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。资金用于研究短期冰盖速度变化的性质和原因。 工作场将设在格陵兰岛的瑞士营附近，重点是通过一种综合观测方法研究冰盖、大气层和海床之间的相互作用，这种方法涉及钻孔地球物理学、地面全球定位系统和建模。主要研究者建议：（1）使用钻孔水压传感器测量夏季冰下水系统的变化;（2）使用地面GPS和测量的钻孔变形率测量冰盖对基底条件变化的响应;（3）测量冰川和基底温度，以输入流动模型，并限制冰变形的估计;（4）根据GC-Net提供的遥感数据和气象数据以及测量的湖泊体积，将这些数据与融化和地表水体积代理相关联。PI打算与Martin Funk和Martin Luthi博士合作，他们已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.