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Quasi-biennial oscillations of solar activity are investigated using several global indices. The Singular Spectrum Analysis is used to separate out and study quasi-biennial oscillations; this method is one of the modifications of the main components method. The principal components of the solar cycle are stable 11-year, secular, and quasi-biennial variations. The periods and shapes of individual variations in each quasi-biennial train depend on the length and power of the particular 11-year cycle. 相似文献
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Geomagnetism and Aeronomy - The article analyzes the existing theoretical models of the formation of the solar system and the early physical conditions on Earth from the point of view of the... 相似文献
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