用频率分布数字特征对中国近海水文气候区划的验证

A VERIFICATION ON DIVISION OF HYDROCLIMATIC AREA IN CHINA SEAS USING DIGITAL CHARACTERISTICS OF FREQUENCY DISTRIBUTION

利用国家海洋信息中心国内海洋文档资料（1953－1988）和日本气象厅《东中国海表层月平均水温30年（1953－1982）报》等资料，将中国近海按153个统计区统计了水、气温频率分布的数字特征值，经主因子分析，求得累积贡献率达95．29％的3个主要因子．再用模糊聚类软划分方法将中国近海划分为3个气候带和10个气候区，本方法所取特征值能完整地反映数列的频率分布特征，避免了选取气候特征值时的主观随意性。

1953-1988 oceanographic data files on the China Seas prepared by the National Marine Data and Information Service, S. O, A., China and the '30-years (1953-1982) Reports of Sea Surface Monthly Mean Temperature in the East China Sea by the Meteorological Agency, Japan', were used to calculate the digital characteristics of frequency distribution of sea and air temperature in 153 areas over the China Seas. Principal factor analysis and fuzzy cluster ISODATA were hsed to divide the China Seas hydroclimatic area into three climatic belts including ten climatic areas.It is concluded that the characteristic values derived by this method may completely reflect the characteristics of frequency distribution of sea and air temperature in the studied area and the resulting division of hydroclimatic area is fully coincident with the author's former result (Chen and Yao, 1994).