摘要
利用了傅里叶功率谱和小波功率谱分析方法,分析了太平洋中、东部地区海面温度异常时间序列的时频特征,发现了海面温度异常信号具有2~6年左右的周期特征。
Fourier power spectrum and wavelet power spectrum are used to analyze the time series of sea surface temperature anomaly in equatorial Pacific and southern Pacific, and the characteristics in time and frequency domain are derived. The result indicates that the time se ries of sea surface temperature anomaly contains period signal of two-year to six-year.
出处
《测绘信息与工程》
2009年第6期38-39,共2页
Journal of Geomatics
关键词
海面温度
厄尔尼诺
拉尼娜
谱分析
小波分析
sea surface temperature
E1 Nino
La Nina
spectrum analysis
wavelet analysis
