About 200-Year Cycle of Solar Activity in the Mediaeval Korean Records and Reconstructions from Cosmogenic Radionuclides

2019/12/24 by Kim Chol-jun, Chol-jun, Kim, Kim Jik-su +1
Earth and Planetary Sciences · Physics and Astronomy · #Geophysics and Gravity Measurements #Historical Astronomy and Related Studies #Solar and Space Plasma Dynamics #astro-ph.SR

paper · pdf · doi:10.48550/arxiv.1912.11226

arxiv created 2019/12/24 · arxiv updated 2019/12/25

Abstract

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.

Related

• Sunspot periodicity
• Statistical properties of flares and sunspots over the solar cycle
• The sub- and quasi-centurial cycles in solar and geomagnetic activity data series/v.3
• Long-term evolution of solar activity and prediction of the following solar cycles
• Long-term Variability in the Length of the Solar Cycle