CAREER: Improving Understanding of Antarctic Glacier Dynamics Through an Interactive Numerical Flowline Model

职业：通过交互式数值流线模型增进对南极冰川动力学的理解

• 批准号: 1255488
• 负责人: Leigh Stearns
• 金额: $ 66.25万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1255488&HistoricalAwards=false
• 关键词: CAREER; Improving; Understanding; Antarctic; Glacier

Stearns/1255488This award supports a project to understand the flow dynamics of Antarctic glaciers by means of a physically-based numerical model. The model will be used to systematically investigate the dynamics of Antarctic glaciers, and to test their response to a variety of perturbations. The intellectual merit of the project relates to the fact that outlet glacier speeds exert a major control on ice sheet mass balance and contribution to sea level rise; it is essential that their sensitivity to a range of dynamic processes is properly understood and incorporated into prognostic ice sheet models. The objectives include estimating the sensitivity of individual glaciers to both climate and non-climate forcings, calculating changes in mass flux based on a number of different perturbations, and characterizing how glacier response varies across the ice sheet. The broader impacts of the project include education and outreach as well as contributions to the field of ice sheet modeling. The numerical model used in this project will be incorporated into an online interactive website, called the DYNamic Antarctic MODel (DYNAMOD) that will allow students and researchers to investigate Antarctic glacier dynamics, hypothesize about response behaviors, and test their results. Detailed model results will be widely distributed to the community through publications, while the model framework will be available online for student and researcher exploration. The proposed work will provide significant research opportunities for several early-career scientists, including the PI, a Post-Doctoral Researcher, and a glaciology PhD student. The scope of the project provides unique training in glaciology, modeling, computer programming and science education for the PI and her entire research team. The award is a CAREER award and as such the research and education will be integrated through the development and distribution of a numerical glacier flow model and online glacier database. Studies show that data-driven explorations, and the use of dynamic visualizations, increase student understanding of both complex processes and fundamental (math and physics) skills. This project aims to use a numerical flowline model to improve understanding of Antarctic glacier dynamics while also familiarizing students with applied math, science and modeling techniques.

该奖项支持一个通过基于物理的数值模型来了解南极冰川流动动力学的项目。该模型将用于系统地研究南极冰川的动力学，并测试它们对各种扰动的反应。该项目的知识价值在于，冰川出口速度对冰盖质量平衡和海平面上升起着重要的控制作用；必须适当了解它们对一系列动态过程的敏感性，并将其纳入预测冰盖模式。目标包括估计个别冰川对气候强迫和非气候强迫的敏感性，根据若干不同的扰动计算质量通量的变化，以及描述整个冰盖上冰川响应的变化特征。该项目的更广泛影响包括教育和推广以及对冰盖建模领域的贡献。该项目中使用的数值模型将被整合到一个名为“南极动态模型”（DYNAMOD）的在线互动网站中，该网站将允许学生和研究人员调查南极冰川的动态，对响应行为进行假设，并测试他们的结果。详细的模型结果将通过出版物广泛分发给社区，而模型框架将在线提供，供学生和研究人员探索。这项提议的工作将为几位早期职业科学家提供重要的研究机会，包括PI，博士后研究员和冰川学博士生。该项目的范围为PI和她的整个研究团队提供了冰川学、建模、计算机编程和科学教育方面的独特培训。该奖项是一个职业奖，因此，研究和教育将通过开发和分发一个数值冰川流动模型和在线冰川数据库来整合。研究表明，数据驱动的探索和动态可视化的使用，增加了学生对复杂过程和基础（数学和物理）技能的理解。该项目旨在利用数值流线模型来提高对南极冰川动力学的理解，同时也使学生熟悉应用数学、科学和建模技术。