Response of flood events to extreme precipitation: two case studies in Taihu Basin, China

Flood events are typically triggered by extreme precipitation in rain-dominant basins. In this study, to better understand the genetic mechanisms and characteristics of floods, copula functions are used to analyze the response of flood events to extreme precipitation. The coincidence probabilities o...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Feiqing Jiang, Zengchuan Dong, Yun Luo, Moyang Liu, Tao Zhou, Xinkui Wang, Zhenye Zhu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bivariate frequency copula extreme precipitation flood risk analysis return periods taihu basin Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/c18c5d6f62694382b644960334de176c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c18c5d6f62694382b644960334de176c
record_format	dspace
spelling	oai:doaj.org-article:c18c5d6f62694382b644960334de176c2021-11-06T07:15:21ZResponse of flood events to extreme precipitation: two case studies in Taihu Basin, China1606-97491607-079810.2166/ws.2021.001https://doaj.org/article/c18c5d6f62694382b644960334de176c2021-06-01T00:00:00Zhttp://ws.iwaponline.com/content/21/4/1629https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Flood events are typically triggered by extreme precipitation in rain-dominant basins. In this study, to better understand the genetic mechanisms and characteristics of floods, copula functions are used to analyze the response of flood events to extreme precipitation. The coincidence probabilities of the typical extreme flood and precipitation events are calculated; different return periods of their arbitrary combinations are calculated, whereas the dangerous domains for flood control under different return periods are identified; furthermore, flood risk analysis under different extreme precipitation scenarios is performed via their conditional exceedance probabilities. The Xitiaoxi catchment (XC) and Dongtiaoxi catchment (DC) in the Zhexi Region of the Taihu Basin are selected as the study area. The results show that in four scenarios with precipitation frequencies of 80%, 90%, 93.33%, and 95%, the probabilities of the dangerous flood are 9.72%, 10.57%, 10.86%, and 11.01% in the XC, respectively, and 5.91%, 6.31%, 6.44%, and 6.51% in the DC, respectively. This study provides a practical basis and guidance for the computation of rainstorm designs, management of flood control safety, and water resource scheduling in the Taihu Basin. HIGHLIGHTS This study focused on the flood risk in the main water source of Taihu Lake, i.e., the Zhexi Region, which had a direct and significant impact on the floods in the Taihu Basin.; Extreme hydrological and meteorological events were considered as the objects of this study. Their joint probability distribution and combined effects were directly related to the degree of flood risk.;Feiqing JiangZengchuan DongYun LuoMoyang LiuTao ZhouXinkui WangZhenye ZhuIWA Publishingarticlebivariate frequencycopulaextreme precipitationflood risk analysisreturn periodstaihu basinWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 4, Pp 1629-1648 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bivariate frequency copula extreme precipitation flood risk analysis return periods taihu basin Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	bivariate frequency copula extreme precipitation flood risk analysis return periods taihu basin Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Feiqing Jiang Zengchuan Dong Yun Luo Moyang Liu Tao Zhou Xinkui Wang Zhenye Zhu Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
description	Flood events are typically triggered by extreme precipitation in rain-dominant basins. In this study, to better understand the genetic mechanisms and characteristics of floods, copula functions are used to analyze the response of flood events to extreme precipitation. The coincidence probabilities of the typical extreme flood and precipitation events are calculated; different return periods of their arbitrary combinations are calculated, whereas the dangerous domains for flood control under different return periods are identified; furthermore, flood risk analysis under different extreme precipitation scenarios is performed via their conditional exceedance probabilities. The Xitiaoxi catchment (XC) and Dongtiaoxi catchment (DC) in the Zhexi Region of the Taihu Basin are selected as the study area. The results show that in four scenarios with precipitation frequencies of 80%, 90%, 93.33%, and 95%, the probabilities of the dangerous flood are 9.72%, 10.57%, 10.86%, and 11.01% in the XC, respectively, and 5.91%, 6.31%, 6.44%, and 6.51% in the DC, respectively. This study provides a practical basis and guidance for the computation of rainstorm designs, management of flood control safety, and water resource scheduling in the Taihu Basin. HIGHLIGHTS This study focused on the flood risk in the main water source of Taihu Lake, i.e., the Zhexi Region, which had a direct and significant impact on the floods in the Taihu Basin.; Extreme hydrological and meteorological events were considered as the objects of this study. Their joint probability distribution and combined effects were directly related to the degree of flood risk.;
format	article
author	Feiqing Jiang Zengchuan Dong Yun Luo Moyang Liu Tao Zhou Xinkui Wang Zhenye Zhu
author_facet	Feiqing Jiang Zengchuan Dong Yun Luo Moyang Liu Tao Zhou Xinkui Wang Zhenye Zhu
author_sort	Feiqing Jiang
title	Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
title_short	Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
title_full	Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
title_fullStr	Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
title_full_unstemmed	Response of flood events to extreme precipitation: two case studies in Taihu Basin, China
title_sort	response of flood events to extreme precipitation: two case studies in taihu basin, china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c18c5d6f62694382b644960334de176c
work_keys_str_mv	AT feiqingjiang responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT zengchuandong responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT yunluo responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT moyangliu responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT taozhou responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT xinkuiwang responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina AT zhenyezhu responseoffloodeventstoextremeprecipitationtwocasestudiesintaihubasinchina
_version_	1718443818861199360

Response of flood events to extreme precipitation: two case studies in Taihu Basin, China

Ejemplares similares