Quaternary Climatic Record from the Antarctic Peninsula Region, Antarctica

这是一项为期两年的研究，旨在通过对阿蒙森海和别林豪森海的沉积物岩心的检查来推断南极半岛地区的环境历史。早期对底栖有孔虫分布、沉积物分布和水柱剖面的分析强烈表明，观察到的模式受到海洋、气候和冰川条件的很大影响。关于这些模式今天分布的数据将提供关于表层沉积物和底栖有孔虫之间的微生境和地球化学联系的新信息。在现代环境中观察到的动物-环境组合将用有孔虫生物相作为海洋学对不断变化的气候条件作出反应的指标来制定一种互动模式。该模型将用于通过观察大规模有孔虫组合变化和小规模(可能是季节性的)纹层来推断岩心下部沉积物中的古海洋和古气候条件。底栖无脊椎动物反映了大气层、水圈和冰冻圈之间的联系，并已被广泛用于研究古环境问题。底栖有孔虫对底层水的化学和物理条件的敏感性在文献中得到了广泛的证明，该组有充分记录的地质寿命使其成为岩心物质古气候分析的宝贵工具。

This is a two-year study to infer the environmental history of the antarctic peninsula region from an examination of sediment cores from the Amundsen and Bellingshausen Seas. Earlier analyses of benthic foraminifera distribution, sediment distribution, and water column profiles strongly suggested that the observed patterns are greatly influenced by oceanographic, climatic, and glacial conditions. Data on the present-day distribution of these patterns will provide new information on the microhabitat and geochemical associations between surface sediments and benthic foraminifera. The faunal-environmental associations observed in the modern setting will be used to formulate an interactive model using foraminiferal biofacies as indicators of oceanographic response to changing climatic conditions. This model will be used to infer paleoceanographic and paleoclimatic conditions in downcore sediments by observing both large-scale foraminiferal assemblage changes, and small-scale (possibly seasonal) laminations. Benthic invertebrates reflect the links between the atmosphere, hydrosphere, and cryosphere, and have been used extensively to investigate paleoenvironmental problems. The sensitivity of benthic foraminifera to both chemical and physical conditions of bottom waters has been extensively demonstrated in the literature, and the group's well documented geological longevity has made it a valuable tool for the paleoclimatic analysis of core material.