ExoMars 2022着陆点的缺氧平原地下热模拟

IF 1.6 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Advances in Astronomy Pub Date : 2021-09-01 DOI:10.1155/2021/9924571

M. Formisano, M. D. De Sanctis, C. Federico, G. Magni, F. Altieri, E. Ammannito, S. De Angelis, M. Ferrari, A. Frigeri

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引用次数: 3

摘要

ExoMars 2022任务的着陆点Oxia Planum需要数值模拟来表征其热物理特性。ExoMars探测器上安装了一个钻井系统，它将能够分析火星地下2米的情况。Ma_MISS光谱仪(火星地下多光谱成像仪，Coradini和Da Pieve, 2001年)将调查钻探产生的钻孔侧壁，提供高光谱图像。目前还不完全清楚在奥夏平原的地下是否能找到水冰。然而，Ma_MISS有能力描述和绘制可能存在的冰，特别是水冰的存在。我们通过改变热惯性对地下温度进行了模拟，并量化了自热的影响。此外，通过探索不同的摩擦系数和角钻速度，我们量化了钻井作业释放的热量，以评估可能存在的水冰的寿命。

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Subsurface Thermal Modeling of Oxia Planum, Landing Site of ExoMars 2022

Numerical simulations are required to thermophysically characterize Oxia Planum, the landing site of the mission ExoMars 2022. A drilling system is installed on the ExoMars rover, and it will be able to analyze down to 2 meters in the subsurface of Mars. The spectrometer Ma_MISS (Mars Multispectral Imager for Subsurface, Coradini and Da Pieve, 2001) will investigate the lateral wall of the borehole generated by the drill, providing hyperspectral images. It is not fully clear if water ice can be found in the subsurface at Oxia Planum. However, Ma_MISS has the capability to characterize and map the presence of possible ices, in particular water ice. We performed simulations of the subsurface temperatures by varying the thermal inertia, and we quantified the effects of self-heating. Moreover, we quantified the heat released by the drilling operations, by exploring different frictional coefficients and angular drill velocities, in order to evaluate the lifetime of possible water ice.

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来源期刊

Advances in Astronomy ASTRONOMY & ASTROPHYSICS-

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

22 weeks

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.