摘要
本文利用到率并矢相关谱估计方法，对青岛月平均气温（1896年1月—1992年12月）足赤道局部地区日表层水温（0°±0．5°S，165°±0．5°E；1986年12月6日—1991年11月16日）进行了谱分析，结果表明：青岛气温除具有1年周期的主频振荡和二倍峰频处0．5年周期二阶非线性耦合效应外，还隐含有2年周期的低频耦合振荡及0．4年周期的高频耦合振荡；赤道局部地区日表层水温含有90天，63天，50天，40天和29天等几个主要的低频周期振荡。
The spectra of the average monthly air tampERATURE(JAN. 1896 to DEC. 1992)of Qingdao and part of the Equator water surface layer temperature (0°±0.5S,165°±0.5E: 6, DEC. 1986 to 16, Nov. 1991) are investigated by means of thebinary correlation spectral method of sequence analysis. It is shown that thereexist 1-year period of predominant oscillation, 0.5-year period of the second ordernonlinear coupling effect near the twice peak frequency, as well as 2-year periodof lower frequency coupling oscillation and 0.4-year period of higher frequeneycoupling oscillation in the air temperature system of Qingdao and 90-day, 63-day,50-day, 40-day, 29-day lower frequeney period oscillations in part of the systemof the Equator water surface layer temperature.
出处
《海洋湖沼通报》
CSCD
北大核心
1999年第2期1-5,共5页
Transactions of Oceanology and Limnology
基金
国家自然科学基金!49776285
关键词
列率谱析
非线性资料
并矢相关谱
青岛
气温
Sequency spectral analysis
nonlinear data analysis
frequeney spectral analysis
