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The oceans and the Earth's rotation

Published online by Cambridge University Press:  03 August 2017

P. Brosche
P. Brosche*
Affiliation:
Observatium Hoher List, de Universitäts-Sternwarte Bonn, D-5568 Daun, F.R. Germany

Abstract

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In the long run, the tidal interaction between the Moon and the solid Earth is mediated by the oceans. It produces the retardation of the Earth's rotation known as ‘tidal friction’. Due to the changing configuration of the continents, it is a non-monotonic function of time. Tides of the solid Earth dominate the short-periodic tidal effects while the exchange with the atmosphere is preponderant in climatic changes, especially with an annual signature. It is shown that the influences of the oceans within such short time-scales must be taken into account for tidal and for non-tidal variations as well if one wants to model the Earth's rotation at the cm-level corresponding to the most advanced observational techniques.

Type
VI. Causes of Variations in Earth Rotation Parameters
Information
Symposium - International Astronomical Union , Volume 128: Earth's Rotation and Reference Frames for Geodesy and Geodynamics , 1988 , pp. 349 - 352
Copyright
Copyright © Reidel 1988 

References

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