Hamiltonian theory for the non-rigid Earth: Semidiurnal terms

Citation
J. Getino et al., Hamiltonian theory for the non-rigid Earth: Semidiurnal terms, ASTRON ASTR, 370(1), 2001, pp. 330-341
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
0004-6361 → ACNP
Volume
370
Issue
1
Year of publication
2001
Pages
330 - 341
Database
ISI
SICI code
0004-6361(200104)370:1<330:HTFTNE>2.0.ZU;2-G
Abstract
The purpose of this paper is to determine the contributions to the nutation series arising from the triaxiality of a non-rigid Earth model composed of a rigid mantle and a liquid core. With this aim, the canonical formulation of the rotation of the non-rigid Earth developed by Getino and Ferrandiz i s applied in order to study the semidiurnal terms arising from the C-22 and S-22 geopotential coefficients. Once the corresponding generating function is calculated, analytical expressions of the Andoyer and figure planes are derived. We also provide numerical nutation series based on the analytical formulae.