广东省中山市60a降水特性分析  

Analysis of Precipitation Characteristics in Zhongshan City of Guangdong Province in the Past 60 Years

作　　者：梁彩欣 张守平 李欣曈 LIANG Caixin;ZHANG Shouping;LI Xintong(National Inland Waterway Regulation Engineering Research Center,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074

出　　处：《广东水利水电》2020年第4期33-37,共5页Guangdong Water Resources and Hydropower

基　　金：水体污染控制与治理科技重大专项(编号:2018ZX07105-002)。

摘　　要：选取中山市3个雨量站1955—2014年日降水量资料,并以此为基础运用滑动平均法、Mann-Kendall方法、目估适线法等方法,从趋势分析和结构分析上对中山市降水特性演变规律进行研究。结果表明:中山市近60a降水量呈“减—增—减—增”平缓波动,主要突变点在1959和2012年,近几年降水量呈上升趋势,主要由日降水强度增加引起;从降雨结构看,在特丰水年的降雨组成以暴雨及以上等级的降雨为主;分析不同量级降水频率,发现大强度降水整体上升、小强度降水比例下降的结构变化,降水潜力增加,应注意暴雨天防洪减汛。Based on the daily precipitation data from 1955 to 2014 of three rainfall stations in Zhongshan City,the evolution law of precipitation characteristics in Zhongshan City is studied from the perspective of trend analysis and structure analysis by using the methods of moving average,Mann Kendall nonparametric rank test,visual assessment and line fitting.The results show that the precipitation in Zhongshan City in recent 60 years fluctuates gently,the main mutation point is in 1959 and 2012,and the precipitation in recent years shows an upward trend,which is mainly caused by the increase of daily precipitation intensity;from the perspective of rainfall structure,the rainfall composition in the extremely wet year is mainly composed of rainstorm and above grade rainfall,and the analysis of different precipitation frequency shows that the whole heavy rainfall is found The structural change of the proportion of rising and low-intensity precipitation and the increase of precipitation potential should pay attention to flood control and reduction in rainstorm days.

关 键 词：中山市 降水特征 Mann-Kendall方法 趋势分析 结构分析 

分 类 号：P333[天文地球—水文科学]