基于嫦娥数据的月球虹湾区域TiO2、MgO含量反演

Inversion of contents of TiOz and MgO in Sinus Iridum Area of lunar surface based on Chang＇e data

月球虹湾地区覆盖多种地质类型，构造类型众多，包括较古老的高地、风暴洋（目前发现了最年轻的玄武岩喷发单元）、雨海（重要的月面历史划分节点）和冷海等月海玄武岩地质单元。撞击坑类型众多，从碗型撞击坑到较大型内部发生玄武岩填充的柏拉图撞击坑均有。虹湾也将是中国未来的探月着陆区候选区域。反演该区域TiO2、MgO含量的分布对于月球科学研究和未来月球资源开采与利用具有重要意义。Ti元素对月海玄武岩的演化起到了关键作用，而研究Mg元素的分布可以探索高地区域富镁月岩等。文中利用LSC2；的Apollo样品，采用修正光谱角度与基于光谱反射率多元统计（MNF）的数学模型，依据嫦娥一号高光谱数据反演TiO2、MgO含量，将LQ-4区域划为高钛、中钛、低钛区域以及富镁岩高地区域，将它们与Lucey、Shkuratov等人的光学模型用于aementine影像和伽马射线谱仪数据填图的结果进行对比，二者具较好的一致性。

There are a variety of geological types and structure types in LQ-4 District, including older highlands and mare basalt geological units of the Oceanus Proeellarum （the youngest basalt eruption unit is found here till now）, Mare Imbrium （important division node of lunar surface history）, Mare Frigoris, etc. And also many types of impact craters from bowl-shaped to larger Plato impact craters with basalt filled inside are here. Sinus Iridum in this district will be the candidate region of China＇s future lunar exploration landing area. Inversion of the distribution of Ti（）~, MgO content across this area has an important meaning to lunar scientific research and exploitation and utilization of lunar resources in the future. Ti played a crucial role in the evolution of mare basalt and the distribution of Mg can be used to explore Mg-rich lunar rock in the highland areas. Sinus Iridum area is divided into high titanium area, medium titanium area, low titanium area and Mg-rich lunar rock highland area according to the inversion result of TiOz, MgO content based on Chang＇e- Ⅰ hyperspectral Data which is based on the Apollo samples of LSCC using the mathematical model of Correction Spectral Angle and Multivariate Statistical Analysis （MNF） based on spectral reflectance. A comparison of the mapping results of the optical models of Lucey, Shkuractov and other researchers on Clementine and the gamma ray spectrometer data reveals that the inversion results are consistent.