Marine Isotope Stage 11 in the eastern Mediterranean Sea: Nearest analog to the present day?

地中海东部海洋同位素第 11 阶段：与当今最接近的类似物？

• 批准号: 33648005
• 负责人: Professor Dr. Michal Kucera, Ph.D.
• 金额: --
• 依托单位: Fachbereich III: Geowissenschaften
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/33648005?language=en
• 关键词: Marine; Isotope; Stage; 11; eastern

Marine isotopic Stage 11 (MIS11), some 400,000 years ago, provides the closest analog to the Holocene in terms of the configuration of the Earth¿s orbit around the Sun and the resulting strength and variability of solar insolation. Understanding the climate of MIS11 will thus aid in assessment of human impact on global climate and of the future of the present warm period. The Mediterranean acts as an amplifier of climate signals, responding to forcing from both the North, via the North Atlantic Oscillation and from the South, through shifts of the Intertropical Convergence Zone. This unique potential of the region to record different facets of MIS11 climate has never been explored. In this project, we will generate the first high-resolution multi-proxy records from eastern Mediterranean ODP and Meteor cores, reconstructing the hydrography, climate and ecosystems of the region across the MIS11. We specifically aim to study the pattern of climate fluctuation during MIS11 as an analog of what might have been expected during the Holocene (MIS1) without human overprint. We will also determine when and how this Holocene-like interglacial ended and whether the plunge into a new ice age could have been predicted from precursor signals or events. Our results will help in evaluating scenarios of future climate change in this densely populated region, with obvious benefits to society in Mediterranean countries.

海洋同位素第11阶段（MIS11），大约40万年前，提供了最接近全新世的地球绕太阳轨道的配置以及由此产生的太阳日射强度和变化。因此，了解MIS11的气候将有助于评估人类对全球气候的影响以及目前温暖期的未来。地中海充当气候信号的放大器，通过北大西洋涛动和热带辐合带的移动对来自北方的强迫作出反应。该地区记录MIS11气候不同方面的独特潜力从未被探索过。在这个项目中，我们将从东地中海ODP和Meteor核心生成第一个高分辨率的多代理记录，重建整个MIS11地区的水文，气候和生态系统。我们的具体目标是研究MIS11期间的气候波动模式，作为在没有人类叠加的情况下可能预期的全新世（MIS1）的模拟。我们还将确定这类全新世间冰期何时以及如何结束，以及是否可以从前兆信号或事件中预测到新的冰河时代。我们的研究结果将有助于评估这个人口稠密地区未来气候变化的情景，对地中海国家的社会有明显的好处。