摘要
运用水文气象地区线性矩频率分析法,选取广东省及周围缓冲区雨量站1 h、6 h、12 h和24 h年最大降水量资料,计算站点降雨频率估计值,分析暴雨高风险区划。结果表明:根据1 h、6 h、12 h和24 h年最大降水量资料广东省可分别划分为13、15、16和16个水文气象一致区,大部分一致区的最优分布为广义极值分布和广义正态分布;降雨频率估计值的空间分布态势在相同时段不同重现期下基本一致,而不同时段存在一定差异,1 h暴雨高风险区位于西南部沿海阳江附近,6 h、12 h和24 h暴雨高风险区位于阳江、珠江三角洲广州到清远和东部沿海陆丰附近区域。
Using 1 h,6 h,12 h,and 24 h annual maximum rainfall data of Guangdong Province and the buffer zone around it,the hydrometeorological regional L-moments frequency analysis method was used to obtain rainfall quantile estimates,and the high-risk rainstorm areas(HRRAs) of Guangdong Province were investigated.The results show that Guangdong Province was delineated into 13,15,16,and 16 hydrometeorological homogeneous regions(HMHRs) for 1 h,6 h,12 h,and 24 h annual maximum rainfall data,respectively.The best-fit frequency distributions for most HMHRs were generalized extreme-value and generalized normal distributions.The spatial distributions of rainfall quantiles for the same duration were similar at different return periods,while there were certain differences for different durations.HRRA of 1 h data was located near Yangjiang along the southwest coast;HRRAs of 6 h,12 h,and 24 h data were located around Yangjiang,Guangzhou of Pearl River Delta to Qingyuan,and Lufeng on the east coast.
作者
廖一帆
林炳章
丁辉
LIAO Yifan;LIN Bingzhang;DING Hui(School of Atmospheric Science,Nanjing University of Information Science and Technology,Nanjing 210044,China;Applied Hydrometeorological Research Institute,Nanjing University of Information Science and Technology,Nanjing 210044,China)
出处
《水资源保护》
EI
CAS
CSCD
北大核心
2022年第2期7-16,共10页
Water Resources Protection
基金
中国水利水电科学研究院山洪灾害防治项目(SHZH-IWHR-72)
江苏省水利科技项目(2018020)。
关键词
暴雨高风险区
地区线性矩频率分析
水文气象一致区
降雨频率估计值
广东省
high-risk rainstorm area
regional L-moments frequency analysis
hydrometeorological homogeneous region
rainfall quantile estimates
Guangdong Province
