基于辐射传输模型的月表铁镁质矿物定量反演:以嫦娥三号着陆区为例

发布时间：2018-09-08 09:18

【摘要】：我国嫦娥三号着陆于雨海北部的年轻玄武岩熔岩平原上,该区域的物质成分和矿物组成对于理解月球年轻的火山活动具有重要研究价值。月球全球勘探者(Lunar Prospector,LP)探测的元素数据揭示着陆区附近岩石类型主要为高铁中钛玄武岩(19.5%FeO;5.2%TiO_2)。本研究利用月球矿物绘图仪(Moon Mineralogy Mapper,M~3)获取的嫦娥三号着陆区附近的新鲜撞击坑高光谱数据,采用Hapke辐射传输模型和修正高斯模型(MGM)联合分析,对其年轻月海玄武岩铁镁质矿物进行了定量反演。研究表明该区域玄武岩中矿物组成以单斜辉石矿物为主,存在较高比例的橄榄石。基于光谱库匹配方法和MGM优化分析,我们反演出单斜辉石,斜方辉石,橄榄石和钛铁矿四种矿物的相对体积比为57.6:18.0:15.3:9.1,这一研究结果有待于与嫦娥三号玉兔号月球车上搭栽的红外成像光谱仪数据进行比对,以期从遥感和就位探测两个角度获得对于该地区矿物和岩石类型的全面认识。
[Abstract]:Chang'e-3 landed on a young basalt lava plain in the northern part of the Yuhai Lake, China. Material and mineral compositions in this area are of great value for understanding the young volcanic activities of the moon. Element data from Lunar Prospector (LP) reveal that the rocks near the landing area are mainly titanium basalts in high iron. Rocks (19.5% FeO; 5.2% TiO_2). In this study, the hyperspectral data of fresh impact craters near the landing area of Chang'e-3 were obtained by the Moon Mineralogy Mapper (M~3). Hapke radiation transfer model and modified Gaussian model (MGM) were used for quantitative inversion of iron-magnesium minerals in young lunar sea basalts. The relative volume ratio of clinopyroxene, orthopyroxene, olivine and ilmenite is 57.6:18.0:15.3:9. The data of the infrared imaging spectrometer on the Yutu lunar rover were compared with each other in order to get a comprehensive understanding of the mineral and rock types in this area from the remote sensing and in-situ detection.
【作者单位】：山东大学空间科学研究院山东省光学天文与日地空间环境重点实验室;中国科学院月球与深空探测重点实验室;中国科学院地球化学研究所;
【基金】：国家自然科学基金项目(41490634、41473065、U1231103、41373068) 中国科学院重点部署项目(KGZD-EW-603)、中国科学院月球与深空探测重点实验室开放基金项目山东大学(威海)青年学者未来计划(2015WHWLJH14)联合资助
【分类号】：P184.5

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