中国东北地区位于东亚季风区北缘，同时受到西风环流的影响。该区域的气候变化在敏感响应全球信号的同时，区域性特征明显，是研究季风和西风系统对区域气候变化影响的关键地区。岫岩陨石坑地处东北地区，坑内上部近百米的湖泊和泥炭沉积物很可能可以为该区域的气候变化提供长时间尺度、高分辨率的气候记录。因此，本项目拟在岫岩陨石坑获取近百米的湖泊和泥炭沉积物岩芯钻孔，并在14C和光释光测年的基础上，利用火山灰年代学和天文轨道调谐的方法为沉积序列建立起精确的年代框架，为中国东北地区长时间尺度的气候环境演化研究提供材料，为东北亚地区提供可供对比的火山灰等时面序列，进一步限定岫岩陨石坑的撞击年龄。

Northeast China is located on the northern edge of the East Asian monsoon region, which is also affected by the westerly circulation. The climate change in this region is sensitive to the global climate change, while the regional characteristics are obvious. It is the key area to study the impact of monsoon and westerly systems on regional climate change. The Xiuyan crater is located in the northeastern China. Lakes and peat deposits in the upper part of the crater are likely to provide long-term, high-resolution climate records for climate change in study area. Therefore, the project intends to obtain nearly 100 meters of lake and peat sediment core drilling in Xiuyan crater, and establish a precise chronological framework based on 14C and optical stimulated luminescence (OSL) dating, using tephrochronology and astronomical orbit tuning for the sedimentary sequence, to provide materials for the long-term climatic environment evolution research in northeast China, to provide comparative volcanic ash time series for northeast Asia, and further limit the impact age of the Xiuyan crater.