2016 Fiscal Year Final Research Report
Advancement of the new dendrochronological method using oxygen isotope ratios
| Project/Area Number |
26244049
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Archaeology
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| Research Institution | Research Institute for Humanity and Nature |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
木村 勝彦 福島大学, 共生システム理工学類, 教授 (70292448)
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| Research Collaborator |
MITSUTANI Takumi
SANO Masaki
TSUSHIMA Akane
XU Chenxi
HAKOZAKI Masataka
SHO Kenjiro
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 年輪年代法 / 酸素同位体比 / 樹木年輪 / セルロース / 日本列島 / 考古遺跡 / 水素同位体比 |
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| Outline of Final Research Achievements |
Oxygen isotope ratios of tree-ring cellulose show highly correlated inter-annual variations between all tree individuals within a wide area belonging to a common climate condition irrespective of tree species reflecting variations in summer precipitation. To promote archaeological applications of “oxygen isotope dendrochronology” utilizing the oxygen isotope ratio as the dendrochronological parameter instead of tree ring width, we have archived following subjects. (1) Spatial and temporal extension of chronologies of cellulose oxygen isotope ratio all over Japan during last three thousands years and improvement of their accuracy, (2) Analyses of intra-ring (seasonal) variations in cellulose oxygen isotope ratio toward applying to small ring number samples, (3) Development of new cellulose extraction methods applicable to highly degraded excavated woods, (4) Dating of many wood samples excavated from many archaeological remains using advanced chronologies and analytical methods.
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| Free Research Field |
古気候学、同位体地球化学
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