Synchronising marine and ice-core records using tephrochronology (SMART)

Eemian间冰期为理解当前间冰期气候系统的自然运行提供了最新的模拟。然而，由于在比较跨越这一区间的不同自然档案的古记录时所产生的固有困难，人们对整个消冰周期和回到冰川地球的性质和模式了解甚少。事实上，这一时期的特征似乎是突然而迅速的气候波动。然而，由于时间顺序的问题，目前还无法理解驱动这些快速事件的气候动力学和强迫机制。这个项目将采用一种强大的方法，用火山灰层来同步和直接比较冰芯和海洋序列。火山事件的框架将从一个新的格陵兰冰芯中建立起来，这将支持时间模型，并将使人们能够前所未有地了解在14万至7万年前的快速气候事件中大气和海洋系统的不同反应。

The Eemian interglacial serves as the most recent analogue for understanding the natural operation of the climate system during the current interglacial. The nature and pattern of the full deglaciation cycle and the return into a glaciated Earth are, however, poorly understood due to the inherent difficulties that arise in the comparison of palaeorecords from different natural archives that span this interval. Indeed, it seems that abrupt and rapid climatic oscillations characterised this period. Yet, due to the chronological problems, an understanding of the climatic dynamics and forcing mechanisms driving these rapid events is currently unattainable. This project will employ a powerful approach in which volcanic ash layers are used to synchronise and directly compare ice-core and marine sequences. A framework of volcanic events will be established from a new Greenland ice-core that will underpin chronological models and will enable an unprecedented insight into the differing response of the atmospheric and marine systems during rapid climatic events between 140,000-70,000 years BP.