| Autor: |
Chol-jun, Kim, Jik-su, Kim |
| Rok vydání: |
2019 |
| Předmět: |
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| Druh dokumentu: |
Working Paper |
| Popis: |
We investigated the Korean records of naked-eye sunspot observations and found an implication of periodicity of about 200-year. Adding the Chinese records we showed that the historical naked-eye sunspot observations have the similar periodicity. Recent some works showed that there would be no intrinsic periodicities except 11-year cycle. We adopt the new approach called samplogram to test sampling stability of cycles in terms of power spectra and difference series and show that the Suess/de Vries cycle of about 207-year is a deterministic cycle of the stochastic solar activity. Also we show that occurrences of grand minimum are not necessarily expected with the Suess/de Vries cycle and it is possible to appear double or multiple grand maxima without a grand minimum within them. |
| Databáze: |
arXiv |
| Externí odkaz: |
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