摘要
为提升浙江省水灾害防治能力,从流域区域和县级行政区域两种尺度分析不同时段和频率的面雨量及其统计参数在不同雨区、地形区分布特征和空间变化,并建立各区域面雨量时段-频率-面积-深度关系。结果表明:面雨量及其统计参数计算结果与相关规划设计值、《浙江省短历时暴雨》相关结果一致性较好,结果较合理;台风雨主控区和梅雨台风雨兼容区不同时段面雨量变差系数的平均值比梅雨主控区大;对于山区流域区域,在同一干流或支流上,相同时段和频率的面雨量及其变差系数与集水面积呈负相关关系;对于平原或县级行政区域,不同时段和频率的面雨量在台风雨主控区最高,梅雨台风雨兼容区和梅雨主控区次之。
In order to improve the capability of water disaster prevention and control in Zhejiang Province,the areal rainfall of different durations and frequencies and statistical parameters,as well as their spatial variations in different rainfall regions and terrain regions,were analyzed on watershed and county scales,and the relation of duration-frequency-area-depth was established for each region.The results show that the calculated results of areal rainfall and statistical parameters are in good agreement with relevant design values and the results in Short Duration Storm of Zhejiang Province,verifying the reasonability of the calculated results.The average values of the coefficient of variation C_(v) of areal rainfall for different durations are larger in the main control region of typhoon and Meiyu-typhoon-compatible region than in the main control region of Meiyu.For mountainous watershed areas,the areal rainfall and C_(v) of the same duration and frequency are negatively correlated with the catchment area in the same main stream or its branch.For plain areas or counties,the areal rainfall of different durations and frequencies is the highest in the main control region of typhoon,followed by the Meiyu-typhoon-compatible region and main control region of Meiyu.
作者
黄志珍
楼峰青
丁伯良
吕耀光
许红燕
吴珍梅
HUANG Zhizhen;LOU Fengqing;DING Boliang;LYU Yaoguang;XU Hongyan;WU Zhenmei(Hydrology Administration Center of Zhejiang Province,Hangzhou 310009,China)
出处
《水资源保护》
EI
CAS
CSCD
北大核心
2022年第4期117-123,130,共8页
Water Resources Protection
基金
浙江省水利厅重点科技计划项目(RB1702)。
关键词
降水特征
面雨量
统计参数
空间变化
浙江省
precipitation characteristics
areal rainfall
statistical parameters
spatial variation
Zhejiang Province
