SGER: Extracting Holocene Sea Surface Temperature, Ventilation, and Productivity Records from Antarctic Continental Margin Sediments: Novel Geochemical Insights from Palmer Deep

这项小型探索性研究资助支持使用先进的地球化学技术从帕尔默深的沉积物中获取古海洋学信息，帕尔默深是南极半岛大陆架上的一个冰川过深盆地，位于安弗斯岛西南约20公里处。该项目的目标是确定全新世南大洋的特征，并了解其与全球气候变化和最近南极冰川的联系。这些沉积物缺乏通常用于此类研究的材料，pi将使用新的方法，包括使用放射性同位素方法测定14C和U/Th的沉积物年代；用各种痕量金属测定海底氧化还原态以及使用沉积脂质法TEX86估算海面温度。这项工作的更广泛的影响包括支持博士后和本科生的研究，提高社会对全球气候变化的理解。

This Small Grant for Exploratory Research supports the use of advanced geochemical techniques to obtain paleoceanographic information from sediments from the Palmer Deep, a glacially overdeepened basin on the Antarctic Peninsula shelf, ~20 km southwest of Anvers Island. The projects goals are to determine characteristics of the Southern Ocean in the Holocene and understand its link to global climate change and recent Antarctic glaciations. These sediments lack materials typically used for such studies, and the PIs will use novel approaches that include sediment dating using radioisotope methods for 14C and U/Th; determination of ocean bottom redox states using various trace metals; and estimations of sea surface temperature using TEX86, a sedimentary lipid method.The broader impacts of this work include support of postdoctoral and undergraduate student research and improving societys understanding of global climate change.