黄河中游河龙区间区域性暴雨特性分析  

Regional Rainstorm Characteristics Analysis on He-Long Reach of the Middle Reaches of the Yellow River

作　　者：雷鸣[1] 高治定[1] 宋伟华[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《人民黄河》2012年第8期17-20,共4页Yellow River

摘　　要：利用泰森多边形法,借助于计算机信息处理技术,筛选出黄河中游河龙区间1952—2006年243个区域性暴雨过程,按其日大于25 mm或大于50 mm降水范围分别超过2万、1万km2及持续日数情况,分为大面积暴雨、小面积暴雨、持续性大面积暴雨、持续性大雨、持续性大雨+暴雨5类区域性暴雨过程。分析了各类暴雨过程的发生季节和降水时空分布的定性、定量特征,综合讨论暴雨过程时空特征量的年际、年代际变化,探讨了气候回暖背景下出现的暴雨极值事件情况。Using Thiessen polygon method and computer information processing technology, filter out the Yellow River He-Long reach 1952 to 2006 ,＇243 regional rainstorm process, the day of rainfall was greater than 25 mm, 50 mm or greater rainfall in the reach of more than 20,000 km2 , 10 000 km2 and continuous days, and divided them into five-class regional rainstorm, which were a large area rain storm, small area rain storm, large area persistent rain storm, persistent rain and persistent heavy rain storm according to the region where there rainfall was greater than 25 mm or 50 mm was greater than 20 000 km2 or 10 000 km2 respectively and lasting days. The occurrence of seasonal rainfall spatial and temporal distri- bution of qualitative and quantitative characteristics was analyzed, with a comprehensive discussion of the process of spatial and temporal character- istics of heavy rainfall the amount of inter-annual, decadal. Meanwhile, the evens of rainfall extremes arising were studied.

关 键 词：区域性暴雨 暴雨面积 面暴雨量 时空特征 河龙区间 黄河中游 

分 类 号：TV125[水利工程—水文学及水资源] TV882.1