M. Formisano, F. Altieri, A. Frigeri, M. D. De Sanctis, C. Federico, G. Magni, E. Ammannito, S. De Angelis, M. Ferrari
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引用次数: 0
摘要
这项工作的目的是从热物理的角度来表征氧平原地区Germania Lacus的耐暗单元(DRU),为约束组成该单元的材料的性质提供新的见解。采用常用的玄武岩热物性参数值和几种孔隙度值,研究了玄武岩储层的温度分布。作为一个额外的例子,我们还探索了鹅卵石组成的成分。这里开发的数值模型是Formisano et al. 2021最近发表的工作的后续,它考虑了场地的大规模地形,并假设了大气的日温度分布,而不是恒定值(与Formisano et al. 2021不同)。与火星探路者号和海盗号的数据以及数值模型的比较也被报道。这里所描述的方法可以用于描述火星表面其他地点的特征,以及可用的小尺度地形数据。
Thermal Modeling of Oxia Planum: Thermophysical Characterization of the Dark Resistant Unit (DRU) in the Germania Lacus
The aim of this work is to characterize, from a thermophysical perspective, the dark resistant unit (DRU) characterizing Germania Lacus in the Oxia Planum Region, providing new insights to constrain the nature of the materials which compose this unit. We investigated the temperature distribution of the DRU by adopting common values of the thermophysical parameters of the basalt and by exploring several values of porosity. As an additional case, we also explore a composition made of pebbles. The numerical model developed here represents a follow-up of the work recently published by Formisano et al. 2021, and it takes into account a large-scale topography of the site and assumes a diurnal temperature profile for the atmosphere rather than a constant value (unlike Formisano et al. 2021). Comparisons with Mars Pathfinder and Viking data as well as numerical models are also reported. The methodology described here could be useful to characterize as well other sites on Mars’ surface with available small-scale topographic data.
期刊介绍:
Advances in Astronomy publishes articles in all areas of astronomy, astrophysics, and cosmology. The journal accepts both observational and theoretical investigations into celestial objects and the wider universe, as well as the reports of new methods and instrumentation for their study.