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Impact of Geophysical Fluids on UT1

Published online by Cambridge University Press:  21 October 2010

Richard S. Gross
Richard S. Gross*
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109USA email: [email protected]
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Abstract

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Geophysical fluids have a major impact on the Earth's rotation. Tidal variations within the oceans are the predominant cause of subdaily length-of-day (lod) variations while those within the solid body of the Earth are a major source of longer period variations; tidal dissipation within the solid Earth and oceans cause a secular change in lod. Fluctuations of the atmospheric winds are the predominant cause of nontidal lod variations on sub-decadal time scales while decadal variations are caused by interactions between the fluid core and mantle.

Keywords

Earthtime
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 213 - 214
Copyright
Copyright © International Astronomical Union 2010

References

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