1. 1.中国科学院上海天文台 上海 200030； 2.中国科学技术大学 合肥 230026
• 收稿日期:1997-01-18 修回日期:1997-03-21 出版日期:1997-12-01
• 通讯作者: 李金岭,男,1964年9月生,副研究员,主要从事天文地球动力学研究。
• 基金资助:

国家攀登项目“现代地壳运动和地球动力学”和国家自然科学基金项目“地球自转运动与全球变化”(编号:19473110)资助。

### DECADAL FLUCTUATIONS OF THE EARTH ROTATION AND POSSIBLE MECHANISMS OF THE CORE-MANTLE COUPLING

LI Jinling 1，ZHENG Dawei 1，FU Rongshan 2

1. 1.Shanghai Astronomical Observatory,the Chinese Academy of Sciences,Shanghai 200030；
2.University of Science and Technology of China,Hefei 230026
• Received:1997-01-18 Revised:1997-03-21 Online:1997-12-01 Published:1997-12-01

In this paper, the general characteristics of the Earth rotation variation and the possible geophysical excitation sources are briefly reviewed. The relations between the decadal fluctuations of the Earth rotation and the core mantle coupling is highlighted. Several possible mechanisms of the core mantle coupling are introduced. The detection of seismic waves is essential to our understanding of the Earth’s interior. In order to study and finally affirm various phenomena and the corresponding geophysical excitation factors, it is very important to comprehensively analyze the information from space geodesy, gravitational measurements and paleogeomagnetic records as well as results from geophysical studies of theories and models.

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 [1] 傅容珊,李力刚,郑大伟,薛霆啸. 核幔边界动力学——地球自转十年尺度波动[J]. 地球科学进展, 1999, 14(6): 541-548.
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