Thermal and hydrological investigations of degrading permafrost

永久冻土退化的热学和水文研究

• 批准号: RGPIN-2016-06156
• 负责人: Burn, Christopher
• 金额: $ 2.4万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633928
• 关键词: Thermal; hydrological; investigations; degrading; permafrost

The long-term objective of our research program is to understand the response of permafrost terrain to changes in factors that control ground temperatures, particularly changes in surface conditions and climate. Permafrost is ground that remains at or below 0°C for two or more years. The principal factor governing the presence of permafrost is climate, and recent climate warming has led to increases in permafrost temperature throughout the North. The practical consequences of such warming are greatest when the seasonally thawed active layer penetrates into icy ground at the top of permafrost.

我们的研究计划的长期目标是了解永冻土地形对控制地面温度的因素变化的反应，特别是地表条件和气候的变化。永久冻土是指在0°C或0°C以下保持两年或两年以上的地面。决定永久冻土存在的主要因素是气候，最近的气候变暖导致整个北方的永久冻土温度上升。当季节性解冻的活动层渗透到永久冻土层顶部的冰冷地面时，这种变暖的实际后果是最大的。