Reconstruction of atmospheric radiocarbon concentration of last millennium from East Asian tree rings

• Project/Area Number: 25282075
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Cultural assets study and museology
• Research Institution: National Museum of Japanese History
• Principal Investigator: Sakamoto Minoru 国立歴史民俗博物館, 大学共同利用機関等の部局等, 教授 (60270401)
• Co-Investigator(Kenkyū-buntansha): NAKATSUKA Takeshi 総合地球環境学研究所, 研究部, 教授 (60242880)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000); Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2013: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
• Keywords: 炭素14年代法 / 酸素同位体 / 樹木年輪 / 較正曲線 / 東アジア / セルロース / 年輪年代法 / 地域効果 / 炭素14年代 / 年輪年代

Outline of Final Research Achievements

Sequential radiocarbon dating of Japanese tree ring which age was determined by dendrochronology and oxygen isotope ratio of cellulose was carried out identity the atmospheric 14C anomalies of Japanese archipelago. Comparing to IntCal13, little anomalies were found during 10c to 12c and 15c. On the other hand, turbulence was observed after 17c. These behavior coincide with wood members of early-modern building which agree well with SHCal13 rather than when applying 14C wiggle-matching method. However, anomaly observed in the latter of 17c does not coincide with previous study. Suess effect should be concerned after 18c.

Research Products

• [Journal Article] AMS-14C法における旧土肥家住宅の年代－試料汚染とその対応－ (2015)
  • Author(s): 坂本稔・中尾七重・今村峯雄
  • Journal Title: 国立歴史民俗博物館研究報告 Volume: 196 Pages: 149-162
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 日本産樹木年輪の炭素14年代測定 (2014)
  • Author(s): 坂本稔
  • Journal Title: 号外地球 Volume: 63 Pages: 114-120
• [Presentation] Fine structure and reproducibility of radiocarbon ages of early-modern Japanese tree rings. (2016)
  • Author(s): Minoru SAKAMOTO, Nanae NAKAO, Takeshi NAKATSUKA
  • Organizer: 第8回放射性炭素と考古学国際シンポジウム
  • Place of Presentation: Royal College of Surgeons, エジンバラ
  • Year and Date: 2016-06-27
  • Int'l Joint Research
• [Presentation] 平等院阿弥陀堂遺構材の調査1－年代測定について－ (2016)
  • Author(s): 坂本稔・光谷拓実・中塚武・横山操・田中正流・鳴海祥博・太田亜希・神居文彰
  • Organizer: 日本文化財科学会第33回大会
  • Place of Presentation: 奈良大学，奈良
  • Year and Date: 2016-06-04
• [Presentation] Radiocarbon measurement of middle to early-modern Japanese tree rings associated with 14C wiggle-matching of members of wooden buildings. (2015)
  • Author(s): Minoru SAKAMOTO, Nanae NAKAO, Takeshi NAKATSUKA
  • Organizer: 第22回国際放射性炭素会議
  • Place of Presentation: King Fahd Palace Hotel，ダカール
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] AMS Radiocarbon dating of Main Hall of Hojobo Hinata Yakushi by 14C-wiggle matching in relation to calibration curves. (2015)
  • Author(s): Minoru SAKAMOTO, Nanae NAKAO
  • Organizer: 第6回東アジア加速器質量分析シンポジウム
  • Place of Presentation: 国立台湾大学，台北
  • Year and Date: 2015-10-04
  • Int'l Joint Research
• [Presentation] 近世日本産樹木年輪の炭素14年代－較正曲線からの特徴的な乖離 (2015)
  • Author(s): 坂本稔・中尾七重・中塚武
  • Organizer: 日本文化財科学会第32回大会
  • Place of Presentation: 東京学芸大学，東京
  • Year and Date: 2015-07-11
• [Presentation] AMS radiocarbon dating of early modern wooden buildings by wiggle-matching. (2014)
  • Author(s): Minoru SAKAMOTO, Nanae NAKAO, Mineo IMAMURA
  • Organizer: AMS-13
  • Place of Presentation: Aix en Provence, France
  • Year and Date: 2014-08-24 – 2014-08-29
• [Presentation] 日本産樹木年輪のAMS-炭素14年代測定による較正曲線の作成 (2014)
  • Author(s): 坂本稔・尾嵜大真・今村峯雄
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] Radiocarbon dating of Japanese tree rings from 4c to 7c AD in comparison to archaeological chronology (2014)
  • Author(s): Minoru Sakamoto, Takumi Mitsutani, Takeshi Nakatsuka, Hiromasa, Ozaki
  • Organizer: 9th International Conference on Dendrochronology
  • Place of Presentation: Melbourne Convention and Exhibition Centre, Australia
• [Presentation] 14C wiggle-matching of buried wood of Baekdu Mountain by B-Tm eruption – possible offsets compared to IntCal (2013)
  • Author(s): Minoru Sakamoto, Takumi Mitsutani, Mineo Imamura
  • Organizer: 7th International Symposium “14C & archaeology”
  • Place of Presentation: Sint-Pietersabdij, Ghent, Belgium
• [Presentation] 実年代の定まった日本産樹木の高精度炭素14年代測定－紀元前2世紀から6世紀まで (2013)
  • Author(s): 坂本稔，光谷拓実，中塚武
  • Organizer: 日本文化財科学会30回大会
  • Place of Presentation: 弘前大学
• [Presentation] Precise AMS radiocarbon dating of Japanese tree rings from 4th to 7th century AD (2013)
  • Author(s): Minoru Sakamoto
  • Organizer: EA-AMS5
  • Place of Presentation: Korean Institute of Geoscience and Mineral Resources, Daejeon, Korea
• [Book] 築何年？炭素で調べる古建築の年代研究 (2015)
  • Author(s): 国立歴史民俗博物館・坂本稔・中尾七重
  • Total Pages: 188
  • Publisher: 吉川弘文館