Correlation and Chronology of The Vostok Ice-Core Record

该提案要求支持以下研究：(1)为南极东部冰芯中包含的气候记录制定准确的年表，包括即将由C. Lorius和他的同事发表的二氧化碳记录；(2)将Vostok记录与深海岩心气候记录进行比较。这项工作将在格勒诺布尔与克劳德·洛留斯及其同事密切合作下进行。鉴于准确的年表，沃斯托克记录的长度和质量为了解二氧化碳和气候变化过程的动力学提供了前所未有的机会。通过交叉关联沃斯托克号和深海记录，本文提出的研究将确定沃斯托克号大气变化之间的一致性和相位；海洋温度、环流和碳收支的变化；以及全球冰量的变化。这项提议的工作有望在轨道时间尺度（几万到几十万年）上把两个最有价值的气候变化记录联系起来——冰芯和海洋沉积物芯。这种时间相关性将使PI能够从大气化学、海洋环流和大陆冰的体积等方面调查气候变化的详细性质。沃斯托克冰芯因其极长的长度和极好的分辨率而具有特殊的重要性。

This proposal requests support for research designed (1) to develop an accurate chronology for the climatic records contained in the Vostok East Antarctic ice-core, including the carbon dioxide record soon to be published by C. Lorius and his colleagues; and (2) to compare the Vostok records with climate records obtained from deep-sea cores. The work will be carried out in close cooperation with Claude Lorius and his colleagues at Grenoble. Given an accurate chronology, the length and quality of the Vostok record provide an unprecedented opportunity to understand the dynamics of processes which change carbon dioxide and climate. By cross-correlating the Vostok and deep-sea records, investigations proposed here will establish what the coherencies and phases are between: variations in the atmosphere at Vostok; variations in the temperature, circulation, and carbon budget of the ocean; and variations in volume of global ice. The proposed work promises to link the two most valuable records of climate change on orbital time scales (tens to hundreds of thousands of years) - ice cores and marine sediment cores. This temporal correlation will allow the PI to investigate the detailed nature of climate change in terms of atmospheric chemistry, oceanic circulation, and volume of continental ice. The Vostok ice core is of special importance because of its great length and excellent resolution.