气候变化领域集成服务门户(CCPortal): Selection of a basin-scale model for flood frequency analysis in Mahanadi river basin, India

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DOI	10.1007/s11069-020-03936-7
	Selection of a basin-scale model for flood frequency analysis in Mahanadi river basin, India
	Swetapadma S.; Ojha C.S.P.
发表日期	2020
ISSN	0921030X
起始页码	519
结束页码	552
卷号	102 期号:1
英文摘要	The present study provides an insight into a systematic evaluation of probability distributions using some statistical measures along with a few relevant catchment and flow properties to select a basin-scale model for flood frequency analysis (FFA) of Mahanadi river basin, India. A comprehensive analysis identified generalized extreme value (GEV), Pearson type 3, generalized Pareto, and Gumbel as the best-fit candidates for FFA of the watershed. GEV was selected as the basin-scale model based on a descriptive statistical ranking method followed by its test for predictive ability through bootstrap sampling. The distribution parameters were correlated with a few hydrological and physiographic characteristics of the watershed through regression analysis. The predictive capability of the regressed equations was assessed by comparing the observed mean annual flood (MAF) with the anticipated MAF derived from the expected value of GEV density function. Various return period quantiles were estimated using the parameters obtained from these equations and compared with the observed values, which confirmed the robustness of the physically based GEV model over the entire watershed. Flood flow values estimated at the gauging sites considering the site-wise best distribution and the basin-scale standard model were compared. The marginal difference of error between them further supported the application of a standard model for the entire basin despite site-wise different models. © 2020, Springer Nature B.V.
关键词	Annual maximum series Bootstrap sampling Design flood estimation Generalized extreme value Regression analysis Statistical ranking method
英文关键词	basin analysis; bootstrapping; catchment; flood frequency; frequency analysis; probability; ranking; regression analysis; return period; river basin; sampling; watershed; Bay of Bengal; India; Mahanadi Basin
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205962
作者单位	Department of Civil Engineering, IIT Roorkee, Roorkee, Uttarakhand 247667, India
推荐引用方式 GB/T 7714	Swetapadma S.,Ojha C.S.P.. Selection of a basin-scale model for flood frequency analysis in Mahanadi river basin, India[J],2020,102(1).
APA	Swetapadma S.,&Ojha C.S.P..(2020).Selection of a basin-scale model for flood frequency analysis in Mahanadi river basin, India.Natural Hazards,102(1).
MLA	Swetapadma S.,et al."Selection of a basin-scale model for flood frequency analysis in Mahanadi river basin, India".Natural Hazards 102.1(2020).