Collaborative Research: Investigating the Influence of Sea-surface Variability on Ice Sheet Mass Balance and Outlet Glacier Behavior using Records from Disko Bugt, West Greenland

该项目将进一步了解格陵兰岛西部Jakobshavn Isbrae和Disko Bay地区周围的海洋-冰-大气相互作用，特别关注过去两个世纪以来海洋表面温度和海冰变化在调节过去出口冰川行为和冰盖/冰盖质量平衡（降雪和融化）方面的作用。pi将根据新的冰川化学和地层记录，重建迪斯科湾和巴芬湾地区过去的环境条件，这些记录来自三个100米深的冰芯，几个铁芯，以及迪斯科湾周围三个地点的地球物理研究。他们的野外活动将于2013年开始，2014年开始进行主要的冰芯采集活动，随后进行实验室和计算工作，从冰芯中得出气候重建结果。这些结果将补充最近对区域冰动力行为的冰川学研究，以及最近对该地区和时代的古海洋学和冰川地质学条件的重建。达斯和弗雷将分别指导一名全日制博士生，埃文斯将指导本科生研究助理和高级论文。一名高中科学老师也将参加实地考察，并与他在马萨诸塞州的学校的学生以及冰上的学生互动。

This project will further understanding of ocean-ice-atmosphere interaction around the Jakobshavn Isbrae and Disko Bay region of west Greenland, with a particular focus on the role of sea surface temperature and sea ice variability in modulating past outlet glacier behavior and ice sheet/cap mass balance (snowfall and melt) over the past two centuries. The PIs will reconstruct past environmental conditions in the Disko and Baffin Bay region based on new glaciochemical and stratigraphic records from three 100-m deep ice cores, several firn cores, and geophysical studies from three sites surrounding Disko Bay. Their field activities will commence in 2013 with the primary ice coring activity in 2014 and lab and computation work following to derive climate reconstructions from the cores. The results will complement recent glaciological studies of regional ice dynamic behavior, as well as recent paleoceanographic and glacial geologic reconstructions of conditions from this area and era. Das and Frey will each supervise a full-time PhD student, and Evans will supervise undergraduate research assistants and senior theses. A high school science teacher will also participate in the field work and interact with students at his school in Massachusetts as well as from the ice.