly reduced bias in the estimates, but should not be blindly preferred over annual maxima series as it presents comparable estimation uncertainty. In general, the generalized extreme value and the generalized Pareto distribution are found to be non-optimal choices for the examined arid/semi-arid watersheds.
英文关键词	Flood frequency analysis Arid/semi-arid regions Annual maxima series Partial duration series Extreme value theory Parameter estimation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599754500055
WOS关键词	PARTIAL DURATION SERIES ; GENERALIZED PARETO ; THRESHOLD ESTIMATION ; RAINFALL INTENSITY ; RUNOFF EVENTS ; DISTRIBUTIONS ; EXTREMES ; CURVES ; CLIMATE ; MAXIMUM
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349000
作者单位	[Metzger, Asher; Marra, Francesco; Morin, Efrat] Hebrew Univ Jerusalem, Inst Earth Sci, EJ Safra Campus Givat Ram, Jerusalem, Israel; [Marra, Francesco] CNR ISAC, Natl Res Council Italy, Inst Atmospher Sci & Climate, Bologna, Italy; [Smith, James A.] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Metzger, Asher,Marra, Francesco,Smith, James A.,et al. Flood frequency estimation and uncertainty in arid/semi-arid regions[J]. Hebrew University of Jerusalem,2020,590.
APA	Metzger, Asher,Marra, Francesco,Smith, James A.,&Morin, Efrat.(2020).Flood frequency estimation and uncertainty in arid/semi-arid regions.JOURNAL OF HYDROLOGY,590.
MLA	Metzger, Asher,et al."Flood frequency estimation and uncertainty in arid/semi-arid regions".JOURNAL OF HYDROLOGY 590(2020).