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对采自长白山天池火山最近一次大喷发的浮岩空降堆积物中的一棵大炭化木,自边缘至中心作了系统的~(14)C年代测定,并与高精度树轮校正曲线匹配拟会,获得大喷发的年代为AD(1215土15)a.讨论了这次大喷发对全球气候的影响,指出这次大喷发最有可能对应于GISP2格陵兰冰芯中的AD(1229±2)a的SO_4~2-峰.
A large carbonized wood from the sediment of the pumice pumice collected from the recent large eruption of Changbaishan Tianchi volcano was systematically measured from the edge to the center and matched with the high-precision tree-ring calibration curve (1215 ± 15) a. The impact of this large eruption on the global climate is discussed. It is pointed out that this large eruption is most likely to correspond to AD (1229 ± 2) in GISP2 Greenland ice core. a SO_4 ~ 2-peak.