1. A 1179-yr (417–1595 CE) tree-ring oxygen isotope chronology for northern Japan validated using the 774–775 CE radiocarbon spike.
- Author
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Sano, Masaki, Li, Zhen, Tsushima, Akane, Kimura, Katsuhiko, Nakamura, Toshio, Ohyama, Motonari, Sakamoto, Minoru, Nakatsuka, Takeshi, and Hakozaki, Masataka
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TREE-rings ,DENDROCHRONOLOGY ,VOLCANIC eruptions ,CARBON isotopes ,STATISTICAL correlation - Abstract
We present an annual-resolution, millennium-long tree-ring chronology for northern Japan. The chronology is based on 5309 measurements of tree-ring δ
18 O from 37 samples of Hiba arbor-vitae (Thujopsis dolabrata var. hondae). Although the exact geographical origin of 27 of the samples is unknown because they were extracted from excavated archaeological material, pattern matching of the tree-ring δ18 O variations was robust among all 37 samples. The floating chronology constructed using all samples was cross-dated against a previously published δ18 O chronology from central Japan, yielding a correlation coefficient of 0.26 (t = 9.0; p < 0.01), resulting in a temporal coverage of 417–1595 CE (i.e., 1179 yrs). The global14 C spike event at 774–775 CE was clearly recorded in the annual14 C data, which provides independent support for the dating of tree rings using oxygen isotopes. Furthermore, this δ18 O chronology from northern Japan was used to successfully cross-date a wood sample buried during the "Millennium Eruption" of Baitoushan, which is located on the border between China and North Korea. [ABSTRACT FROM AUTHOR]- Published
- 2024
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