摘要
OnthebasisofNOAA/CPCdataofseasurfacetemperatureanomalyintheNinoregionsduringJan.1950-Dec.2003,thewaveletpowerspectrumofSSTwerestudiedwithsignificanceandconfidencetestingatdifferentscalesinthispaper.ItshowsthattheSSTareprovidedwithmulti-timescalesstructurenestedoneanother,andvaryonscalesof2-7years,8-20yearsand＞30years.Themostsignificantvariationofthewarmandcoldepisodesisinthe4-yearbandofperiod.Thepower,frequencystructureandconfidenceofthesameepisodearedifferentindifferentNinoregions.TheintensityofoscillationsisincreasingatlowfrequencybandsanddecreasingathighfrequencybandsfromeasttowestintheNinoregions,especiallyafter1970.
出版日期
2005年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
