摘要
根据 1962— 1991年共 30年的浙江省 4 3个地面站的降水资料 ,应用自然正交函数展开 ( EOF)方法 ,分析了浙江省 30年月降水量 .根据总体累积贡献率和空间分布特征 ,发现前三个典型场能较全面地反映浙江省降水分布的主要特征 ,其贡献率高达 81.69% ,据此得出三种降水分布类型 :全旱 (涝 )、南旱 (涝 )北涝 (旱 )、和东涝 (旱 )西旱 (涝 )
EOF method is used to analyse month rainfall of Zhejiang Province in this artical.The data from1962 to 1991are from 4 3surface stations of Zhejiang Province.According to total accumulation contributing rate and space distribution characteristics,we′ve found that the first three typical fields ( whose contributing rate is 81. 69% ) can indicate the main characteristics of Zhejiang rainfall distribution.So we′ve got three kinds of rainfall distribution:whole drought( waterlogging) and drought( water- logging) in the south and waterlogging( drought) in the north,drought( waterlogging) in the east and waterlogging( drought) in the west.
出处
《科技通报》
1998年第6期419-422,共4页
Bulletin of Science and Technology
关键词
EOF方法
降水量
分布特征
旱灾
涝灾
浙江
EOF method,Rainfall,Distribution characteristic,Drought disaster,Water logging disaster, Zhejiang province
