Spatial analysis of meteorological drought return periods in China using Copulas

	Spatial analysis of meteorological drought return periods in China using Copulas
	Liu, Xiong-Fei 1; Wang, Shi-Xin 1; Zhou, Yi 1; Wang, Fu-Tao 1; Yang, Guang 1; Liu, Wen-Liang 1
刊名	NATURAL HAZARDS
	2016
卷号	80 期号:1 页码:367-388
关键词	NEURAL-NETWORK DROUGHT FLOOD VULNERABILITY HAZARDS
通讯作者	Zhou, Y (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.
英文摘要	China is considered to be one of the most vulnerable drought-prone countries in the world, and it has recently suffered many severe droughts with large economic and societal losses. Drought events in China have been extracted using run theory based on the Standardized Precipitation Evapotranspiration Index, which covers the period 1961-2013 across 810 stations. The drought events are characterized by three variables: duration, severity and peak. Exponential, Weibull and Pareto functions are then selected to describe the marginal distribution of duration, severity and peak, respectively. The Gumbel-Hougaard Copula was used to construct the joint distribution of Duration-Severity and Duration-Peak, while the Clayton Copula and the Gaussian Copula are used to construct the joint distribution of Severity-Peak and Duration-Severity-Peak, respectively. The results indicate that the return period is dependent on spatial location, variable type and the combination of variables. For extreme droughts, trivariate 'and' return periods are longer, with an average of 42.1 years. The short return period is mainly distributed in southern China, especially on the border between Sichuan and Yunnan, the coastal regions of Guangdong, western Hunan and northern Jiangxi. Studies on the identification of spatial distributions of drought return periods across China have therefore been undertaken for drought mitigation and strategy planning.
学科主题	Geology; Meteorology & Atmospheric Sciences; Water Resources
类目[WOS]	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
收录类别	SCI
语种	英语
WOS记录号	WOS:000367262900019
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39315]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiong-Fei,Wang, Shi-Xin,Zhou, Yi,et al. Spatial analysis of meteorological drought return periods in China using Copulas[J]. NATURAL HAZARDS,2016,80(1):367-388.
APA	Liu, Xiong-Fei,Wang, Shi-Xin,Zhou, Yi,Wang, Fu-Tao,Yang, Guang,&Liu, Wen-Liang.(2016).Spatial analysis of meteorological drought return periods in China using Copulas.NATURAL HAZARDS,80(1),367-388.
MLA	Liu, Xiong-Fei,et al."Spatial analysis of meteorological drought return periods in China using Copulas".NATURAL HAZARDS 80.1(2016):367-388.