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令斯豪森海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，观测到的模式受到海洋学、气候和冰川条件的极大影响。关于这些模式的现今分布的数据将提供关于微生境和地表沉积物与底栖有孔虫之间的地球化学联系的新信息。将利用在现代环境中观察到的动物-环境关联来制定一个相互作用模型，利用有孔虫生物相作为海洋学对气候条件变化反应的指标。该模型将用于通过观察大尺度有孔虫组合变化和小尺度（可能是季节性的）分层来推断下核沉积物中的古海洋学和古气候条件。底栖无脊椎动物反映了大气、水圈和冰冻圈之间的联系，并被广泛用于研究古环境问题。底栖有孔虫对海底化学和物理条件的敏感性已经在文献中得到了广泛的证明，并且该群体的地质寿命记录良好，使其成为岩心材料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.