Solar cycles around the onset of the Maunder Minimum

Hiroko Miyahara, Fuyuki Tokanai, Toru Moriya, Mirei Takeyama, Hirohisa Sakurai, Kazuho Horiuchi, Hideyuki Hotta

Presentation information

[E] Poster

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM08] Space Weather and Space Climate

Sat. Jun 5, 2021 5:15 PM - 6:30 PM Ch.03

convener:Ryuho Kataoka(National Institute of Polar Research), A Antti Pulkkinen(NASA Goddard Space Flight Center), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University), Kaori Sakaguchi(National Institute of Information and Communications Technology)

5:15 PM - 6:30 PM

[PEM08-P08] Solar cycles around the onset of the Maunder Minimum

*Hiroko Miyahara¹, Fuyuki Tokanai², Toru Moriya², Mirei Takeyama², Hirohisa Sakurai², Kazuho Horiuchi³, Hideyuki Hotta⁴ (1.College of Art and Design, Musashino Art University, 2.Faculty of Science, Yamagata University, 3.Graduate School of Science and Technology, Hirosaki University, 4.Graduate School of Science, Chiba University)

Keywords:Solar cycle, Grand solar minimum, The Maunder Minimum, Carbon-14

The Sun indicates long-term activity variations at the time scales of a few hundred years to a few millenia, and sometimes experience grand minima when number of sunspots significantly decreases for more than several decades. In order to understand the physical mechanism of such grand minima, we conducted high-precision measurements of carbon-14 in tree rings with annal resolution and reconstructed the solar cycles around the onset of the Maunder Minimum (1645-1715 CE). In this presentation, we report the transition of cycle lengths indicated by the high-precision data.