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.

Stearns/1255488这项奖项支持一个项目，以通过基于物理的数值模型来了解南极冰川的流动动力学。该模型将用于系统地研究南极冰川的动力学，并测试其对各种扰动的反应。 该项目的智力优点涉及以下事实：出口冰川速度对冰板的质量平衡和对海平面上升的贡献产生重大控制；必须正确理解它们对一系列动态过程的敏感性，并将其纳入预后冰盖模型中。这些目标包括估计各个冰川对气候和非气候强迫的敏感性，根据许多不同的扰动来计算质量通量的变化，并表征冰川反应如何在整个冰盖上变化。 该项目的更广泛影响包括教育和外展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纳入在线交互式网站中，称为动态南极模型（Dynamod），该网站将使学生和研究人员能够研究南极冰川动力学，假设响应行为并测试其结果。详细的模型结果将通过出版物广泛分发给社区，而该模型框架将在线提供供学生和研究人员探索。 拟议的工作将为包括PI，博士后研究人员和冰川博士学位学生在内的几位早期职业科学家提供重要的研究机会。该项目的范围为PI及其整个研究团队提供了冰川学，建模，计算机编程和科学教育的独特培训。 该奖项是一个职业奖，因此研究和教育将通过开发和分发数字冰川流模型和在线冰川数据库进行整合。研究表明，数据驱动的探索以及动态可视化的使用，提高了学生对复杂过程和基本（数学和物理）技能的理解。该项目旨在使用数值流线模型来提高对南极冰川动态的理解，同时还熟悉应用数学，科学和建模技术。