Collaborative Research: Spatial and Temporal Variability of Ground Temperature and Thaw, Northern Alaska

合作研究：阿拉斯加北部地温和解冻的时空变化

• 批准号: 0095088
• 负责人: Frederick Nelson
• 金额: $ 38.52万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0095088&HistoricalAwards=false
• 关键词: Collaborative; Research; Spatial; Temporal; Variability

The project will examine in greater detail the depth of thawing of the soils in northern Alaska. Climate change is increasing the depth of thaw and eroding permafrost with concomitant impacts on vegetation, the hydrological balances, and human structures. This research will refine existing methods for mapping the depth of thaw on local and regional scales. The shallow thermal regime will be evaluated across a spectrum of spatial scales in order to elucidate the role of soil structure on heat transport. The impact of heavy snow loading on the thaw depth will be examined based on manipulative experiments. Also, the project will also examine the role of the heat island affect by a community in northern Alaska.

该项目将更详细地研究阿拉斯加北部土壤融化的深度。气候变化正在增加解冻深度，侵蚀永久冻土，同时对植被、水文平衡和人类结构产生影响。这项研究将改进现有的在局部和区域尺度上绘制融化深度的方法。为了阐明土壤结构对热传输的作用，将在空间尺度上评估浅层热状态。通过操作试验研究了大雪荷载对解冻深度的影响。此外，该项目还将研究阿拉斯加北部一个社区对热岛影响的作用。