论文标题

火星的内部动力学和热演化 - 地球动力学透视

Interior Dynamics and Thermal Evolution of Mars -- a Geodynamic Perspective

论文作者

Plesa, Ana-Catalina, Wieczorek, Mark, Knapmeyer, Martin, Rivoldini, Attilio, Walterova, Michaela, Breuer, Doris

论文摘要

在过去的几十年中,全球地球动力学模型已用于研究陆地行星的热演化。随着计算能力的增加和数值技术的提高,这些模型变得更加复杂,模拟现在能够使用高分辨率3D球形壳几何形状,并以强烈的变化粘度(适合地幔材料)。在这项研究中,我们回顾了用于研究火星的热演化和内部动力学的全局3D地球动力学模型。我们讨论如何将这些模型与局部和全球观察结果结合起来,以限制行星的热历史。特别是,我们使用对地壳厚度,地幔结构和核心尺寸的最新见解估计来显示如何将这些约束与3D地球动力学模型结合在一起,以提高我们对MARS内部的内部动力学,当今的热状态和温度变化的理解。

Over the past decades, global geodynamical models have been used to investigate the thermal evolution of terrestrial planets. With the increase of computational power and improvement of numerical techniques, these models have become more complex, and simulations are now able to use a high resolution 3D spherical shell geometry and to account for strongly varying viscosity, as appropriate for mantle materials. In this study we review global 3D geodynamic models that have been used to study the thermal evolution and interior dynamics of Mars. We discuss how these models can be combined with local and global observations to constrain the planet's thermal history. In particular, we use the recent InSight estimates of the crustal thickness, upper mantle structure, and core size to show how these constraints can be combined with 3D geodynamic models to improve our understanding of the interior dynamics, present-day thermal state and temperature variations in the interior of Mars.

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