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ILS Polar Motion Results at Interannual Time Scales

Published online by Cambridge University Press:  12 April 2016

Z.X. Li  and
P. Pâquet
Z.X. Li
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China e-mail: [email protected]
P. Pâquet
Affiliation:
Royal Observatory of Belgium, Av. Circulaire 3, 1180 Brussels, Belgium, e-mail: [email protected]

Abstract

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From a comparison between the ILS interannual polar motion and that calculated from the ILS latitude data but with different combinations of the ILS stations, the ILS polar motion has been studied at interannual time scales. It has been concluded that the interannual polar motion reduced from the ILS observations is influenced by an unknown phenomenon of the Earth; the obtained polar motion is reflecting, at interannual time scales, the real motion of the pole at certain epochs only.

Type
Part 5. Chandler and Annual Polar Motion: Observations and Excitation
Information
International Astronomical Union Colloquium , Volume 178: Polar Motion: Historical and Scientific Problems , 2000 , pp. 403 - 408
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Li, Z.X. 1998, Astron. Astrophys. Suppl. Ser. 129, 353–355.CrossRefGoogle Scholar
Yumi, S. and Yokoyama, K. 1980, Results of the International Latitude Service in a homogeneous system, 1899.9-1979.0, Central Bureau of the International Polar Motion Service.Google Scholar