IPY: Flow Dynamics of the Amundsen Sea Glaciers: Thwaites and Pine Island.

Anandakrishnan/0632198该奖项支持一个研究西南极冰盖阿蒙森海部分的思韦茨冰川和松岛冰川的冰盖历史和动态的项目。 与英国南极调查局建立的国际合作将使我们能够进行更全面的地球物理实验，比我们单独进行实验更有效地利用人力和后勤。该项目是确定阿蒙森海湾特征的若干项目之一，在许多规划文件中，阿蒙森海湾被确定为冰动力研究的最重要目标。总的来说，这一“活动脉搏”将使人们更好地了解全球系统的这一重要部分。实地工作将使用三种强大但相对简单的工具测量思韦茨和松岛冰川的冰下环境：反射地震成像、潮汐力的全球定位系统运动监测以及与运动有关的地震活动的被动地震监测。实地工作的结果将用于冰盖建模工作，这些工作将针对海洋终止冰川的情况进行调整，并将评估这些冰川对当前海平面的影响，并预测未来。 该项目的更广泛影响包括聘请一名电影和音频专业人员记录非正式外联工作（公共广播和电视;博物馆）。此外，我们将培养研究生在极地地球物理学和冰川学研究和数值模拟技术。 该项目的最终目标是评估思韦茨冰川在全球海平面变化中的作用，对沿海地区和小岛屿产生广泛的社会影响。

Anandakrishnan/0632198This award supports a project to study ice sheet history and dynamics on the Thwaites Glacier and Pine Island Glacier in the Amundsen Sea sector of the West Antarctic Ice Sheet. The international collaboration that has been established with the British Antarctic Survey will enable a fuller suite of geophysical experiments with more-efficient use of people and logistics than we could achieve individually. This project is one of a number of projects to characterize the Amundsen Sea Embayment, which has been identified in numerous planning documents as perhaps the most important target for ice-dynamical research. Taken together, this "pulse of activity" will result in a better understanding of this important part of the global system. Field work will measure the subglacial environment of Thwaites and Pine Island Glaciers using three powerful, but relatively simple tools: reflection seismic imaging, GPS motion monitoring of the tidal forcing, and passive seismic monitoring of the seismicity associated with motion. The results of the field work will feed into ice-sheet modeling efforts that are tuned to the case of an ocean-terminating glacier and will assess the influence of these glaciers on current sea level and project into the future. The broader impacts of the project involve the inclusion of a film- and audio-professional to document the work for informal outreach (public radio and TV; museums). In addition, we will train graduate students in polar geophysical and glaciological research and in numerical modeling techniques. The ultimate goal of this project, of assessing the role of Thwaites Glacier in global sea level change, has broad societal impact in coastal regions and small islands.