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首页> 外文期刊>Planetary and space science >Detection of a dry-frozen boundary inside Martian regolith
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Detection of a dry-frozen boundary inside Martian regolith

机译：检测火星长石内部的干冻边界

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摘要

The present work investigates the time oscillations of the temperature at several depths of a Martian soil analogue made of two layers of different physical properties. The maximum temperature-time oscillation inside the Martian soil analogue, DT, and its derivative with depth, d(DT)/dz or DDT, can be analysed to understand the presence of a boundary between dry and frozen soil. The maximum temperature-time oscillation, DT, reduces by about one order of magnitude at the boundary between dry and frozen soil if a frozen layer is present. The reduction of DT at the boundary between two dry soils with different porosity is much smaller. DDT decreases by more than one order of magnitude at the boundary between dry and frozen soil if a frozen layer is present. The reduction of DDT at the boundary between two dry soils with different porosity is much smaller.
机译：本工作研究了由两层物理特性不同的火星土壤类似物在几个深度处温度的时间振荡。可以分析火星土壤类似物DT及其深度的导数d（DT）/ dz或DDT内的最大温度-时间振荡，以了解干燥土壤和冷冻土壤之间是否存在边界。如果存在冻结层，则在干燥土壤和冻结土壤之间的边界处，最大温度时间振荡DT降低约一个数量级。在具有不同孔隙率的两种干燥土壤之间的边界处，DT的减少量要小得多。如果存在冻结层，DDT在干燥土壤和冻结土壤之间的边界处会减少一个以上的数量级。在两种孔隙度不同的干土之间的边界处，滴滴涕的减少量要小得多。

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