名义上无水矿物的光谱水化特征及其对月球遥感的意义

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-05-12 DOI:10.1016/j.icarus.2025.116651

Kierra A. Wilk , J.L. Bishop , A. Maturilli , C.M. Pieters , J.F. Mustard , K. Robertson

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引用次数: 0

摘要

在真空条件下，研究了月球相关名义无水矿物3 μm和6 μm水化相关特征的形态和强度与外部水化和内部水化（OH和H2O）的关系。在实验室中了解水化作用对月球模拟物质反射光谱的影响，可以深入了解月球表面的遥感观测，以及3 μm和/或6 μm观测确定月球水化形态的潜力。研究表明，在变化的环境条件下，橄榄石和钙长石中宽3 μm吸收特征的形状和强度发生了变化，这与水化作用的去除有关。在~ 3 μm区域，OH和H2O相关吸收特征的重叠性质使得难以独特地确定水化的形态。尽管在3 μm区域有H2O损失的证据，但我们没有观察到6 μm区域H2O的基本弯曲模式，这为在月球表面和整个太阳系探测H2O提出了潜在的挑战。

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Spectral hydration features in nominally anhydrous minerals & implications for lunar remote sensing

The contributions of external and internal hydration (OH and H₂O) on the shape and strength of hydration related features at 3 and 6 μm for lunar relevant nominally anhydrous minerals were investigated under vacuum conditions. Understanding the effect of hydration on the reflectance spectra of lunar analog materials in the laboratory can provide insights into remote sensing observations of the lunar surface and the potential for 3 and/or 6 μm observations to determine the speciation of hydration on the Moon. We demonstrate changes in the shape and strength of the broad 3 μm absorption feature in olivine and anorthite that is associated with the removal of hydration under changing environmental conditions. The overlapping nature of OH and H₂O related absorption features in the ∼3 μm region makes it difficult to uniquely determine the speciation of hydration. Despite evidence of H₂O loss in the 3 μm region, we do not observe the fundamental bending mode of H₂O at 6 μm, posing potential challenges for the detection H₂O on the lunar surface and throughout our solar system.

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.