Investigation on flood event variations at space and time scales in the Huaihe River Basin of China using flood behavior classification

	Investigation on flood event variations at space and time scales in the Huaihe River Basin of China using flood behavior classification
	Zhang Yongyong; Chen Qiutan; Xia Jun
刊名	Journal of Geographical Sciences
	2020
卷号	30 期号:12 页码:2053
关键词	flood events behavior metrics classification regional and interannual variations potential impacts
ISSN号	1009-637X
英文摘要	Flood is one of the severest natural disasters in the world and has caused enormous causalities and property losses.Previous studies usually focus on flood magnitude and occurrence time at event scale,which are insufficient to contain entire behavior characteristics of flood events.In our study,nine behavior metrics in five categories (e.g.,magnitude,duration,timing,rates of changes and variability) are adopted to fully describe a flood event.Regional and interannual variations of representative flood classes are investigated based on behavior similarity classification of numerous events.Contributions of geography,land use,hydrometeorology and human regulation on these variations are explored by rank analysis method.Results show that:five representative classes are identified,namely,conventional events (Class 1,61.7% of the total),low discharge events with multiple peaks (Class 2,5.3%),low discharge events with low rates of changes (Class 3,18.1%),low discharge events with high rates of changes (Class 4,10.8%) and high discharge events with long durations (Class 5,4.1%).Classes 1 and 3 are the major flood events and distributed across the whole region.Class 4 is mainly distributed in river sources,while Classes 2 and 5 are in the middle and down streams.Moreover,the flood class is most diverse in normal precipitation years (2006,2008–2010 and 2015),followed by wet years (2007,2013–2014),and dry years (2011 and 2012).All the impact factor categories explain 34.0%–84.1% of individual flood class variations.The hydrometeorological category (7.2%–56.9%) is the most important,followed by geographical (1.0%–6.3%),regulation (1.7%–5.1%) and land use (0.9%–2.2%) categories.This study could provide new insights into flood event variations in a comprehensive manner,and provide decision-making basis for flood control and resource utilization at basin scale.
语种	英语
WOS记录号	WOS:000602555200008
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136048]
专题	中国科学院地理科学与资源研究所
作者单位	中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Zhang Yongyong,Chen Qiutan,Xia Jun. Investigation on flood event variations at space and time scales in the Huaihe River Basin of China using flood behavior classification[J]. Journal of Geographical Sciences,2020,30(12):2053.
APA	Zhang Yongyong,Chen Qiutan,&Xia Jun.(2020).Investigation on flood event variations at space and time scales in the Huaihe River Basin of China using flood behavior classification.Journal of Geographical Sciences,30(12),2053.
MLA	Zhang Yongyong,et al."Investigation on flood event variations at space and time scales in the Huaihe River Basin of China using flood behavior classification".Journal of Geographical Sciences 30.12(2020):2053.