OBSERVATIONAL STUDY ABOUT THE INFLUENCE OF THE SOLAR WIND ON THE EARTH'S ROTATION

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Abstract

The data on the variation of the Earth's rotation from IERS and the parameters of the solar wind measured by IPM 8 from July 1992 to September 1995 were used for a regression analysis. The results show that there seems to be a weak linear correlation between the velocity of the solar wind near the Earth, V, and the variation of the length of the day, Δ;lod1 calculated from UT1 and averaged over five days. The correlation coefficient is R = 0.186. The preliminary conclusion is that the Earth's rotation could be influenced by the variation of the velocity of the solar wind with a short time scale of several days.

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