Spectral Deconvolution Analysis of Mafic Mineral in Irregular Mare Patches on the Moon

IF 0.6 Q4 ASTRONOMY & ASTROPHYSICS

Journal of Astronomy and Space Sciences Pub Date : 2022-12-01 DOI:10.5140/jass.2022.39.4.127

I. Hong, Yu Yi, Nuri Park

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引用次数: 0

Abstract

Irregular mare patches (IMPs), recently discovered on the Moon, are eruptions of magma on the lunar surface, and their origins are still in question. While prior studies on IMPs have mainly focused on optical image analysis, in this study, an analysis of the characteristics of minerals is performed exemplary for the first time. Modified Gaussian model (MGM) deconvolution was applied to the infrared spectrum to confirm the properties of the mafic mineral. Mafic minerals were analyzed for 6 olivine-rich (Ol-rich) IMPs out of 91 currently reported, and only 4 of them yielded results of significance. All four sites showed more abundance of Fe than Mg, and manifested a weak relationship with Mg-suite rock. However, a problem was discovered during the MGM application process due to pilot implementation. In order to solve this problem, it is required to adjust the MGM initial condition settings more precisely and to increase the signal to noise ratio of the observation data. Moreover, it is necessary to analyze the mineral properties for all IMPs considering minerals other than Ol and utilize them to deduce the origin of the IMPs.

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月球不规则海斑中镁铁质矿物的光谱反卷积分析

最近在月球上发现的不规则海斑(IMPs)是月球表面岩浆的喷发，它们的起源仍然是个问题。虽然以往对imp的研究主要集中在光学图像分析上，但本研究首次对矿物特征进行了示范性分析。利用修正高斯模型(MGM)对红外光谱进行反褶积，确定了该基性矿物的性质。对目前报道的91个富含橄榄石(Ol-rich)的imp中的6个进行了镁铁质矿物分析，其中只有4个得到了有意义的结果。4个地点的Fe丰度均高于Mg，且与镁套件岩的关系较弱。然而，由于试点实施，在米高梅申请过程中发现了一个问题。为了解决这一问题，需要更精确地调整MGM初始条件设置，提高观测数据的信噪比。此外，有必要分析所有imp的矿物性质，考虑除Ol以外的矿物，并利用它们来推断imp的起源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Astronomy and Space Sciences ASTRONOMY & ASTROPHYSICS-

CiteScore

1.30

自引率

20.00%

发文量

审稿时长

12 weeks

期刊介绍： JASS aims for the promotion of global awareness and understanding of space science and related applications. Unlike other journals that focus either on space science or on space technologies, it intends to bridge the two communities of space science and technologies, by providing opportunities to exchange ideas and viewpoints in a single journal. Topics suitable for publication in JASS include researches in the following fields: space astronomy, solar physics, magnetospheric and ionospheric physics, cosmic ray, space weather, and planetary sciences; space instrumentation, satellite dynamics, geodesy, spacecraft control, and spacecraft navigation. However, the topics covered by JASS are not restricted to those mentioned above as the journal also encourages submission of research results in all other branches related to space science and technologies. Even though JASS was established on the heritage and achievements of the Korean space science community, it is now open to the worldwide community, while maintaining a high standard as a leading international journal. Hence, it solicits papers from the international community with a vision of global collaboration in the fields of space science and technologies.