Climate Cycles and Events in the Plio-Pleistocene of the Yermak Plateau, Arctic Ocean: Causes and Consequences

地球特别是北半球冰期的长期气候变化与不同的轨道周期（23,000年、41,000年、100,000年）有关。到目前为止，这些旋回的高分辨率研究还局限于近似。过去30万年的北冰洋沉积物（只有少数岩心存在足够的生物物质，年龄控制有限，沉积记录极其复杂）。该项目旨在利用沉积环境知识的最新进展，并应用非回避分析方法，x射线荧光（XRF）扫描仪，对ODP站点910和911 （Yermak高原，北冰洋）进行高分辨率调查。为了充分理解和解释XRF扫描仪记录，有必要对大量选定的离散样品进行详细调查。最复杂的分析和定量方法将应用于了解无机地球化学，岩性和矿物组合，并校准相关的XRF扫描仪数据。我们的最终目标将是更好地了解沉积和古环境条件，并推导出北半球在过去3-4百万年间的气候变化。

Long-term climate changes of the Earth and in particular the Northern Hemisphere glaciation are related to the various orbital cycles (23,000, 41,000, 100,000 years). Up to now, hi resolution research of these cycles was restricted to approx. the last 300,000 years in Arctic Ocean sediments (only a few cores exist with sufficient biogenic material, restricted age control, extreme complexity of the sedimentary record). This project aims to use the latest advances in knowledge of the sedimentary environment, and apply a non-evasive analytical method, the X-ray fluorescence (XRF) scanner, for very high-resolution investigations of ODP sites 910 and 911 (Yermak Plateau, Arctic Ocean). To fully understand and interpret the XRF Scanner record the detailed investigation of a large number of selected discrete samples is necessary. The most sophisticated analysis and quantification methods will be applied to understand the inorganic geochemistry, lithology and mineral assemblage, and to calibrate the relative XRF Scanner data. Our final goal will be to better understand the sedimentary and paleoenvironmental conditions and to derive climate changes of the Northern Hemisphere through the last 3-4 million years.