Reconstruction of the Late Pleistocene and Holocene environmental history of East and Northeast Greenland by a multidisciplinary study of lake sediments

计划中的项目是与阿尔弗雷德·韦格纳研究所（德国）、丹麦和格陵兰地质调查局（GEUS，丹麦）、隆德大学（瑞典）和乌得勒支大学（荷兰）开展的国际合作的一部分。该国际项目的目标是详细重建格陵兰东部和东北部晚第四纪冰川历史和冰后期气候和环境变化。为此目的，在2003年的一次考察中，从外海岸两个岛屿的湖泊、土壤和地貌单位收集了样本材料，根据以前的研究，这些岛屿在末次盛冰期期间部分没有冰。莱比锡大学对该项目的贡献主要集中在对恢复的湖泊沉积物序列进行年代学、沉积学和地球化学研究，并首次在东格陵兰对这些沉积物中的摇蚊化石序列进行研究。将推断的气候和环境历史与格陵兰其他沿海无冰区的气候和环境历史进行比较，将有助于更好地了解冰运动、相对海平面变化和气候发展的区域特点，以及相关的原因，如大气和海洋环流模式的变化。

The planned project is part of an international cooperation with the Alfred Wegener Institute (Germany), the Geological Survey of Denmark and Greenland (GEUS, Denmark), the University Lund (Sweden), and the University Utrecht (The Netherlands). The international project is targeted on a detailed reconstruction of the Late Quaternary glacial history and postglacial climatic and environmental changes in East and Northeast Greenland. For this purpose, sample material was collected on an expedition in 2003 from lakes, soils, and geomorphological units on two islands at the outer coast, which according to former studies have partly been ice free during the Last Glacial Maximum. The contribution of the University Leipzig to the project focuses on chronological, sedimentological, and biogeochemical studies of the recovered lake sediment sequences, and, for the first time in East Greenland, on fossil chironomid successions in these deposits. A comparison of the deduced climatic and environmental history with that from other coastal ice-free regions of Greenland will contribute to a better understanding of regional peculiarities in ice movements, relative sea-level changes, and climate developments, and of the related reasons, such as changes in the atmospheric and oceanic circulation patterns.