Rationale for BepiColombo Studies of Mercury's Surface and Composition
Rationale for BepiColombo Studies of Mercury's Surface and Composition
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BepiColombo 研究水星表面和成分的基本原理
DOI：
10.1007/s11214-020-00694-7
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发表时间：
2020
影响因子：
10.3
通讯作者：
Rothery D
中科院分区：
文献类型：
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作者：
Rothery D
BepiColombo有一个更大的，在许多方面更有能力的仪器套件，用于确定水星表面的地形，物理，化学和矿物学特性，而不是美国宇航局的信使号航天器所携带的套件。此外，BepiColombo的数据传输速率也要高得多。这使它能够确认，详细说明，并超越许多信使的显着成就。此外，从2026年开始的BepiColombo轨道科学活动的几何形状将使其能够对北方和南半球进行统一分辨率的观测。这将提供更详细和完整的成像和地形测绘，更好的灵敏度和提高空间分辨率的元素测绘，以及全新的矿物mapping.We讨论信使数据的背景下，准备BepiColombo，并描述的贡献，我们希望BepiColombo对增加知识和了解水星的表面及其组成。目前的许多工作，包括对模拟材料的分析，都是为了更好地理解BepiColombo可能揭示的内容。信使号的一些更引人注目的观测是在独特或极端的条件下获得的。BepiColombo应该能够确认这些观测结果的有效性，并揭示它们在多大程度上代表了整个地球。它还将进行新的观测，以澄清制约和反映地壳起源和演变的地质过程，我们预计，对水星地质历史及其目前空间风化环境的深入了解将使我们能够更好地了解表面化学、形态和结构与地壳类型组成的关系，包括挥发性物质的性质和流动性。这将使估计的地幔组成的地壳派生，并导致更严格的限制模型的水星的起源，包括性质和原始的日心距离的材料，它形成。
BepiColombo has a larger and in many ways more capable suite of instruments relevant for determination of the topographic, physical, chemical and mineralogical properties of Mercury’s surface than the suite carried by NASA’s MESSENGER spacecraft. Moreover, BepiColombo’s data rate is substantially higher. This equips it to confirm, elaborate upon, and go beyond many of MESSENGER’s remarkable achievements. Furthermore, the geometry of BepiColombo’s orbital science campaign, beginning in 2026, will enable it to make uniformly resolved observations of both northern and southern hemispheres. This will offer more detailed and complete imaging and topographic mapping, element mapping with better sensitivity and improved spatial resolution, and totally new mineralogical mapping.We discuss MESSENGER data in the context of preparing for BepiColombo, and describe the contributions that we expect BepiColombo to make towards increased knowledge and understanding of Mercury’s surface and its composition. Much current work, including analysis of analogue materials, is directed towards better preparing ourselves to understand what BepiColombo might reveal. Some of MESSENGER’s more remarkable observations were obtained under unique or extreme conditions. BepiColombo should be able to confirm the validity of these observations and reveal the extent to which they are representative of the planet as a whole. It will also make new observations to clarify geological processes governing and reflecting crustal origin and evolution.We anticipate that the insights gained into Mercury’s geological history and its current space weathering environment will enable us to better understand the relationships of surface chemistry, morphologies and structures with the composition of crustal types, including the nature and mobility of volatile species. This will enable estimation of the composition of the mantle from which the crust was derived, and lead to tighter constraints on models for Mercury’s origin including the nature and original heliocentric distance of the material from which it formed.