Collaborative Research: The Impacts of Arctic Storms on Landfast Ice Variations

合作研究：北极风暴对陆地冰变化的影响

• 批准号: 0712673
• 负责人: Hajo Eicken
• 金额: $ 10.38万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0712673&HistoricalAwards=false
• 关键词: Collaborative; Research; Impacts; Arctic; Storms

Eicken 0712673Univ. of Alaska - FairbanksFunds are provided to examine over 30 years of landfast ice records,cyclone tracks and intensity along with frequency and timing of coastal high windconditions, nearshore pack ice drift, and coastal weather observations in tworepresentative arctic coastal regions. The focus of the project is to examine the relevant processes driving landfast ice responses to storm-produced coastal environmental change. To understand the physics that drive the dynamic and thermodynamic processes of landfast ice, existing coastal observations and numerical modeling will be included in a detailed process analysis.The principal investigators will merge their various data sets and knowledge to address the following questions: (1) How do changes in the storm climate affect the coastal air temperatures and wind conditions? (2) How does landfast ice, including its stability and grounding patterns, respond to coastal winds and storm activity as well as nearshore ice motion and coastal currents? (3) What are the physical connections among those factors determining long-term variations of fast ice extent and duration? (4) What impacts on landfast ice are likely under a scenario of increased storm activity?Landfast ice is a small fraction of the total ice cover of the Arctic Ocean, yet it is of extreme importance to the indigenous polpulation's way of life. It protects the beach from erosion during extended periods of time; it provides a surface over which to travel between villages by snowmobile and sled; it is the surface from which much subsistence hunting (seal, walrus, whale) takes place. Understanding how it is and will change has importance for day-to-day safety, as well as strategic management.

艾肯0712673大学阿拉斯加-费尔班克斯基金提供了超过30年的陆固冰记录，气旋路径和强度沿着与频率和沿海大风条件的时间，近岸浮冰漂移，沿海天气观测在两个代表性的北极沿海地区。该项目的重点是研究驱动陆固冰对风暴造成的沿海环境变化作出反应的相关过程。为了了解驱动固陆冰的动力学和热力学过程的物理学，现有的海岸观测和数值模拟将被包括在一个详细的过程分析中。主要研究人员将合并他们的各种数据集和知识，以解决以下问题：（1）风暴气候的变化如何影响沿海气温和风况？(2)固陆冰，包括其稳定性和接地模式，如何响应沿海风和风暴活动以及近岸冰运动和沿海流？(3)决定固定冰范围和持续时间的长期变化的那些因素之间的物理联系是什么？(4)在风暴活动增加的情况下，对陆固冰可能产生什么影响？陆固冰是北冰洋总冰盖的一小部分，但它对土著居民的生活方式至关重要。 它保护海滩在很长一段时间内不受侵蚀;它提供了一个表面，在村庄之间旅行的雪地车和雪橇;这是表面，许多生存狩猎（海豹，海象，鲸鱼）进行。 了解它是如何变化的，对日常安全和战略管理都很重要。