Paleooceanographic data archive of global warming obtained by deep marine sediment from high latitude Pacific ocean

本研究项目的主题是研究太平洋高纬度海洋在过去对全球变暖的作用。重建的古海洋资料可作为未来全球变暖数值预测的参考档案资料。本文的研究结果总结如下：(1)基于“综合海洋钻探计划”323考察队收集的白令海深海沉积物岩心的海洋同位素地层学、沉积年代学和发光定年的珍贵年龄模型；(2)太平洋高纬度海域（白令海）的海冰和海洋表面生产力等环境指标在过去全球变暖过程中反应迅速，对变冷具有正反馈作用。

Subject of this research project is to study how Pacific high latitude ocean acts on global warming in the past. The reconstructed paleoceanographic data can be reference archive data foe numerical prediction of the future global warming. The results of this research are summarized as the followings; (1) precious age model based on marine isotopic stratigraphy, tephrachronology, and luminescence dating for deep sea sediment cores from the Bering sea collected by expedition 323 of the Integrated Ocean Drilling Program, (2)environmental proxies such as sea-ice and marine surface productivity in the Pacific high latitude ocean (Bering sea) reacts rapidly during the past global warming and has positive feedback effect for the cooling.