论文标题

矮星(1)Cere的地壳中的热对流

Thermal convection in the crust of the dwarf planet (1) Ceres

论文作者

Formisano, M., Federico, C., Castillo-Rogez, J., De Sanctis, M. C., Magni, G.

论文摘要

谷神星是主皮带中最大的身体,其特征是其内部大量水冰。此功能是由其相对较低的体积密度(2162 kg m $^{ - 3} $)提出的,而其部分分化为多种地质和地球化学特征建议,其部分分化为岩石核心和冰壳:由水性变化产生的矿物质和盐,由水性变化,冰冷的斑块上的冰冷的斑块,在表面上,裂开的形式解释了表面上。在这项工作中,我们探讨了该成分如何影响谷神星的地壳中热对流的特征。我们的结果表明,热对流的发作很困难,当它发生短暂时,这可能意味着谷神星一直保存直到现在,正如Castillo-Rogez等人最近所暗示的。

Ceres is the largest body in the Main Belt, and it is characterized by a large abundance of water ice in its interior. This feature is suggested by its relatively low bulk density (2162 kg m$^{-3}$), while its partial differentiation into a rocky core and icy crust is suggested by several geological and geochemical features: minerals and salts produced by aqueous alteration, icy patches on the surface, lobate morphology interpreted as surface flows. In this work we explore how the composition can influence the characteristics of thermal convection in the crust of Ceres. Our results suggest that the onset of thermal convection is difficult and when it occurs it is short lived and this could imply that Ceres preserved deep liquid until present, as recent suggested by the work of Castillo-Rogez et al.. Moreover, cryovolcanism could be driven by diapirism (chemical convection) rather than thermal convection.

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