Nd同位素方法应用于示踪古洋流的研究进展

大洋环流在调节全球水热分配方面起着举足轻重的作用,对全球气候变化有着重要影响。为了更好地了解未来的气候变化模式,掌握古洋流变化与气候冷暖交替耦合关系的机理成为当务之急。目前,海水Nd同位素是追踪洋流演化方式的有效指标,获得了越来越多的关注。通过从海洋环境Nd同位素的相关特性以及研究材料与方法方面来阐述Nd同位素应用于示踪古洋流研究的可行性以及最新的进展,并配合实例进行说明。

Research Advance in Tracing Evolution Pattern of Paleo-Currents by Using Nd isotpic Composition

Oceanic current plays a key role in controlling the redistribution of global heat and moisture,which may have effect on climatic change finally.It's urgent to understand the mechanism of ocean current evolution,which may be related to alternation between warm and cold weather,and to better predict the trend of present climatic change.It has been confirmed that the Nd isotopic composition is an effective proxy for studying ocean current evolution,and has attracted many attentions.This paper interprets why the Nd isotopic composition could be used as a proxy to reconstruct paleocirculation through illustrating the characteristic of Nd.Besides,some materials enriched in Nd and methods for studying will be explained in detail.