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New Insight Into Lunar Regolith-Forming Processes by the Lunar Rover Yutu-2
Lin, Honglei1; Lin, Yangting1; Yang, Wei1; He, Zhiping2; Hu, Sen1; Wei, Yong1; Xu, Rui2; Zhang, Jinhai1; Liu, Xiaohui3; Yang, Jianfeng4; Xing, Yan5; Yu, Chengwu5; Zou, Yongliao6
作者部门月球与深空探测技术研究室
2020-07-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276;1944-8007
卷号47期号:14
产权排序4
摘要

The Yutu-2 rover of the Chang'E-4 spacecraft observed many meter-sized shallow pits fully covered with small fragments, distinct from the typical rock-free impact craters with comparable sizes in the landing area. The unique morphology of the pits and the visible and near-infrared spectra of the fragments suggest that the fragments are broken pieces of impact melt-conglutinated regolith breccia projectiles, which were excavated from preexisting craters. The rareness of rock on the landing area surface suggests that the preexisting craters were probably small in size (e.g., <60 m in diameter), not large enough to penetrate the thick regolith (similar to 12 m) and to excavate the beneath rock breccia and/or bedrock. The presence of the impact melts was confirmed by the glass-like spectra of some fragments with unusually high albedo and blue-green tint in the centers of the pits. These observations reveal the gardening and consolidating processes on the Moon. Plain Language Summary There are very rare outcrops of bedrock on the lunar surface because the Moon is covered by the lunar regolith. The detailed formation processes of the lunar regolith are important for understanding the orbiting and landing exploration data, and for planning future sample return missions. The lunar rover Yutu-2 discovered fragment-filled pits and identified in situ impact glass in the fragments. The glass-bearing and regolith-like fragments were probably broken pieces of lunar regolith breccia projectiles, which were excavated from the consolidated bottom and walls of preexisting small craters within the lunar regolith (<12-15 m in thickness). These observations contribute to our understanding of the formation processes of the lunar regolith.

DOI10.1029/2020GL087949
收录类别SCI
语种英语
WOS记录号WOS:000556707300035
出版者AMER GEOPHYSICAL UNION
引用统计
被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/93638
专题月球与深空探测技术研究室
通讯作者Lin, Yangting
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai, Peoples R China
3.Beijing Aerosp Control Ctr, Beijing, Peoples R China
4.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Peoples R China
5.Beijing Inst Control Engn, Beijing, Peoples R China
6.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Lin, Honglei,Lin, Yangting,Yang, Wei,et al. New Insight Into Lunar Regolith-Forming Processes by the Lunar Rover Yutu-2[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(14).
APA Lin, Honglei.,Lin, Yangting.,Yang, Wei.,He, Zhiping.,Hu, Sen.,...&Zou, Yongliao.(2020).New Insight Into Lunar Regolith-Forming Processes by the Lunar Rover Yutu-2.GEOPHYSICAL RESEARCH LETTERS,47(14).
MLA Lin, Honglei,et al."New Insight Into Lunar Regolith-Forming Processes by the Lunar Rover Yutu-2".GEOPHYSICAL RESEARCH LETTERS 47.14(2020).
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