太阳活动、厄尔尼诺与地球自转

Solar Activity, EL Nino Event and the Earth Rotation

本文分析了1830～1983年间太阳黑子数和厄尔尼诺(EL Nino)事件的关系。发现在黑子下降段出现的厄尔尼诺事件最多。而在极大年出现的厄尔尼诺事件最少。用时间叠加方法计算了1940～1983年间厄尔尼诺和地球自转参数的变化情况。得到在太阳黑子下降段的高值年出现的厄尔尼诺强度较大,对地球自转的影响很显著。而在黑子低值年出现的厄尔尼诺强度较小,对地球自转的影响不明显。最后提出了太阳活动对厄尔尼诺有放大作用的观点。

The relationships among the earth rotation, EL Nino events and sunspots were statistically analysed in this paper. The result shown that most of the EL Nino events occured in the declining years of the solar activity period(in these years the sunspot number goes down). The larger of the sunspot number in the EL Nino event year, the stronger the effect of the EL Nino event on the LOD (Iengh of day)will be。