【摘要】 本文利用离散功率谱、连续功率谱分析方法对南京地区1950—1980年6月中旬31年的旬平均大气折射指数N单位多频振动进行了分析,结果发现:N单位值的主要振动周期为5.17年,N单位值峰值年与暖湿气流强弱有关。更多还原

【Abstract】 In this paper the discrete Power spectrum and continuous power spectrum are used to analyze the N-unit multi-frequency oscillation of the mean 10-day atmospheric refraction index in the area of Nanjing during the second 10 days of June from 1950 through 1980. It is shown that the cycle of the main oscillation for the N-unit value is 5.27 years and the year of the Peak N-unit value is related to the intensification of the warm and damP air flow.更多还原