Cooperative US/USSR Research on Small-Scale Permafrost Mapping

美国/苏联小比例尺永久冻土测绘合作研究

• 批准号: 8721922
• 负责人: Frederick Nelson
• 金额: $ 2.96万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-15 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8721922&HistoricalAwards=false
• 关键词: Cooperative; US; USSR; Research; Small

Maps of permafrost distribution at small geographical scales commonly employ a classification in which high-latitude regions are subdivided on the basis of the areal continuity or dominance of permafrost. The utility of such maps is questionable because classificatory criteria vary radically between different countries and investigators. A physically-based technique for delineating latitudinal permafrost zones using explicit definitions and several variables known to influence permafrost development has had considerable success in replicating empirical results in areas of North America where the distribution of permafrost is well known. This investigation will extend this computational method into the Soviet Union, the richest source of geocryological data, will make a compilation of a standardized world permafrost map feasible and will facilitate comparison of past, present, and future permafrost geographies.

在小地理尺度上的永久冻土分布图通常采用一种分类方法，根据永久冻土的面积连续性或优势性对高纬度地区进行细分。这种地图的效用值得怀疑，因为不同国家和不同研究人员的分类标准大相径庭。利用明确的定义和若干已知会影响永久冻土发展的变量来划定纬向永久冻土带的一种基于物理的技术，在北美已知永久冻土分布的地区复制经验结果方面取得了相当大的成功。这项调查将把这种计算方法扩展到苏联，这是最丰富的地质数据来源，将使一个标准化的世界永久冻土地图的汇编成为可能，并将促进对过去、现在和未来永久冻土地理位置的比较。