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李光浩,金龍德 全北大學校 敎育大學院 1994 敎育論叢 Vol.14 No.-
Statistics, Trends and periodicities in the seasonal and annual area precipitation for two standard weather stations and five auxiliary stations in Chonbuk, on the basis of precipitation records of over 70 years, were analysed primarily by using correlation coefficient, regression and power spectrum analysis. It was shown that secular variations of seasonal precipitation by five-year moving average is tended to increase for all seasonal precipitation except for summer. Secular variations of seasonal precipitation by five-year moving average using. Thiessen method have the same tendency above mentioned. It Means that abnormally much precipitation would be occurred once during the 24 years to 37 years for each season. The power spectrum analysis indicates four significant cycles of 2.6-3.6 year, 5.6 year, 12.5 year and 20.0 year oscillations for annual and seasonal values. Particularly, 2.6, 5.6, 12.5, 20.0 year cycles occur more clearly in spring, summer and annual, autumn and winter, winter, respectively.