摘要
月球表面矿物丰度是揭示其地质演化过程的关键信息,精准获取该数据对月球科学研究意义重大。然而,地形对高光谱数据的获取和矿物丰度反演结果产生显著影响。本研究以Apollo任务登陆区及周边为目标区域,开展矿物丰度反演方法的系统验证与应用。对月球矿物学测绘仪高光谱数据进行空间配准、辐射定标及地形校正等预处理,有效降低数据误差,获取高保真的月球表面反射光谱,为后续反演奠定可靠数据基础。在此之上,创新性融合辐射传输物理模型与光谱稀疏解混模型,针对研究区内斜长石、橄榄石、辉石等主要矿物,完成高精度矿物丰度反演计算。通过将反演结果与Apollo任务采集的月球高地样品实验室分析数据进行定量比对,系统评估反演方法准确性。结果显示,反演的矿物丰度与样品实测值一致性良好,均方根误差在0.17左右。该成果为基于月球矿物学测绘仪高光谱数据开展大范围、高可信度的月球矿物填图提供了有效方法支撑,也为深入研究月球高地矿物演化过程提供了重要定量依据。
The mineral abundance on the lunar surface is the crucial information for revealing the geological evolution process of the Moon.To accurately acquire this kind of data is of great significance for the lunar scientific research.However,topographic features have a significant influence on the acquisition of hyperspectral data and the inversion results of mineral abundances.In this paper,the Apollo 16 landing area and its vicinity are selected as the study region for the systematic verification and application of the mineral abundance inversion method.Firstly,hyperspectral data from the Moon Mineralogy Mapper are pre-processed with the spatial alignment,radiometric calibration,and topographic correction in order to effectively reduce deviations of data and to obtain high-fidelity reflectance spectra of the lunar surface for providing a reliable base of data for the subsequent inversion.Additionally,by innovatively integrating the radiative transfer physical model with a spectral sparse unmixing model,we have completed the high-precision abundance inversion calculations for major minerals including olivine,plagioclase,and pyroxene in the study area.The accuracy of the inversion method has been systematically evaluated by quantitatively comparing the inversion results with laboratory analytical data of lunar highland samples collected during the Apollo 16 mission.The results show that the inverted mineral abundances align well with the measured values of the relavant samples,with the mean absolute deviations stabilizing at around 0.17.These findings provide effective methodological support for the large-scale high-confidence lunar mineral mapping based on the hyperspectral data from the Moon Mineralogy Mapper and offer an important quantitative foundation for further studies on the mineral evolution process of the lunar highlands.
作者
孙旖繁
甄治钧
陈圣波
曹利赛
曾庆鸿
崔亮
SUN Yifan;ZHEN Zhijun;CHEN Shengbo;CAO Lisai;ZENG Qinghong;CUI Liang(College of Geoexploration Science and Technology,Jilin University,Changchun Jilin 130000,China)
出处
《矿物学报》
北大核心
2025年第6期1106-1114,共9页
Acta Mineralogica Sinica
关键词
月球矿物绘图仪
Apollo登陆区
行星地质遥感
Moon Mineralogy Mapper
The Apollo Landing Site
Planetary geological remote sensing
