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Rotation of the Earth, Solar Activity and Cosmic Ray Intensity : Volume 32, Issue 7 (02/07/2014)

By Barlyaeva, T.

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Book Id: WPLBN0004002480
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Rotation of the Earth, Solar Activity and Cosmic Ray Intensity : Volume 32, Issue 7 (02/07/2014)  
Author: Barlyaeva, T.
Volume: Vol. 32, Issue 7
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Abarca-Del-Rio, R., Bard, E., & Barlyaeva, T. (2014). Rotation of the Earth, Solar Activity and Cosmic Ray Intensity : Volume 32, Issue 7 (02/07/2014). Retrieved from

Description: CEREGE, Aix-Marseille Université, CNRS, IRD, Collège de France, 13545 Aix-en-Provence, France. We analyse phase lags between the 11-year variations of three records: the semi-annual oscillation of the length of day (LOD), the solar activity (SA) and the cosmic ray intensity (CRI). The analysis was done for solar cycles 20–23. Observed relationships between LOD, CRI and SA are discussed separately for even and odd solar cycles. Phase lags were calculated using different methods (comparison of maximal points of cycles, maximal correlation coefficient, line of synchronization of cross-recurrence plots). We have found different phase lags between SA and CRI for even and odd solar cycles, confirming previous studies. The evolution of phase lags between SA and LOD as well as between CRI and LOD shows a positive trend with additional variations of phase lag values. For solar cycle 20, phase lags between SA and CRI, between SA and LOD, and between CRI and LOD were found to be negative. Overall, our study suggests that, if anything, the length of day could be influenced by solar irradiance rather than by cosmic rays.

Rotation of the Earth, solar activity and cosmic ray intensity

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