REU: Quantitative Technique for Extracting New Paleoenvironmental Information from Planktonic ForaminiferalCarbon Isotope Data

在浮游有孔虫培养实验的基础上，建立了两个新的模型，使有孔虫方解石13c和18o的生理和环境影响得以区分；有孔虫化石中水温季节变化和海水总CO2 13c的新古环境信息成为可能。该模式利用碳同位素记录结合180度信号重建了古海洋浅层表层和浅层底部的季节温度变化。定量碳同位素模型提供了一种过滤13C记录中“重要影响”的技术，以重建环境CO2的13C。本研究的目的是通过活虫的培养和生理实验，将EZ和QC模型应用于新的浮游动物物种。表层海洋的瞬变和长期变化对古气候变化影响的新古海洋学信息。

Two newly developed models, based on culturing experiments with planktonic foraminifera, make it possible to: a) differentiate physiological from environmental influences on the 13c and 18o of foraminiferal calcite and b) extract new paleoenvironmental information about seasonal changes in water temperature and the 13c of seawater total CO2 from fossil foraminifera. The Euphotic Zone model uses the carbon isotope record in conjunction with 18o signal to reconstruct seasonal temperature ranges in surface waters and at the base of paleoceanic euphotic zones. The Quantitative Carbon isotopemodel provides a technique for filtering out "vital effects" inthe 13C record to reconstruct the 13C of environmental CO2. The objective of the research is to expand the application of the EZ and QC models to new planktonic foranimiferal species through culturing and physiological experiments with living froaminifers. The new paleoceanographic information about surface ocean insight into effects of transient and long-term changes in the euphotic zone on paleoclimatic change.