[P-EM12] Space Weather and Space Climate

[PEM12-P10] Examination of ¹⁰Be in travertine sediment as a possible tool to reconstruct past solar activity

*Hongyang Xu^1,2、Hiroko Miyahara²、Kazuho Horiuchi³、Hiroyuki Matsuzaki⁴、Hailong Sun⁵、Weijun Luo⁵、Xiangmin Zheng¹、Yusuke Suganuma^6,7、Shijie Wang⁵、Limin Zhou¹ (1.East China Normal University、2.Musashino Art University、3.Hirosaki University、4.University of Tokyo、5.Chinese Academy of Sciences、6.National Institute of Polar Research、7.The Graduate University for Advanced Studies (SOKENDAI))

キーワード：Beryllium-10, cosmogenic nuclide, solar activity, endogenic travertine

In this study, we explore the possibility of using travertine sediment for reconstructing the past solar activity. We obtained an annual ¹⁰Be record from travertine deposit from the modern period and compared with the neutron monitor data. We discuss a possible methodology to calibrate the climatological impact on ¹⁰Be deposition and to obtain the signal of past solar and cosmic-ray variations.