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

伊米亚间冰期是理解当前间冰期气候系统自然运行的最新类比。然而，由于在比较跨越这一间隔的不同自然档案中的古记录时出现了固有的困难，人们对整个冰川周期和重返冰化地球的性质和模式知之甚少。事实上，这一时期的特点似乎是气候的突然而快速的振荡。然而，由于时间上的问题，目前还无法了解推动这些快速事件的气候动力学和强迫机制。该项目将采用一种强大的方法，利用火山灰层来同步和直接比较冰芯和海洋序列。将从一个新的格陵兰冰芯建立一个火山事件框架，它将作为年表模型的基础，并将使人们能够前所未有地深入了解公元前140,000-70,000年间快速气候事件期间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.