Space weathering of the Moon from in situ detection
文献类型：期刊论文
| 作者 | Wu, Yun-Zhao1,2,3 ; Wang, Zhen-Chao4; Lu, Yu5,6
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 19期号:4页码:10 |
| ISSN号 | 1674-4527 |
| 关键词 | Moon evolution spectroscopic data analysis |
| DOI | 10.1088/1674-4527/19/4/51 |
| 通讯作者 | Wu, Yun-Zhao(wu@pmo.ac.cn) |
| 英文摘要 | Space weathering is an important surface process that occurs on the Moon and other airless bodies, especially those that have no magnetic field. The optical effects of the Moon's space weathering have largely been investigated in the laboratory for lunar samples and lunar analogues. However, duplication of pristine regolith on Earth is not possible. Here we report on space weathering from the unique perspective of the "Yutu" rover, which was part of the Chang'e-3 (CE-3) mission, building on our previous work. Measurement of the visually undisturbed uppermost regolith as well as locations that have been affected by rocket exhaust from the spacecraft by the Visible-Near Infrared Spectrometer (VNIS) revealed that the returned samples provide biased information about the pristine lunar regolith. The uppermost surficial regolith is much more weathered than the regolith immediately below, and the finest fraction is rich in space weathered products. These materials are very dark and attenuated throughout the visible and near-infrared (VNIR) wavelengths, hence reducing the reflectance and masking the absorption features. The effects on the spectral slope caused by space weathering are wavelength-dependent: the visible and near-infrared continuum slope (VNCS) increases while the visible slope (VS) decreases. In the visible wavelengths, the optical effects of space weathering and TiO2 are identical: both reduce albedo and blue the spectra. This suggests that a new TiO2 abundance algorithm is needed. Optical maturity indices are related to composition and hence only locally meaningful. Since optical remote sensing can only sense the uppermost few microns of regolith and since this surface tends to be very weathered, the interpretation of surface composition using optical remote sensing data needs to be carefully evaluated. Sampling the uppermost surface is suggested. |
| WOS关键词 | LUNAR SOILS ; REFLECTANCE ; CALIBRATION ; IMBRIUM ; GEOLOGY ; IRON |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:000463893700003 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/24459]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Wu, Yun-Zhao |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210034, Jiangsu, Peoples R China 2.Macau Univ Sci & Technol, Space Sci Inst, Macau, Peoples R China 3.CAS Ctr Excellence Comparat Planetol, Beijing, Peoples R China 4.Nanjing Univ, Inst Surficial Geochem, Dept Earth Sci, Nanjing 210023, Jiangsu, Peoples R China 5.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China 6.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yun-Zhao,Wang, Zhen-Chao,Lu, Yu. Space weathering of the Moon from in situ detection[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(4):10. |
| APA | Wu, Yun-Zhao,Wang, Zhen-Chao,&Lu, Yu.(2019).Space weathering of the Moon from in situ detection.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(4),10. |
| MLA | Wu, Yun-Zhao,et al."Space weathering of the Moon from in situ detection".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.4(2019):10. |
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来源：紫金山天文台
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