大陆科学钻探开展古气候研究进展

Progress in the study of paleoclimate change in continental scientific drilling projects

当前气候变化问题已经引起全社会的广泛关注。地质历史时期(包括第四纪和"深时")的古气候研究可为了解现代气候变化提供借鉴,大陆科学钻探成为开展此研究的重要手段。文中对大陆科学钻探开展古气候研究的进展作一综述。获取连续沉积记录是大陆科学钻探的最大优势,地质学家通过对岩心建立高分辨率年代地层框架和应用多种古气候替代性指标,重建地质历史时期不同时间尺度上的陆地古气候变化,发现并精确厘定陆地古气候-古环境快速变化事件,进而通过精细对比陆地-海洋古气候记录,揭示气候变化的过程和机制。这些研究成果将加深人类对地球气候系统的认识,并为未来气候预测提供科学依据。可以预见,大陆科学钻探将成为古气候研究的一种常用手段,在未来的古气候研究领域,特别是"深时"温室气候研究中发挥更加重要的作用。

Today climate change has caused extensive concern of the whole society.Paleoclimate change studies in geological time（including Quaternary and ＂Deep Time＂）,in which continental scientific drilling plays a significant role,provide important references to the current climate change.This paper reviews scientific progresses in the study of paleoclimate change in continental scientific drilling projects.In advantage of the continuous sedimentary records acquired by the continental scientific drilling projects, high-resolution chronostratigraphic framework is established and multiple paleoclimatic proxies are applied.With the aim to decipher the process and mechanism of climate change,progresses have been achieved on paleoclimatic reconstructions on different timescales,detailed studies on rapid climate changes,and precise correlation between marine and terrestrial paleoclimatic records.It is predictable that continental scientific drilling will be more influential in the paleoclimate studies in future,especially in deep-time greenhouse climate studies.