Thousand-Year Cycle Signals in Solar Activity |
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Authors: | L H Ma |
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Institution: | (1) National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China |
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Abstract: | Long-term variations of solar activity closely relate to terrestrial phenomena. More and more people attach importance to
studies of long-term fluctuations of solar variation. However, because direct observations of solar activity are available
only for the past four centuries, such studies are few. In this work, using the wavelet technique, the author investigates
long-term fluctuations of reconstructed sunspot number series covering the past 11 400 years, with emphasis on the thousand-year
cycle signals of solar variation. The results show a thousand-year cycle in solar activity. |
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Keywords: | Solar activity Thousand-year cycle Wavelet transform |
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