Is there H2O stacking disordered ice I in the Solar System?
Is there H2O stacking disordered ice I in the Solar System?
复制标题
太阳系中是否存在H2O堆叠无序冰I？
DOI：
10.1016/j.icarus.2023.115897
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发表时间：
2024
期刊：
影响因子：
3.2
通讯作者：
Salzmann C
中科院分区：
文献类型：
--
作者：
Salzmann C
水冰在太阳系中大量存在，它参与了广泛的大气和地质过程。在这里，我们专注于堆叠无序冰I（冰Isd）是否存在于太阳系中的问题。所需的条件形成冰Isdare的描述，我们认为，以前的描述'立方冰'（冰Ic）在文献中可能实际上一直关注冰Isd。与稳定的六边形冰I（冰Ih）和冰Ic相比，冰I是一种高度复杂的材料，包括广泛的可能的堆叠方式和结构。描述一个给定的冰样品的最基本的量是它的立方度，它反映了立方堆积的分数。在介绍了用于识别和识别冰Isd的表征技术之后，我们讨论了太阳系中冰Isd可能存在的各种环境及其存在的相关性。这包括内行星的大气层，各种冰冷的卫星以及彗星和太阳系远处的其他冰冷物体。堆积无序的细节可能包含有关冰Isd样品的形成和热历史的信息。这提供了一个令人兴奋的前景，即利用冰作为大气和地质过程的标志材料。冰的晶体学空间群Isdal允许极性结构，这可能是空间中冰粒吸积的重要因素。我们的结论是，冰应该存在于太阳系的几个位置，并可能大量存在。在自然环境中确定冰的存在是我们理解整个太阳系水冰重要性的下一个重要里程碑。
Water ice exists in large quantities across the Solar System, and it is involved in a wide range of atmospheric and geological processes. Here we focus on the question if stacking disordered ice I (ice Isd) is present in the Solar System. The conditions required to form ice Isdare described and we argue that previous descriptions of ‘cubic ice’ (ice Ic) in the literature may in fact have been concerned with ice Isd. In contrast to the stable hexagonal ice I (ice Ih) and ice Ic, ice Isdis a highly complex material that encompasses a wide range of possible stacking regimes and structures. The most fundamental quantity to describe a given ice Isdsample is its cubicity which reflects the fraction of cubic stacking. Following an introduction into the characterisation techniques used to identify and characterise ice Isd, we discuss the various environments in the Solar System where ice Isdmay exist and the relevance its existence may have. This includes the atmospheres of the inner planets, various icy moons as well as comets and other icy objects in the far reaches of the Solar System. The details of the stacking disorder may contain information about the formation and thermal history of ice Isdsamples. This offers the exciting prospect of using ice Isdas a marker material for atmospheric and geological processes. The crystallographic space group of ice Isdallows polar structures which could be an important factor for the accretion of ice particles in space. We conclude that ice Isdshould exist at several locations in the Solar System and in potentially large quantities. The definitive identification of ice Isdin a natural environment is a next major milestone in our understanding of the importance of water ice across the Solar System.
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