Interrelations of tectonic deformation and surface erosion with West Antarctic Ice Sheet dynamics

南极洲西部，特别是阿蒙森海地区，拥有整个大陆最明显的冰川质量损失。南极西部冰盖的完全崩塌将导致全球海平面上升3到5米。除了气候和海洋学变化外，冰盖还受到构造和结构历史以及下垫基岩的热流模式的影响。该项目计划旨在更好地了解阿蒙森海地区的长期地球动力学和古地形演变，热流分布，冰川变薄和退缩的历史。这将通过结合应用地球物理方法、热年代学和地表暴露定年来实现。结合这些数据集将提供有关地球动力学活动、热流模式和冰盖演变的时空相关性的信息。总的来说，这个项目将有助于更好地理解岩石圈过程、地表过程和冰川动力学之间的关系。该项目基于2015年2月至3月极地探险XXX/3。在这次考察中，将部署浅层钻井MeBo设备，实现在阿蒙森海的第一次钻井活动。岩心材料将包括基底岩石和碎屑沉积物，大概覆盖了从白垩纪到现在的时间，为研究阿蒙森海地区的演化提供了一个独特的机会。

West Antarctica, and particularly the Amundsen Sea area, hosts glaciers with the most pronounced mass losses of the whole continent. Complete collapse of the West Antarctic Ice Sheet would result in a global sea level rise of 3 to 5 m. Apart from climatic and oceanographic changes, ice sheets are influenced by the tectonic and structural history as well as by heat flow patterns of the underlying bedrock. This project plan aims for a better understanding of the long-term geodynamic and paleo-topographic evolution of the Amundsen Sea area, of its heat flow distribution, and of its glacial thinning and retreat history. This will be achieved by applying a combination of geophysical methods, thermochronology, and surface exposure dating. Combining these data sets will provide information on spatial and temporal correlations of geodynamic activity, heat flow patterns, and ice sheet evolution. In more general terms, this project will contribute to a better understanding of relations between lithospheric processes, surface processes, and glacial dynamics. The project is based on Polarstern expedition XXX/3 in February-March 2015. During this expedition, the shallow drilling MeBo device will be deployed, enabling the first drilling campaign in the Amundsen Sea. Cored material will include basement rocks and clastic sediments presumably covering the time from the Cretaceous to the present, offering a unique opportunity for studying the evolution of the Amundsen Sea area.