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Contribution of the atmosphere to the seasonal changes in earth's rotation

文献类型：期刊论文

作者Yu, NH; Zheng, DW
刊名CHINESE ASTRONOMY AND ASTROPHYSICS
出版日期2000-10-01
卷号24期号:4页码:495-500
关键词atmospheric angular momentum earth rotation variations seasonal time scale
英文摘要Using new data of atmospheric angular momentum for the period 1975-1995, the contributions of the atmosphere to the changes in LCD and polar motion on the seasonal time scale are investigated. The results show that, when the effects of wind and atmospheric pressure are considered, the atmosphere's contribution on the annual and semi-annual time scabs may reach, respectively, 95% and 88%. We also give some quantitative results of the atmosphere's excitation of polar motion. On the annual time scale, the contribution to the X-component of polar motion is 16% and that to the Y-component is 43%. On the semi-annual time scale, the contributions to the X- and Y-components are, respectively, 9% and 30%. From the above results, it is clear that the contribution of the ocean should also be included in a more complete solution of the problem of excitation of the earth's rotation.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]ANGULAR-MOMENTUM ; POLAR MOTION ; ORIENTATION
收录类别SCI
语种英语
WOS记录号WOS:000165799700011
源URL[http://119.78.226.72/handle/331011/28271]  
专题上海天文台_星系宇宙学重点实验室
作者单位Chinese Acad Sci, Shanghai Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Yu, NH,Zheng, DW. Contribution of the atmosphere to the seasonal changes in earth's rotation[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2000,24(4):495-500.
APA Yu, NH,&Zheng, DW.(2000).Contribution of the atmosphere to the seasonal changes in earth's rotation.CHINESE ASTRONOMY AND ASTROPHYSICS,24(4),495-500.
MLA Yu, NH,et al."Contribution of the atmosphere to the seasonal changes in earth's rotation".CHINESE ASTRONOMY AND ASTROPHYSICS 24.4(2000):495-500.

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来源：上海天文台

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