Collaborative Research: Antarctic Permafrost, Cenozoic Paleoenvironment, Ground Ice Stability

合作研究：南极多年冻土、新生代古环境、地面冰稳定性

• 批准号: 9614969
• 负责人: E. Imre Friedmann
• 金额: $ 6.5万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9614969&HistoricalAwards=false
• 关键词: Collaborative; Research; Antarctic; Permafrost; Cenozoic

9614969 Friedman This award is for support for a one year study to further test the use of bacteria preserved in permafrost, as indicators of paleoclimate at the time the sediments were deposited and frozen. Changes in climate, especially major ones, are thought to be recognizable in the bacterial fingerprints of the sediment layers. A one year pilot project was conducted in which drilling was performed and cores were collected at a number of sites in the McMurdo Dry Valleys region of Antarctica. Viable bacteria and bacterial products (methane and enzymes) were found in the cores. The ice content of all samples was unexpectedly high (at least 25% and up to over 50%). These results provide strong support to the idea that Martian permafrost may contain ground ice and that ancient permafrost on Mars may contain samples-possibly viable-of life forms from an earlier, wetter period. Continued analyses of the existing core samples will be undertaken in this project

这个奖项是为了支持一项为期一年的研究，进一步测试永久冻土中保存的细菌的用途，作为沉积物沉积和冻结时古气候的指标。人们认为，气候变化，尤其是重大气候变化，可以通过沉积层的细菌指纹来识别。进行了为期一年的试点项目，在南极洲麦克默多干谷地区的一些地点进行钻探和收集岩心。在岩心中发现了活菌及其产物（甲烷和酶）。所有样品的冰含量都出乎意料地高（至少25%，最高超过50%）。这些结果有力地支持了火星永久冻土可能含有地下冰的观点，以及火星上古老的永久冻土可能含有来自更早、更湿润时期的生命形式的样本（可能是可行的）。本项目将继续对现有岩心样本进行分析