Record of Drought and Flood Series by Tree-Ring Data in the Middle Section of Qilian Mountain Since 904 A. D.

祁连山中部公元904年以来树木年轮记录的旱涝变化。

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Yet vast floods have also been documented, both through tree-ring data and more modern historical records. Marcia K.

不过，通过树木的年轮和更多的现代历史记录，人们还是可以查到一些大洪水爆发的记录。

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Ulf Buentgen and his team of researchers at the Swiss Federal Institute for Forest, Snow and Landscape Research collected tree-ring data from ancient wood found in medieval castles and Roman ruins.

来自瑞士联邦学院的Ulf Buentgen教授和他的研究队伍从中世纪古堡和罗马城废墟中搜寻古代的木头，企图收集关于树木年轮的信息。

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In North America, Laki has been blamed for the starvation of Inuit populations from severe cold in northwestern Alaska, based on Inuit oral history as well as tree-ring density data investigated by Gordon Jacoby and others, who estimated that conditions were about 4 degrees Celsius colder than the mean.

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