长江三角洲南翼 PJ孔揭示的全新世突变气候事件分析研究

全新世存在周期性气候突变事件已被多项研究证实，但有关于这些突变气候事件的驱动因子一直存在争议。本项研究通过对长江三角洲南翼PJ钻孔沉积物研究，反演区域全新世期间多次气候突变事件，几次明显的突变事件在500，1900，2900，3800，4500，5800，6800，7800，8500 cal yr BP左右，这些突变气候事件与全球其它地区的研究成果有很好的对比性。本文认为这些突变气候事件在全球范围内都有明显表现，可能是由于全球性气候因子的周期性变化所致，而非局地气候因子引起。

Study of Mutation Climate Events of PJ Core in the South Wing of the Yangtze River Delta in Holocene

There are periodic mutation climate change events in Holocene which has been confirmed by a number of studies . But there has been controversy about the driving factors of mutations climate event .Depending on the study of PJ drilling sediments in southern wing of the Yangtze River Delta, we try to rebuild several times mutation climate change events during the Holocene. There are several significant mutation events around the 500, 1900, 2900, 3800, 4500, 5800, 6800, 7800, 8500 cal yr BP that have a good contrast with other research results of the world .This paper considers that these mutation climate change events are u-niversal in the world which may be due to cyclical changes in global climate factor, rather than caused by local climatic factors.