文章基本信息

标题：New solution for the Earth’s free wobble and its geophysical implications
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作者：Wei Chen ; Wenbin Shen ; Xiaofeng Qin 等
期刊名称：Geo-spatial Information Science
印刷版ISSN：1009-5020
电子版ISSN：1993-5153
出版年度：2010
卷号：13
期号：1
页码：49-55
DOI：10.1007/s11806-010-0184-2
出版社：Taylor and Francis Ltd
摘要：In this paper, the theory of the free wobble of the triaxial Earth is developed and new conclusions are drawn: the Euler period should be actually expressed by the first kind of complete elliptic integral; the trace of the free polar motion is elliptic and the orientations of its semi-minor and major axes are approximately parallel to the Earth’s principal axes A and B, respectively. In addition, the present theory shows that there is a mechanism of frequency-amplitude modulation in the Chandler wobble, which might be a candidate for explaining the correlation between the amplitude and period of the Chandler wobble.
关键词：triaxial Earth; elliptic free polar motion; variation of Chandler period; frequency-amplitude modulation