月球表面矿物二向性反射特性实验研究  

Experimental study on bidirectional reflectance characteristics of minerals on lunar surface

作　　者：路鹏[1,2] 陈圣波[1] 崔腾飞[1] 周超[1] 杨倩[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]中国科学院月球与深空探测重点实验室,北京100000

出　　处：《岩石学报》2016年第1期107-112,共6页Acta Petrologica Sinica

基　　金：国家863计划课题(2015AA123704);国家自然科学基金项目(41490634;41372337);月球与深空探测重点实验室开放基金项目联合资助

摘　　要：月表物质成分探测是月球探测的重要组成部分。研究矿物在光学波段的吸收特征,可以达到识别月表矿物的目的。作为月岩的风化产物,月壤的成分包括了主要的月球成岩矿物：斜长石、橄榄石、辉石等。本课题以斜长石和单斜辉石作为研究对象,旨在研究单矿物的二向性反射特性。影响月壤反射率的因素包括成分、表面物理特性等多种因素,研究中选用美国ASD公司Filedspec3光谱仪,测量单矿物不同颗粒粒度状态下350~2500nm的二向性反射特征。结果表明,观测几何角度变化对反射率的影响较大,有明显的二向性特征,在方位角180°及0°方位热点较明显。反射率随粒径降低而增加。实验结果可为月表矿物反演研究提供有力的证据。二向性反射方向的研究也为合理选择观测几何条件提高月表信息获取精度成为可能。Surface material composition is an important part of lunar detection. The absorption features in visible band of mineral is analyzed in order to identify mineral on lunar surface. As a weathering product of lunar rock, the compositions of lunar soil consist of diagenetic minerals, such as plagioclase and vulcanite, and so on. Bi-directional reflectance of single minerals is studied in this thesis, affected by composition, surface physical poperty and so on. Using Fileldspec 3 of ASD Company to measure spectra of anorthose and clinopyroxene ranging from 350 to 2500nm, bi-directional reflectance with different grain size are measured. Meantime, the result shows a remarkable bi-directional reflectance character. The hot spot is occurred in azimuth angle 0°or 180°. The reflectance increased when the particle size is decrease. The study on hi-reflectance make it possible to select geometric observation for improve the accuracy of lunar surface exploration.

关 键 词：斜长石 单斜辉石 二向性反射 光谱特征 月球表面 

分 类 号：P184.5[天文地球—天文学]