Laboratory-Based Scaling Laws for Ice Shelf Evolution

基于实验室的冰架演化缩放定律

• 批准号: 1144504
• 负责人: David Holland
• 金额: $ 29.89万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1144504&HistoricalAwards=false
• 关键词: Laboratory; Based; Scaling; Laws; Ice

This award provides support for "Laboratory-Based Laws for Ice Shelf Evolution" from the Antarctic Integrated System Science within the Office of Polar Programs. Studies investigating the dynamics of ice shelves are arguably one of the most, if not the most, important area of research if we hope to make reliable predictions about future global sea-level rise. The dominant mass loss in Antarctic ice shelves occurs in one of two ways: either via basal melt where the ocean interacts with the bottom of the ice shelf, or via calving of icebergs. This award will include studies of both these processes.Intellectual Merit: The project will use laboratory and modeling studies to better understand the processes associated with basal melt beneath the ice sheets (ice-ocean interactions) and fracturing leading to calving of icebergs. Specifically the investigator will perform a suite of experiments in cold rooms available at CRREL (Cold Regions Research and Engineering Laboratory) facilities in New Hampshire. In conjunction with the scale-model ice shelf laboratory studies, the team will use DNS (direct numerical simulation) to model the processes. While others have done scale-model studies, such investigations are rarely (if ever) coupled with numerical modeling. Combining the two is novel, and should lead to important new insights into ice shelf dynamics. One significant challenge will be to ?scale-up? laboratory results to processes relevant to the real world- hence the proposed work is very much proof of concept and appropriate for EAGER funding.Broader Impacts: An understanding of the dynamics controlling the loss of mass from ice shelves is critically important to understanding the future of global sea-level change. The results will be communicated to both the glaciology and modeling community. The project will train one graduate student and promote interactions between CRREL (a federal lab) and NYU (an academic institution).

该奖项提供了对极地计划办公室内南极综合系统科学的“基于实验室的冰架进化法律”的支持。如果我们希望对未来的全球海平面上升做出可靠的预测，那么研究冰架动力的研究可以说是最重要的研究领域之一。 南极冰架上的主要质量损失以两种方式之一发生：通过基底熔体，海洋与冰架底部相互作用，或者通过冰山产犊。 该奖项将包括对这两个过程的研究。智能优点：该项目将使用实验室和建模研究来更好地了解与冰盖下基础融化相关的过程（冰淇淋相互作用）（冰山相互作用），并破裂，导致冰山产犊。具体来说，研究人员将在新罕布什尔州的CRREL（冷区研究与工程实验室）提供的寒冷房间中进行一套实验。结合比例模型冰架实验室研究，团队将使用DNS（直接数值模拟）对过程进行建模。 尽管其他人进行了规模模型研究，但这种研究很少（如果有的话）与数值建模相结合。 结合两者是新颖的，应该导致对冰架动力学的重要新见解。扩展的一个重大挑战是？实验室结果与现实世界相关的过程 - 因此，拟议的工作非常适合概念证明，并且适合于渴望的资助。BROADER的影响：对控制冰架上大规模损失的动态的理解对于理解全球海平面变化的未来至关重要。结果将传达给冰川学和建模社区。 该项目将培训一名研究生，并促进CRREL（联邦实验室）与纽约大学（一个学术机构）之间的互动。