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

9614969弗里德曼该奖项是对一项为期一年的研究的支持，该研究旨在进一步测试保存在永久冻土中的细菌的使用情况，作为沉积物沉积和冻结时的古气候指标。气候的变化，特别是主要的气候变化，被认为可以从沉淀层的细菌指纹中辨认出来。开展了为期一年的试验项目，在南极洲麦克默多干旱河谷地区的若干地点进行了钻探和岩芯采集。在岩芯中发现了活细菌和细菌产物(甲烷和酶)。所有样本的含冰量都出人意料地高(至少25%，高达50%以上)。这些结果有力地支持了火星永久冻土层可能含有地面冰，以及火星上古老的永久冻土层可能含有早期湿润时期的生命样本--可能是可行的--的观点。本项目将继续对现有岩心样品进行分析。

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