Collaborative Research: Paleoenvironmental Time Series from Postglacial Lake Basins on Kola Peninsula, Russia

摘要ATM-9600126 作者：Steven L. 俄亥俄州州立大学 合作研究：古环境时间序列 俄罗斯科拉半岛冰后期湖盆 人们对冰消期和全新世的巨大变化知之甚少 北大西洋地区的气候传播到欧亚大陆 北极 科拉半岛的湖泊和河口记录， 邻近北角海流，最东端的分支， 北大西洋洋流，提供档案，以评估冰后期和 全新世湖泊、植被和林木线的变化， 推断大气和海洋环流的变化。 现存 来自北方科拉半岛的岩芯提供了河口和湖泊 至少跨越过去12，000年的记录。初步 分析表明，这些沉积物富含生物 仍然是确保可靠的放射性碳年代学的理想选择， 决定环境的变化。 该PALE/ARCSS奖项支持 从冻土带占主导地位的北方海岸的一个样带上取湖芯 到科拉半岛的森林中心 这项研究将利用一系列古生态学技术，如花粉、硅藻、大型化石和沉积物分析，并辅以气孔、摇蚊和纤维素稳定同位素的最新进展 分析。 加强对古环境的解释， 核心，现代沉积物样本将从湖泊收集， 统计校准花粉，气孔，硅藻和摇蚊 记录当前的气候、土壤和植被状况。 这项研究将提供新的晚冰期和全新世记录，从俄罗斯西部北极，目前在全球空白 古气候时间序列 这项合作研究是与Glen M博士合作的。麦克唐纳在加州大学，洛杉矶（ATM-9632926）。

Abstract ATM-9600126 Forman, Steven L. Ohio State University Title: Collaborative Research: Paleoenvironmental Time Series from Postglacial Lake Basins on Kola Peninsula, Russia It is poorly known how dramatic changes in deglacial and Holocene climates in the North Atlantic region propagated into the Eurasian arctic. Lacustrine and estuarine records from the Kola Peninsula, adjacent to the North Cape Current, the eastern-most limb of the North Atlantic current, provide archives to assess postglacial and Holocene variations in lakes, vegetation and tree line and inferred changes in atmospheric and oceanic circulation. Extant cores from northern Kola Peninsula provide estuarine and lacustrine records spanning at least the last 12,000 yrs. Preliminary analyses demonstrate that these sediments are rich in biologic remains, ideal for securing a reliable radiocarbon chronology and determining environmental changes. This PALE/ARCSS award supports lake coring on a transect from the tundra-dominated northern coast to the forested center of Kola Peninsula. This research will utilize an array of paleoecological techniques such as pollen, diatom, macrofossil and sediment analyses, augmented by recent advances in stomate, chironomid and cellulose stable isotope analyses. To strengthen the paleoenvironmental interpretations of the cores, modern sediment samples will be collected from lakes to statistically calibrate pollen, stomate, diatom, and chironomid records with present climatic, edaphic and vegetation conditions. The research will provide new late glacial and Holocene records from the western Russian arctic, currently a void in global paleoclimatic time series. The collaborative research is with Dr. Glen M. MacDonald at the University of California, Los Angeles (ATM-9632926).