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

北冰洋叶尔马克高原上皮里奥-更新世的气候循环和事件：原因和后果

• 批准号: 49004616
• 负责人: Professor Dr. Hans-Jürgen Brumsack
• 金额: --
• 依托单位: Alfred-Wegener-Institut (AWI) Helmholtz-Zentrum für Polar- und Meeresforschung
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/49004616?language=en
• 关键词: Climate; Cycles; Events; Plio; Pleistocene

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.

地球的长期气候变化，特别是北方的冰川作用与各种轨道周期（23，000年、41，000年、100，000年）有关。到目前为止，这些周期的高分辨率研究仅限于约。在北冰洋沉积物中，过去30万年的沉积物（只有少数几个岩心具有足够的生物源材料，年龄控制有限，沉积记录极其复杂）。该项目的目的是利用沉积环境知识方面的最新进展，并应用一种非回避分析方法，即X射线荧光扫描仪，对臭氧消耗潜能值910和911场址（北冰洋耶尔马克高原）进行高分辨率调查。为了充分理解和解释XRF扫描仪的记录，需要对大量选定的离散样品进行详细研究。将采用最先进的分析和定量方法来了解无机地球化学、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，并得出北方半球在过去300 - 400万年的气候变化。