Earth Rotation Velocity in Relation with Different Reference Frames View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1995

AUTHORS

V. A. Brumberg

ABSTRACT

The high precision of present observations makes it reasonable to clear up a question about GRT (general relativity theory) corrections in the problem of Earth’s rotation. The answer is that one may almost forget about GRT corrections when dealing in an adequate reference system (RS). The problem of Earth’s rotation may be related to the relativistic hierarchy of RS started in (Brumberg and Kopejkin, 1989) and completed in (Klioner, 1993). Let letters B, G and T be related to barycentric, geocentric and topocentric RS, respectively. Let DRS and KRS be dynamically nonrotating or kinematically nonrotating RS, respectively. From the dynamical equations of rotation it follows that the most adequate system for studying the Earth’s rotation is DGRS. Apart from the geophysical factors the rotation of the Earth in this system is fairly well approximated by the rigid-body rotation with some angular velocity ῶi . The same rotation of the Earth as considered in BRS and DTRS may be also approximated by the rigid-body rotation but with some additive relativistic corrections and with other angular velocities ωi and ωi, respectively. Substituting these three rotation relations into four-dimensional BRS-DGRS and DGRS-DTRS transformations one may express ωi and ωi in terms of ῶi and determine the additive relativistic corrections in BRS and BTRS. These corrections are of importance for treating kinematics problems in various coordinate systems and for obtaining physically meaningful solutions of the dynamical equations of rotation in the barycentric reference system.The complete text will be published in Journal of Geodynamics. More... »

PAGES

293-293

Book

TITLE

Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry

ISBN

978-0-7923-3443-9
978-94-011-0069-4

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-94-011-0069-4_48

DOI

http://dx.doi.org/10.1007/978-94-011-0069-4_48

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1028338684


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