嫦娥五号等着陆区的月壤微波热辐射特性及地质意义分析  

Analyzing the microwave thermal emission features of lunar regolith in Chang’E landing sites and its geologic significance

作　　者：孟治国[1,2] 唐天琦 董学纲[1,2] 常文清 邹猛 张洪波 王明常 蔡占川[2] 平劲松[4,5] 郑永春[4] 张渊智[4,5] GUSEV Alexander MENG ZhiGuo;TANG TianQi;DONG XueGang;CHANG WenQing;ZOU Meng;ZHANG HongBo;WANG MingChang;CAI ZhanChuan;PING JinSong;ZHENG YongChun;ZHANG YuanZhi;GUSEV Alexander(College of Geoexploration Science and Technology,Jilin University,Changchun 130026,China;State Key Laboratory of Lunar and Planetary Sciences,Macao University of Science and Technology,Macao 999078,China;Key Lab of Bionic Engineering(Ministry of Education),Jilin University,Changchun 130022,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Geology,Kazan Federal University,Kazan 420008,Russia)

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]澳门科技大学月球与行星科学国家重点实验室,中国澳门999078 [3]吉林大学工程仿生教育部重点实验室,长春130022 [4]中国科学院国家天文台,北京100101 [5]中国科学院大学天文与空间科学学院,北京100049 [6]喀山联邦大学地质学院,喀山420008,俄罗斯

出　　处：《中国科学：物理学、力学、天文学》2023年第3期101-117,共17页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家重点研发计划(编号:2021YFA0715104);国家自然科学基金(编号:42071309);月球与行星科学国家重点实验室开放课题(澳门科技大学)(澳门FDCT编号:119/2017/A3);澳门科学技术发展基金(编号:0059/2020/A2);吉林省自然科学基金(编号:20220101159JC)资助项目

摘　　要：嫦娥三、四和五号的原位月壤探测为基于嫦娥一、二号卫星微波辐射计数据的月球科学研究提供了重要参考.本文基于嫦娥二号卫星微波辐射计数据,生成了着陆区亮温图;为了消除亮温随纬度变化的影响,突出亮温与月壤成分之间的关系,定义和制作了规则亮温图和亮温差图;基于Kaguya MI数据,制作了研究区氧化亚铁、氧化钛、单斜辉石和橄榄石含量图;结合原位月壤探测成果,系统分析了嫦娥三、四和五号着陆区月壤的微波热辐射特性.主要研究发现包括以下三点:(1)嫦娥五号着陆区具有稳定的亮温表现,表明该地区月壤成分随深度的变化不明显,可以作为微波热辐射异常研究的重要参考;(2)嫦娥三号着陆区微波数据探测范围内月壤存在分层结构,以低频数据为代表的深层、以高频数据探测为代表的浅层和以可见光成果为代表的表层,成分变化很大;(3)在嫦娥四号着陆区发现并提出了微波冷异常的存在,并初步分析了微波冷异常的成因机制.研究发现,微波辐射计数据可用于月海玄武岩的识别,可以为深化未来的月海岩浆演化研究提供重要的科学参考.The in situ lunar regolith explorations of Chang’E 3,4,and 5 landing sites provide an essential reference for lunar research based on microwave radiometer(MRM)data from Chang’E 1 and 2 satellites.To eliminate the influence of the brightness temperature with latitude and highlight the relationship between the brightness temperature and the lunar regolith composition,the normalized brightness temperature and the brightness temperature difference maps were defined and produced.Based on Kaguya MI data,FeO,TiO2,clinopyroxene,and olivine abundances of Chang’E 3,4,and 5 landing sites were calculated.Combined with the in situ exploration results,the microwave thermal emission properties of the regolith in Chang’E 3,4,and 5 landing regions were systematically analyzed.The main findings are as follows:(1)the Chang’E 5 landing region has a stable brightness temperature performance,indicating that the variation of the lunar regolith composition with depth is insignificant in this area,which can be used as an essential reference for microwave thermal radiation anomaly research.(2)A stratified structure exists within the lunar regolith detection range of the Chang’E 3 landing region.With the lower,middle,and upper layers represented by the low-frequency data,highfrequency data,and optical results,respectively,the composition significantly changes.(3)Cold microwave anomalies were found and proposed in the Chang’E 4 landing region,and its nature and formation were preliminarily analyzed.The results show that microwave radiometer data can be used for identifying mare basalt,which can provide an important scientific reference for deepening future studies on the evolution of lunar mare magma.

关 键 词：嫦娥计划 月壤原位探测 微波辐射计 微波热辐射特性 岩浆演化 微波冷异常 

分 类 号：V476.3[航空宇航科学与技术—飞行器设计] P184.5[天文地球—天文学]