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

这项研究项目的主题是研究太平洋高纬度海洋过去对全球变暖的作用。重建的古海洋数据可作为未来全球变暖数值预报的参考档案数据。(1)基于海洋同位素地层学、年代学和发光测年的白令海深海沉积物岩心年龄模型；(2)太平洋高纬度海洋(白令海)海冰和表层生产力等环境指标在过去全球变暖过程中的快速反应，对气候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.