Geophysical excitation of the Earth orientation parameters EOP and its contribution to GGOS

Dehant, Véronique;Viron, Olivier de;Barriot, Jean-Pierre
(2005) Journal of Geodynamics — Vol. 40, n° 4-5, p. 394-399 (2005)

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Authors
  • Dehant, VéroniqueUCLouvain
    Author
  • Viron, Olivier de
    Author
  • Barriot, Jean-Pierre
    Author
Abstract
We discuss how the geophysical fluids affect the Earth orientation parameters (EOP) and in particular polar motion and nutation. We show that the Earth orientation modeling is a perfect example of the integrated approach recommended by GGOS. GGOS considers the Earth system as a whole, including the solid Earth as well as the fluid components; geodesy observes and models the dynamics inside this system through the static and time-varying gravity field, the station displacements, and the Earth orientation parameters and the associated length-of-day variation, nutation and polar motion. Global-scale transfer in the Earth system and its geodetic consequences is proposed to be the central theme of GGOS. We show that the Earth orientation parameters perfectly fit this theme.
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Dehant, V., Viron, O. d., & Barriot, J.-P. (2005). Geophysical excitation of the Earth orientation parameters EOP and its contribution to GGOS. Journal of Geodynamics, 40(4-5), 394-399. https://doi.org/10.1016/j.jog.2005.06.004 (Original work published 2005)