中文版 | English
CSpace
Automatic procedure for selecting flood events and identifying flood characteristics from daily streamflow data
Zhang, Qin1; Zhang, Liping1,2; She, Dunxian1,2; Wang, Shuxia1; Wang, Gangsheng1,2; Zeng, Sidong3
2021-11-01
摘要The selection of flood events and determination of flood characteristics (e.g. start and end dates, peak discharge, volume, and duration) are the first critical steps for flood analyses. To obtain the key flood information accurately, we used the automatic peak over threshold (POT) model for flood sampling and proposed an automatic approach to determine flood characteristics using the master recession curve analysis (MRC) method. We further developed a graphical user interface (GUI) and toolbox for this procedure in MATLAB. Model parameter estimation experiment (MOPEX) data from 423 stations were used to evaluate the proposed method. Our results suggest that the proposed procedure performs well for watersheds with diverse characteristics. The developed toolbox can be conveniently applied to other watersheds for flood sampling and the characterisation of flood events, thus helping reduce the uncertainty in subsequent flood analyses, such as multivariable flood frequency and trend analyses.
关键词Peak over threshold (POT) MATLAB Flood characteristics Master recession curve Baseflow separation Flood hydrograph
DOI10.1016/j.envsoft.2021.105180
发表期刊ENVIRONMENTAL MODELLING & SOFTWARE
ISSN1364-8152
卷号145页码:12
通讯作者Zhang, Liping(zhanglp@whu.edu.cn) ; She, Dunxian(shedunxian@whu.edu.cn)
收录类别SCI
WOS记录号WOS:000703664500003
语种英语