南京地区大气折射指数的周期振动
投稿时间:1987-08-27  修订日期:1988-01-15  点此下载全文
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作者单位
戴铁丕 河北省气象台 
焦玉玲 河北省气象台 
马翠平 河北省气象台 
中文摘要:本文利用离散功率谱、周期图分析方法对南京地区1951—1980年6月上旬30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,30年中折射指数N单位值主要振动周期为5年,N单位值的峰值年与降水量峰值年相当吻合。
 
OSCILLATION OF THE ATMOSPHERIC REFRACTION INDEX OVER NANJING
Abstract:In this paper the distrete power spectrum and periodogram are usedto analyze the N-value multi frequency oscillation of the mean ten dayatmospheric refraction index in the area of Nanjing for the first ten days ofJune from 1951 through 1980.It is found that the main oscillation for the N-unit value has a cycle of five years in the 30-year period and the yearswith the peak N-value coincide quite well with those with the peak precipitation.
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