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Long-Period Perturbations in Terrestrial Reference Frames

Published online by Cambridge University Press:  12 April 2016

E. Groten ,
S.M. Molodensky  and
J. Zwielich
E. Groten
Affiliation:
Institute of Physical GeodesyTechnische Hochschule Darmstadt Petersenstraβe 13Germany
S.M. Molodensky
Affiliation:
Institute of Physical GeodesyTechnische Hochschule Darmstadt Petersenstraβe 13Germany
J. Zwielich
Affiliation:
Institute of Physical GeodesyTechnische Hochschule Darmstadt Petersenstraβe 13Germany

Abstract

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Oceanic and fluid core effects inherent in polar motion and 1.o.d. -data were analyzed and related results are discussed in detail.

A new exact analytic solution to the hydrodynamic equations is obtained, which describes tidal motions at low frequencies in a homogeneous, incompressible, inviscid liquid core with arbitrary core-mantle topography. Some geophysical and astrometrical consequences of this solution are considered.

The numerical estimation of the deviations of the pole tide from the static one is obtained. A new hypothesis is proposed that the known interrelation between long-term amplitude and frequency variations in Chandler wobble may be attributed to the influence of turbulent friction of non-equilibrium pole tide.

Type
Part 1. Oral Papers
Information
International Astronomical Union Colloquium , Volume 127: Reference Systems , 1991 , pp. 167 - 196
Copyright
Copyright © United States Naval Observatory 1991

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