Sub-Diurnal Earth Rotation Variations Observed by VLBI
Authors:
- T. NilssonT. Nilsson
- J. BöhmJ. Böhm
- H. SchuhHSH. Schuh
Open Access
- 1 January 2010
- journal article
- Published by Walter de Gruyter GmbH in Artificial Satellites
- Vol. 45 (2) , 49-55
Abstract
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
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