水资源与水工程学报2024，Vol.35Issue(3)：81-89,9.DOI:10.11705/j.issn.1672-643X.2024.03.10
降雨空间分辨率对城市内涝模拟敏感性研究
Sensitivity of rainfall data spatial resolution to urban inundation simulation
摘要
Abstract
To study the impact of rainfall spatial resolution on the simulation of urban inundation and the sensitivity of a one-two-dimensional coupled urban inundation model,this research selected the Xiaozhai area of Xi'an City as the study area.Based on three rainfall datasets provided by the Xi'an Meteorologi-cal Bureau,the spatial interpolation algorithm of inverse distance weighting was used to obtain five rain-fall spatial resolutions:0.2,0.5,1.0,2.0,and 4.0 km.The Lorenz curve and Gini coefficient were introduced to assess the uniformity of different rainfall spatial resolutions,and they were used to drive the one-two-dimensional coupled urban inundation model for simulation analysis.The results indicate that for the three rainfall events,the Gini coefficients corresponding to the 0.5 km rainfall spatial resolution are 0.163,0.201,and 0.165,indicating uniformly distributed evaluations.As the rainfall spatial reso-lution decreases,the Gini coefficient gradually decreases,while the relative errors of peak inundation ar-ea,relative changes in inundation volume,and relative changes in inundation depth all gradually in-crease.In terms of these three hydraulic evaluation indicators,the simulation error is the smallest for the rainfall spatial resolution of 0.5 km,and this resolution is identified as the sensitive rainfall spatial reso-lution.关键词
降雨空间分辨率/城市雨洪模型/洛伦兹曲线/基尼系数/西安市小寨片区Key words
rainfall spatial resolution/urban inundation model/Lorenz curve/Gini coefficient/the Xi-aozhai area of Xi'an City分类
建筑与水利引用本文复制引用
乔贤玲,侯精明,刘园,陈光照,王添,郭庆元,高徐军,王岩..降雨空间分辨率对城市内涝模拟敏感性研究[J].水资源与水工程学报,2024,35(3):81-89,9.基金项目
国家自然科学基金项目(52079106) （52079106）
中德合作交流项目(M-0427) （M-0427）
陕西省自然科学基础研究计划-引汉济渭联合基金重点项目(2022JC-LHJJ-09) （2022JC-LHJJ-09）
宁夏回族自治区重点研发计划项目(2022BEG02020) （2022BEG02020）
