太湖近8000年沉积环境突变气候事件分析研究

太湖近8000年来沉积环境演变经历多次快速的气候突变事件,其中体现较为明显的几次气候寒冷事件分别在1900、3000、4400、7400calyrBP左右,而在500、5800、6200calyrBP左右也有寒冷气候事件的响应。这些周期性的气候震荡与北大西洋气候、亚洲西南季风变化以及全球其它地区气候变化有着非常好的对比性。本文认为突变事件在全球范围内有着很好的响应,可能是由全球性气候因子的周期性变化导致,非区域性气候因素变化引起。

Study of Mutation Climate Events During the Last 8,000 Years in Taihu Lake Links to Asian Monsoon and North Atlantic Climate

There were many rapid climate mutation events during the last 8,000 years in Taihu Lake.There were the more significant several cold events in 1900,3000,4400,7400 cal yr BP,respectively,while there are also cold climate events around 500,5800,6200 cal yr BP.These periodic climatic shocks have a very good contrast with Asia southwest monsoon,North Atlantic climate and the results of climate change research in the rest of the world.This paper argues that this mutation events has a good synchronization response in the range of world,that may be due to cyclical changes in global climate factor,rather than changes in regional climate factors.