Reconstruction of the Atlantic paleocirculation back to the Last Interglacial by a combined proxy approach from ODP Leg 172 Site 1063 sediments.

由于全球热量和碳的输送，大西洋经向翻转环流在我们星球的气候系统中扮演着关键的角色。为了估计或模拟未来的演变，重建过去的水团分布是至关重要的。深海沉积物中的231Pa230Th和εND是恢复古海洋学的有希望的指标，但两者都受到特定的限制。在以前的项目中，已经证明高累积沉积物岩芯ODP172标段1063是这两个指标应用的合适地点。因此，通过231Pa230th和εND的组合，过去的海洋环流强度将以高时间分辨率返回到最后一次间冰期(Eemian)。据推测，伊米亚时期的温度部分高于全新世。因此，关于最近的全球变暖，重建过去的海洋环流可能有助于预测未来的事态发展。

The Atlantic Meridional Overturning Circulation holds a key role in the climatic system of our planet, due to the transport of global heat and carbon. It is crucial to reconstruct the past distribution of water masses in order to estimate or model the future evolution. 231Pa/230Th and εNd from deep sea sediments are promising proxies to derive the past paleoceanography, however, both are subject to specific limitations. In preceding projects the high accumulating sediment core ODP Leg 172 Site 1063 has been proved as an appropriate location for the application of both proxies. Therefore, by a combination of 231Pa/230Th and εNd the past strength of ocean circulation will be examined in high temporal resolution back to the last Interglacial (Eemian). It is assumed, that temperatures during the Eemian were partly higher than during the Holocene. Thus, in regard to a recent global warming, the reconstruction of the past Ocean circulation may serve to anticipate future developments.