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西格陵兰西部的雅各布沙文（Jakobshavn Isbrae和Disko湾地区）周围的海洋冰冰圈相互作用，在过去的两个百分子中，特别关注海面温度和海冰变异性在调节过去的出口冰川行为和冰盖质量/帽质量平衡（降雪和融化）中的作用。 PI将根据来自三个100 m深的冰芯，几个FIRN核心以及来自Disko Bay周围三个地点的新冰层，几个FIRN核心的新冰川化学和地层记录来重建磁盘和巴芬湾地区的过去环境条件。 他们的现场活动将于2013年开始，2014年的主要冰芯活动以及实验室和计算工作，随后从核心获得气候重建。 结果将补充有关区域冰动态行为的近期冰川研究，以及该地区和时代条件的最近的古海洋学和冰川地质重建。 DAS和Frey将每个人都监督一名专职博士生，埃文斯将监督本科研究助理和高级论文。 高中科学老师还将参加现场工作，并与他在马萨诸塞州的学校以及冰上的学生互动。