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

合作研究：利用西格陵兰迪斯科布格特的记录调查海面变化对冰盖质量平衡和出口冰川行为的影响

• 批准号: 1205018
• 负责人: Karen Frey
• 金额: $ 18.49万
• 依托单位: Clark University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205018&HistoricalAwards=false
• 关键词: Collaborative; Research; Investigating; Influence; Sea

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.

该项目将进一步了解格陵兰西部雅各布港-伊斯布雷和迪斯科海湾地区周围的海洋-冰-大气相互作用，特别侧重于海表面温度和海冰变异性在调节过去两个世纪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。PIS将根据三个100米深的冰芯、几个降雪岩芯的新冰化学和地层记录，以及迪斯科海湾周围三个地点的地球物理研究，重建迪斯科和巴芬湾地区过去的环境条件。他们的实地活动将于2013年开始，主要的冰芯活动将于2014年开始，随后将进行实验室和计算工作，以根据岩芯恢复气候。这些结果将补充最近对区域冰动力学行为的冰川学研究，以及最近对该地区和时代的古海洋学和冰川地质条件的重建。达斯和弗雷将各自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。一名高中科学教师也将参与实地工作，并与马萨诸塞州学校的学生和冰上的学生互动。