Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-26T02:27:22.795Z Has data issue: false hasContentIssue false
  • English
  • Français

Proposals for an Improved Nutation Formula

Published online by Cambridge University Press:  19 July 2016

E. Groten  and
S. Y. Zhu
E. Groten
Affiliation:
Institute Physical Geodesy Petersenstrasse 13 D-6100 Darmstadt Germany, Federal Republic ∗ on leave from Shanghai Observatory, Shanghai, China
S. Y. Zhu
Affiliation:
∗ on leave from Shanghai Observatory, Shanghai, China

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

There are a variety of reasons why in geodesy an improved formula for nutation is needed; related topics of interest are the determination of time-dependences in low degree zonals of the earth gravity field, ocean tide modeling, determination of odd harmonics of gravity field etc. in satellite geodesy. A combined model of deterministic and stochastic components is used in order to evaluate two new nutation series where, in an adjustment, mainly VLBI data (IRIS, GSFC, IERS) have been applied. Contrary to earlier revisions of the present nutation formula, not only the five significantly affected waves (annual, semi-annual, FCN etc.) are corrected but rather all constituents are revised in such a way that white noise residuals result from the adjusted observations, based on the new formula. Still remaining problems (such as the separation of long-period terms from precession etc.) are outlined.

Type
Part 3: Concepts, Definitions, Models
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 148
Copyright
Copyright © Kluwer 1990 

References

Zhu, S.Y., Groten, E. and Reigber, Ch., “Various aspects of numerical determination of nutation constants part II”, to appear in Astron. J. , 1989.Google Scholar