本文用能谱方法分析了黄海的 海表面水温（SST）场的准周期变化。
Quasi-periodic variations of the sea surface temperature (SST) field from Huanghai Sea are analysed by using the energy spectrum method.
空间模式在时域上具有一定的振荡周期。其中，前滨模式以4天的准周期变化为主，滩肩模式则有28天的准周期性变化。
These modes have obviously oscillations in temporal domain, in which the foreshore mode has mainly quasi period about 4 days, while the quasi period for the beach berm mode is 2 8 days.
平均雾日较多的宜君、石泉和西安有较明显的年变化，大致有6年和8年的准周期。
The mean foggy days of Yijun, Shiquan and xi 'an exist obvious interannual change, about quasi-period of 6, 8 years.
ENSO与东亚夏季风降水的年际变化以及准二年周期有着明显的联系。
There is a considerable connection between ENSO and the interannual variations(QBO)of summer monsoon rainfall.
除东海年平均海温外，各海区年、季海温均具有2~4年的显著变化周期和准7年的变化周期。
Except annual average SST in East China Sea, annual, January and July average SST of all area had obvious change period of 2-4 years and change period of 7 years.
结果显示，青海南部高原地区春季最高气温的变化存在较明显的31~54年低频和2~4年高频准周期波动特征。
The result shows that there exist pronounced lower-frequency periodicities of 31~54 years and higher-frequency variations of 2~4 years.
结果显示，青海南部高原地区春季最高气温的变化存在较明显的31~54年低频和2~4年高频准周期波动特征。
The result shows that there exist pronounced lower-frequency periodicities of 31~54 years and higher-frequency variations of 2~4 years.
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