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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 名古屋大学加速器質量分析計業績報告書
  4. 24

屋久杉年輪中14C濃度測定による7-8世紀の太陽活動周期長の研究

https://doi.org/10.18999/sumrua.24.140
https://doi.org/10.18999/sumrua.24.140
bcbe13ef-d860-4dca-a648-702e9c62bd2f
名前 / ファイル ライセンス アクション
sumrua_24_140.pdf sumrua_24_140.pdf (4.2 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2014-06-09
タイトル
タイトル 屋久杉年輪中14C濃度測定による7-8世紀の太陽活動周期長の研究
言語 ja
その他のタイトル
その他のタイトル A study of the solar activity cycle in 7-8th centuries by the carbon 14 content in Yaku-cedar tree-rings
言語 en
著者 三宅, 芙沙

× 三宅, 芙沙

WEKO 83721

ja 三宅, 芙沙

Search repository
増田, 公明

× 増田, 公明

WEKO 83722

ja 増田, 公明

Search repository
中村, 俊夫

× 中村, 俊夫

WEKO 83723

ja 中村, 俊夫

Search repository
Miyake, Fusa

× Miyake, Fusa

WEKO 83724

en Miyake, Fusa

Search repository
Masuda, Kimiaki

× Masuda, Kimiaki

WEKO 83725

en Masuda, Kimiaki

Search repository
Nakamura, Toshio

× Nakamura, Toshio

WEKO 83726

en Nakamura, Toshio

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 solar cycle
キーワード
主題Scheme Other
主題 cosmogenic nuclide
キーワード
主題Scheme Other
主題 solar dynamo
抄録
内容記述 Radiocarbon (14C) is produced in the upper atmosphere by galactic cosmic rays, which are modulated by solar magnetic activity. Its content in tree rings is retained and provides a record of past cosmic ray intensity and solar activity. We have measured the 14C content in Japanese cedar tree rings from AD 600 to 760, a time interval that includes a grand solar minimum in the 7th century, with a resolution of 2 year. Periodicity analysis of the 14C data shows that there is a component in the frequency band of the Schwabe cycle, with a period of 12-13 years continuing throughout the minimum. This is the fourth case in which an increase in the length of the Schwabe cycle has been observed in a grand solar minimum, after the Maunder Minimum, the Spörer Minimum,and the 4th century BC Minimum. In addition to the increase in the cycle length, it was also found that short frequency components appear in preceding and the beginning of the minimum. It is possible that this short component is related to the solar dynamo.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 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
言語 ja
内容記述タイプ Other
出版者
言語 ja
出版者 名古屋大学年代測定資料研究センター
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/sumrua.24.140
ID登録タイプ JaLC
書誌情報 ja : 名古屋大学加速器質量分析計業績報告書

巻 24, p. 140-144, 発行日 2013-03
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