@article{oai:nagoya.repo.nii.ac.jp:00016118,
 author = {三宅, 芙沙 and 永冶, 健太朗 and 増田, 公明 and 村木, 綏 and 中村, 俊夫 and Miyake, Fusa and Nagaya, Kentaro and Masuda, Kimiaki and Muraki, Yasushi and Nakamura, Toshio},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {Radiocarbon 14C is produced in the upper atmosphere by the galactic cosmic rays which are modulated by solar magnetic activity. Its content in tree-rings is retained for record of the past cosmic ray intensity and the solar activity. We have measured the 14C content in Japanese cedar tree rings from 602 AD to 1072 AD with 2-year resolution. The 13-year periodicity was detected by the periodic analysis on the 14C content data in a grand solar minimum from 650 to 720 AD (Maunder-type minimum). This periodicity may come from the solar cycle (Schwabe cycle). It is the third case of the increasing of Schwabe cycle length in the Maunder type solar minimum, after the Maunder minimum and the BC4 minimum., 名古屋大学年代測定総合研究センターシンポジウム報告},
 pages = {63--68},
 title = {樹木年輪中放射性炭素濃度測定による7-8世紀の太陽活動周期の研究},
 volume = {23},
 year = {2012}
}