[P-EM08] 宇宙天気・宇宙気候

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

*宮原 ひろ子¹、Xu Hongyang²、Zhou Limin²、堀内 一穂³、松崎 浩之⁴ (1.武蔵野美術大学造形学部、2.East China Normal University、3.弘前大学理工学部、4.東京大学総合研究博物館)

キーワード：宇宙線生成核種、太陽活動、宇宙線変動

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.