The Record of Global Change in the Western Equatorial Pacific: The Last 3 Million Years

海洋生物生产力和海洋环流的变化 将使用1350个样本来研究过去的300万年 从翁东爪哇高原的两个臭氧消耗潜能点 测量将 包括：1）关键浮游生物保存和相对丰度 2）d-018用于地层总体控制 和垂直温度梯度;和3）d-C13的历史， 碳化学的变化。 特别令人感兴趣的是 这些指数在临界冰期期间的变化性质- 间冰期过渡 其他兴趣点将是 西赤道上升流/生产力的历史 太平洋，保存尖峰和突然冰之间的联系 融化，以及太平洋-大西洋不对称的历史， 的深水。 将“真正的”全球平均数 在北大西洋测量的信号和气候周期。

Variations in the biologic productivity and ocean circulation over the last 3 million years will be studied using 1350 samples taken from two ODP sites on the Ontong-Java Plateau. Measurements will include 1)preservation and relative abundances of key planktonic and benthic foraminifera; 2)d-018 for overall stratigraphic control and vertical temperature gradients; and 3) d-C13 for history of changes in carbon chemistry. Of particular interest will be the nature of the variations in these indices during critical glacial- interglacial transitions. Other points of interest will be the history of upwelling/productivity in the western equatorial Pacific, the link between preservation spikes and abrupt ice melting, and the history of Pacific-Atlantic assymetry in the age of deep water. The link will be made between "true" global average signal and climatic cycles measured in the North Atlantic.