[P-EM08] Space Weather and Space Climate

[PEM08-P10] Measurement of cosmogenic 10Be in endogenic travertine deposits at Baishuitai

*Hiroko Miyahara¹, Hongyang Xu², Limin Zhou², Kazuho Horiuchi³, Hiroyuki Matsuzaki⁴ (1.College of Art and Design, Musashino Art University, 2.East China Normal University, 3.Hirosaki University, 4.The University Museum, The Univ. of Tokyo)

Keywords:

Cosmogenic nuclide,solar activity,cosmic ray variations

Past solar and cosmic ray variations are often reconstructed using the carbon-14 in tree rings and the beryllium-10 in ice cores. Previous studies have suggested that beryllium-10 in travertine deposits may also reflect the temporal variation of cosmic rays and thus can be used to trace the past solar activity variations. In this paper, we report our preliminary results obtained from the measurement of beryllium-10 in annual layers of travertine from Baishutai, China.