DANGER DML - Deciphering the evolution of an East ANtarctic drainage system over the last Glacial cycle in westERn Dronning Maud Land

对南极冰盖行为的了解对于评估极地冰盖在气候系统中的作用以及在未来气候变暖中限制海平面上升的全球影响至关重要。对于评估南极东部冰盖未来的潜在行为，关键是记录它在上一个冰川周期(约0-115 000年前)中是如何变化的，并确定易受这些变化影响的地区。然而，目前还缺乏能够真实模拟东南极冰盖演化的合适观测数据和模型。这一缺陷将在危险DML中得到解决。该项目的总体目标是更好地了解东南极冰盖的一个主要部分如何对上一次冰川周期中的冰盖变化作出反应，方法是应用一种新的冰内层结构分析方法来重建过去的冰流模式。这为研究Dronning Maud陆地(Jutulstraumen及其邻近集水区)一个主要流域在上一个冰期周期，特别是从末次冰盛期到全新世的过渡提供了一种新的方法。

An understanding of Antarctic ice-sheet behaviour is critical for evaluating the role of the polar ice caps in the climate system and for constraining the global impact of sea-level rise in a future warming climate. Critical for assessing the potential future behaviour of the East Antarctic Ice Sheet is to document how it changed over the last glacial cycle (~ 0 – 115 thousand years ago) and to identify areas that were vulnerable to these changes. However, there is a lack of suitable observations and models that can realistically simulate East Antarctica's ice-sheet evolution. This deficiency will be addressed in DANGER DML. The overall goal of the project is to better understand how a major sector of the East Antarctic Ice Sheet reacted to ice-sheet changes during the last glacial cycle by applying a novel structural analysis method for internal layers in the ice to reconstruct ice-flow patterns of the past. This enables a new way to investigate the past ice-dynamic behaviour of a major drainage basin in Dronning Maud Land (Jutulstraumen and its neighboring catchments) over the last glacial cycle and in particular the transition from the Last Glacial Maximum to the Holocene.