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Artificial Satellites

The Journal of Space Research Centre of Polish Academy of Sciences

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Volume 45, Issue 2 (Jan 2010)


Sub-Diurnal Earth Rotation Variations Observed by VLBI

T. Nilsson / J. Böhm / H. Schuh
Published Online: 2010-11-01 | DOI: https://doi.org/10.2478/v10018-010-0005-8

Sub-Diurnal Earth Rotation Variations Observed by VLBI

We analyse sub-diurnal Earth rotation variations obtained from the continuous VLBI experiments CONT02, CONT05, and CONT08. We find that the Earth rotation parameters estimated from these campaigns contain signals with periods ±12 hours, +24 hours, and in CONT02 also -8 hours, which cannot be explained by the current IERS sub-diurnal pole model. We investigate if these signals could be caused by atmospheric excitations, but find that these excitations are too small.

Keywords: Earth Rotation; VLBI

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About the article

Published Online: 2010-11-01

Published in Print: 2010-01-01

Citation Information: Artificial Satellites, ISSN (Online) 2083-6104, ISSN (Print) 0208-841X, DOI: https://doi.org/10.2478/v10018-010-0005-8.

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