摘要
本文讨论了地球自转速率的年际变化,E1 Nino事件与大气及海洋异常活动的关系.我们的研究表明:信风的崩溃及洋流的东移是引起地球自转速率的年际变化与东太平洋赤道带海水增暖的主要原因.由动力学分析得到:大气的因素所造成的地球自转速率年际变化约占观测量的46.8%,而海洋的因素约起18.6%的作用.这一结果证实了用监测地球自转年际变化来预报E1 Nino事件的可能性.
It is shown in this paper that the collapse of the trade wind and eastward current of the ocean are the significant factors which induce the interannual variation in LOD and the warming up of sea water in the eastern equatorial Pacific. The dynamical analysis has been done, from which it is derived that the atmospheric anomaly contributes 46.8% observed amplitude in interannual variation of LOD and the eastely of oceanic current makes 18.6% of that. This substantiates that it is possible to make prediction of El Nino Event by monitoring the interannual variation in LOD.
出处
《天文学报》
CSCD
北大核心
1989年第3期310-314,共5页
Acta Astronomica Sinica
