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通过对东亚大槽强度与ＥＩＮｉｎｏ事件的统计分析，揭露了在多数ＥＩＮｉｎｏ（反ＥＩＮｉｎｏ）事件的前期冬季，东亚大槽强度偏弱（偏强）的事实。对１０个ＥＩＮｉｎｏ事件的合成分析亦表明，ＥＩＮｉｎｏ前冬季东亚西太平洋中高纬地区５００ｈＰａ为显著的高度正距平。谱分析进一步指出，冬季东亚大槽强度与赤道东太平洋各季ＳＳＴ有密切的关系，它们都具有显著的３－４年周期振荡，且槽强度的变化超前于ＳＳＴ约４－８个月。
Based on the statistical analysis of the East Asian gully strength and the EINino event, the fact that the East Asian gully strength is weaker (stronger) in the pre-winter season of most EINino (anti-EINino) events is revealed. A composite analysis of 10 EINino events also showed that 500 hPa at mid-high latitudes of the EINino region in the pre-winter East Asia and the West Pacific was a significant positive anomaly. The spectral analysis further points out that the East Asian trough intensities are closely related to the SSTs of the eastern equatorial Pacific during the winter. Both of them have significant 3-4-year periodic oscillations and their trough intensities change ahead of SST for about 4-8 months.