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Advances in the Unified Theory of the Rotation of the Nonrigid Earth

Published online by Cambridge University Press:  12 April 2016

Juan Getino  and
José M. Ferrándiz
Juan Getino
Affiliation:
Grupo de Mecánica Celeste, Facultad de Ciencias, Valladolid, Spain
José M. Ferrándiz
Affiliation:
Dept. Applied Mathematics, University of Alicante, Alicante, Spain

Extract

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Investigations of nonrigid-Earth rotation usually rely on the convolution of a transfer function with a rigid-Earth solution. A possible alternative is to develop a unified theory to encompass in only one body both rigid and nonrigid effects. It is represented in the Hamiltonian theory by Getino and Ferrándiz (GF). This theory combines the convenience of being a really analytical theory with good practical performance, since the residuals with respect to observations are also at the same ±1 mas level as the present IERS series.

We report on more recent results we obtained in the last year, not collected in the “Considerations” paper of the WGN (joint IAU/IUGG Working Group on Nutations).

Type
Section 2. Improved Definitions and Models
Information
International Astronomical Union Colloquium , Volume 180: Towards Models and Constants for Sub-Microarcsecond Astrometry , March 2000 , pp. 236 - 241
Copyright
Copyright © US Naval Observatory 2000

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