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A note on Earth's rotation angular velocity in the general-relativity framework

V. A. Brumberg, E. Groten

Journal of Geodesy, 75(12), 673-676 (2001)

Keywords: General relativity, Reference systems, Earth's rotation angular velocity

About the paper Full text


The value of the Earth's rotational angular velocity determined from observations is given in the GCRS (geocentric celestial reference system) defined by Resolution B1 of the 2000 IAU General Assembly. The same quantity derived from dynamical theories of the Earth's rotation, such as SMART97, is referred to the DGRSC (dynamically non-rotating ecliptical reference system). The relativistic theory of reference systems (RSs) enables unambiguous general-relativity relations between these quantities to be derived.