Collaborative Research: Subglacial Controls on Greenland Ice Sheet Marginal Acceleration

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。为研究短期冰盖速度变化的性质和原因提供了资金。工作地点将设在格陵兰的瑞士营地附近，重点是通过综合观测方法研究冰盖、大气和海床之间的相互作用，其中包括钻孔地球物理学、地面GPS和建模。PIs建议：(1)利用钻孔水压传感器测量夏季冰下水系统的变化；(2)利用地表GPS和实测钻孔变形率测量冰盖对基础条件变化的响应；(3)测量地表温度和基底温度，以输入到流动模型中，并约束冰变形的估计；(4)将这些数据与基于GC-Net的遥感数据和气象数据以及实测湖泊体积的融水和地表水代用数据进行关联。pi打算与博士合作。Martin Funk和Martin Luthi，他们向瑞士国家科学基金会提交了一份提案。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Funds are provided to examine the nature and cause of short-term ice sheet velocity changes. The work field would occur near Swiss Camp, Greenland and focus on the interactions between the ice sheet, the atmosphere and the bed through an integrated observational approach which involves borehole geo- physics, surface-based GPS and modeling. The PIs propose to: (1) measure changes in the subglacial water system over the summer season using borehole water pressure transducers; (2) measure the ice sheet response to changes in basal conditions with surface-based GPS and measured rates of borehole deformation; (3) measure englacial and basal temperatures for input into flow models and to constrain estimates of ice deformation and; (4) correlate these data to melt and surface water volume proxies based on remote sensing data and meteorological data available from GC-Net and measured lake volume. The PIs intend to collaborate with Drs. Martin Funk and Martin Luthi, who have submitted a proposal to the Swiss Nation Science Foundation.