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Variations of Short Periodical Oscillations of Earth Rotation

Published online by Cambridge University Press:  07 August 2017

B. Kołaczek
B. Kołaczek*
Affiliation:
Space Research Center, PAS Bartycka 18A, 00-716 Warsaw, Poland

Abstract

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The short periodical oscillations of variations of Earth rotation parameters (ERP) with periods of about 120, 100, 80, 60, 50 days are the most energetic oscillations after the Chandler and seasonal ones. These oscillations were analysed using SLR and VLBI data and the narrow Ormsby band-pass and Fourier Transformation filters. Polhodes of these oscillations for the last several years were computed. Amplitudes of these oscillations are of the order of 2–5 mas and are changeable. They are modulated with a period of about 600 days.

Type
Impact on Geodynamics
Information
Symposium - International Astronomical Union , Volume 156: Developments in Astrometry and their Impacts on Astrophysics , 1993 , pp. 291 - 296
Copyright
Copyright © Kluwer 

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