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基于LOLA数据的Aristarchus高原光照特性初步研究
张吉栋1,2, 孟治国1,2, 平劲松2, 李文潇2, 王明远2, 赵瑞1
1.吉林大学 地球探测科学与技术学院, 长春 130026;2.中国科学院国家天文台 月球与深空探测重点实验室, 北京 100012
摘要:
改进了月面中低纬度地区光照分析算法,以Aristarchus高原(AP)为例,使用LRO卫星获得的高分辨率、高精度的LOLA数据和DE/LE430月球行星历表,同时基于月球天平动模型,定量计算和分析了AP地区的光照特性。结果表明:AP地区的光照率都在0.35以上,平坦地区的光照条件较好,受到地形的影响不同位置的光照率相差很大。光照率最大值点(B)要比最小值点(A)高出30%以上。考虑典型的长周期天平动效应,18.6年光照数据的分析结果表明,每个位置的光照率变化较小且趋于稳定,这对月球表面演化研究是一个重要的参考。
关键词:  月球光照;Aristarchus高原;月球历表
DOI:10.15982/j.issn.2095-7777.2017.02.011
分类号:P184
基金项目:国家自然科学基金项目(41590851,41371332);中国科学院重点部署项目(KGZD-EW-603);中央高校基本科研基金项目(JCKY-QKJC23);澳门科技发展基金项目(110/2014/A3)
Preliminary Study of Illumination Characteristics of Aristarchus Plateau Using LOLA Data
ZHANG Jidong1,2, MENG Zhiguo1,2, PING Jinsong2, LI Wenxiao2, WANG Mingyuan2, ZHAO Rui1
1.College of Geoexploration Science and Technology, Jilin University, Changchun 130026, China;2.Key Laboratory of Lunar and Deep Space Exploration, National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, China
Abstract:
The illumination analysis algorithm at mid-low latitudes is improved. Taking Aristarchus plateau (AP) as an example,the high resolution and high accuracy LOLA data from the LRO satellite and DE/LE430 lunar planetary ephemeris are used to quantitatively calculate and analyze the illumination characteristics of AP based on the Moon's libration model. The results show that the illumination rates of AP area are all over 0.35,and the illumination condition of flat area is good. The illumination rates vary greatly in different regions because of the influence of terrain. The maximum illumination rate is higher than the minimum above 30%. Considering the typical long term libration effects,the results of 18.6 years show that the change of illumination rate is small and stable,which is an important reference for the research on the evolution of the lunar surface.
Key words:  lunar illumination;Aristarchus plateau;lunar ephemeris