干旱区生态环境知识资源中心(Arid): Flood Seasonality Analysis in Iran: A Circular Statistics Approach

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DOI	10.1061/JHYEFF.HEENG-5786
	Flood Seasonality Analysis in Iran: A Circular Statistics Approach
	Bagheri-Gavkosh, Mehdi; Hosseini, Seiyed Mossa
通讯作者	Hosseini, SM
来源期刊	JOURNAL OF HYDROLOGIC ENGINEERING
ISSN	1084-0699
EISSN	1943-5584
出版年	2023
卷号	28 期号:2
英文摘要	Flood seasonality (FS) analysis is a key to delineating hydrologically homogenous regions and better understanding flood risk, especially for arid regions. Although Iran has undergone heavy floods in current decades, a quantitative spatially distributed overview of the flood seasonality and the its affected mechanisms is currently unavailable. This study aimed in seasonality analysis of annual maximum flood with average recurrence of 2 to 500 years in 291 continuous hydrometric stations across Iran having sufficient recorded flood data (>20 years, total of 9,565 events) using a circular statistics approach. Moreover, the relationships of recurrence season of floods with eight natural and human-induced factors including catchment area, catchment perimeter, mean catchment slope, normalized difference vegetation index (NDVI), elevation of station, mean slope of river, and latitude were examined. Findings showed that flooding in Iran presents strong seasonality, with 32% and 41% of the total events occurring during winter and spring, and mostly during April (24%). Although summer floods (similar to 11%) are more frequent in the northern parts, winter floods present higher percentages in the south. A significant difference in flood seasonality (2 to 500 years) was identified between the northern and southeastern regions. This study suggests that the geographical location (especially latitude) of the hydrometric station in Iran seems to be more significant than other considered factors in shaping flood seasonality. Results can serve as a foundation for enhancing the scientific understanding of the flood seasonality across Iran, which can provide useful insights for flood prevention planning and future changes projected by models. (C) 2022 American Society of Civil Engineers.
英文关键词	Flood seasonality (FS) analysis Circular statistics Annual maximum flood Iran's catchments Generating mechanism of flood
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000899333800004
WOS关键词	JOINT PROBABILITY ; TEMPORAL VARIABILITY ; FREQUENCY-ANALYSIS ; RIVER-BASIN ; PRECIPITATION ; SHIFTS
WOS类目	Engineering, Civil ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397370
推荐引用方式 GB/T 7714	Bagheri-Gavkosh, Mehdi,Hosseini, Seiyed Mossa. Flood Seasonality Analysis in Iran: A Circular Statistics Approach[J],2023,28(2).
APA	Bagheri-Gavkosh, Mehdi,&Hosseini, Seiyed Mossa.(2023).Flood Seasonality Analysis in Iran: A Circular Statistics Approach.JOURNAL OF HYDROLOGIC ENGINEERING,28(2).
MLA	Bagheri-Gavkosh, Mehdi,et al."Flood Seasonality Analysis in Iran: A Circular Statistics Approach".JOURNAL OF HYDROLOGIC ENGINEERING 28.2(2023).