English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/25907
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Earth rotation based on the celestial coordinates of the celestial intermediate pole. I, The Dynamical equations.

AuthorsCapitaine, N.; Folgueira, M. ; Souchay, J.
Reference systems
Celestial mechanics
Issue Date2006
PublisherEDP Sciences
CitationAstronomy and Astrophysics - Les Ulis, 445 : 347-360 (2006)
AbstractWe present a study of the Earth’s rotational motion in terms of the Earth Orientation Parameters (EOP) of the new paradigm that is recommended by the IAU 2000 resolutions to transform between the celestial and terrestrial reference systems. This paper presents the first part of the study whose purpose is to establish the dynamical equations of the rotation of a rigid Earth as a function of these new parameters. Starting from Euler dynamical equations for a rigid Earth, and using expressions for the components of the instantaneous rotation vector as functions of the celestial coordinates X, Y of the Celestial intermediate pole (CIP) and of the Earth rotation angle (ERA), the equations of Earth rotation were obtained explicitly in terms of those parameters. Taking into account the order of magnitude of the terms of these equations, we obtain the most appropriate form of the equations for a practical integration. We then investigated the possible methods of integration for providing semi-analytical solutions for the X and Y variables in the axially symmetric case. We also perform a number of tests regarding the efficiency of these methods, based on the IAU 2000 precession-nutation. We extended this approach to a deformable Earth, based on integration constants compliant with the new P03 precession model.
Publisher version (URL)http://dx.doi.org/10.1051/0004-6361:20053778
Appears in Collections:(IAG) Artículos
Files in This Item:
File Description SizeFormat 
articulo26_2006.pdf221,12 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.