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Short-term variation of the Earth's rotation and the solar activity

Published online by Cambridge University Press:  03 August 2017

D. Djurovic  and
P. Paquet
D. Djurovic
Affiliation:
(*) University of Belgrade, Inst. of Astronomy, Belgrade
P. Paquet
Affiliation:
(+) Royal Observatory of Belgium, Brussels

Abstract

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In 1980, Feissel et al. identified a quasi–cyclic variation of 55 days in the irregularities of the Earth Rotation (ER) later detected in the Atmospheric Angular Momentum (AAM) (Langley et al., 1981). The purpose of this work is to analyse whether the causes of this cycle could lie in the physical processes of the Sun. The Wolf Numbers (WN) are used as parameters of the solar activity. Their spectral analysis over the period 1967–1985 shows such a component at 51 days. Analysis of three other periods, among which is the MERIT campaign, confirms it as well as during low or increasing solar activity periods.

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. 353 - 358
Copyright
Copyright © Reidel 1988 

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