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Sustainability of Extreme Microbial Ecosystems to the Comprehensive Impact of Physical Factors of the Martian Regolith

机译:极端微生物生态系统对火星概念物理因素综合影响的可持续性

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摘要

As the key parameters of the Martian regolith, we have studied the combined effect of gamma radiation (1 and 10 kGy), low temperature (–50°C), and low pressure (1 Torr) on the microbial communities of extreme ecotopes of Earth to estimate the duration of cryopreservation of hypothetical Martian ecosystems in a viable state. The obtained data suggest that cryopreservation of viable microorganisms in the surface layer of the regolith is possible for at least 130000 years; at a depth of 30 cm, for 170000 years; at a depth of 2 m (the depth which the ExoMars 2020 mission must reach), for 330000 years; and at a depth of 5 m, for 2 million years.
机译:作为火星概念的关键参数,我们研究了伽玛辐射(1和10kGy),低温(-50°C)和低压(1托)对地球的微生物群落的综合影响 以可行状态估算假设火星生态系统的冷冻保存持续时间。 所获得的数据表明,在极锶的表面层中的可行微生物的冷冻保存是可能的至少13万年; 深度为30厘米,17万年; 深度为2米(exoMars 2020任务必须达到的深度),330000岁; 在5米的深度,有200万年。

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