Multiproxy quantification of NE Irish Ice Sheet deglaciation timing and dynamics

最后的英爱冰原（BIIS）是目前占据南极洲和格陵兰岛的巨大冰块的极好类比。因此，BIIS的重建有可能告诉我们大规模冰质量损失的未来轨迹。然而，在快速变化的气候中，我们对主要冰川（再）推进和退缩的认识存在巨大差距，这仍然阻碍了BIIS作为世界其他地方未来冰川消融的综合预测器的有效性。为了填补这些空白，该项目的目标是了解气候、海平面和与BIIS西北地区冰盖稳定性和冰界迁移相关的内部驱动因素的作用。我们将通过采用无与伦比的0.4米分辨率数字高程模型，对北爱尔兰鲜为人知的（重新）冰的进展进行全新的地貌学理解。这将为该地区提供一个新的年代学背景，使用放射性碳和宇宙成因核素定年活动，以及爱尔兰晚冰期的第一个地层框架。这种高分辨率的多代理方法将使我们能够确定日期并直接比较爱尔兰和英国的冰川消融率，为改进BIIS模型提供关于冰块衰退时间和驱动因素的新见解。

The last British-Irish Ice Sheet (BIIS) is an excellent analogue for the vast ice masses currently occupying Antarctica and Greenland. Reconstructions of the BIIS therefore have the potential to inform us of future trajectories of large-scale ice mass loss. However, large gaps in our knowledge of major ice (re)advance and retreat in a rapidly shifting climate still hinder the efficacy of the BIIS as a comprehensive predictor of future deglaciation elsewhere in the world. To fill these gaps, the ambition of this project is to understand the role of climatic, sea-level, and internal drivers related to ice sheet stability and ice divide migration in the north-western sector of the BIIS. We will develop a brand new geomorphological understanding of little understood (re)advances of ice in Northern Ireland by employing unparalleled 0.4 m resolution digital elevation models. This will contextualise a new chronology for this area using radiocarbon and cosmogenic nuclide dating campaigns, and the first tephrostratigraphic framework for the Late Glacial in Ireland. This high-resolution multiproxy approach will allow us to date and directly compare rates of deglaciation across Ireland and Britain, providing new insights into the timing and drivers of ice-mass recession critical for improving BIIS models.