2024-03-29T05:59:54Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00011651
2023-11-13T06:05:50Z
879:1183:1184:1237
太陽活動と<14>^C濃度変動
Radiocarbon and the solar activity in the past
増田, 公明
Masuda, Kimiaki
加藤, 大岳
Kato, Masataka
豊泉, 裕章
Toyoizumi, Hiroaki
村木, 綏
Muraki, Yasushi
Arslanov, Kh.A.
北川, 浩之
Kitagawa, Hiroyuki
松本, 英二
Matsumoto, Eiji
open access
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
本文データは学協会の許諾に基づきCiNiiから複製したものである
Production rate of radiocarbon ^<14>C in upper atmosphere depends on the solar activity through its modulation effect on the intensity of galactic cosmic ray on the earth. Tree rings record radiocarbon contents in the past because they take atmospheric carbon dioxide including radiocarbon by photosynthesis year by year. We are investigating radiocarbon contents in Yaku cedar to understand the variability of the solar activity in the last millennium and also the relation between the solar activity and the global climate change. Our recent measurement of ^<14>C contents in tree ring sampls of the Yaku cedar from the Spoerer minimum shows a large dip in the period between 1470 and 1550 AD while the data for the period between 1410 and 1470 AD are rather constant. The reason for this large varuation of ^<14>C contents is not known at present. Further measurements are necessary.
第13回名古屋大学タンデトロン加速器質量分析計シンポジウム(平成12 (2000)年度)報告 名古屋大学タンデトロン加速器質量分析計第2号機の研究成果と利用計画
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
2001-03
jpn
departmental bulletin paper
VoR
https://doi.org/10.18999/sumrua.12.125
http://hdl.handle.net/2237/13524
https://nagoya.repo.nii.ac.jp/records/11651
10.18999/sumrua.12.125
http://ci.nii.ac.jp/naid/110000475682/
名古屋大学加速器質量分析計業績報告書
12
125
133
https://nagoya.repo.nii.ac.jp/record/11651/files/KJ00000187397.pdf
application/pdf
605.2 kB
2018-02-20