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DOI | 10.1038/s41561-019-0345-3 |
Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts | |
Benna, M.1,2; Hurley, D. M.3; Stubbs, T. J.1; Mahaffy, P. R.1; Elphic, R. C.4 | |
2019-05-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:5页码:333-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Analyses of samples from the Apollo missions suggest that the Moon formed devoid of native water. However, recent observations by Cassini, Deep Impact, Lunar Prospector and Chandrayaan-1 indicate the existence of an active water cycle on the Moon. Here we report observations of this water cycle, specifically detections of near-surface water released into the lunar exosphere by the Neutral Mass Spectrometer on the Lunar Atmosphere and Dust Environment Explorer. The timing of 29 water releases is associated with the Moon encountering known meteoroid streams. The intensities of these releases reflect the convoluted effects of the flux, velocity and impact location of the parent streams. We propose that four additional detected water releases represent the signature of previously undiscovered meteoroid streams. We show that water release from meteoroid impacts is indicative of a lunar surface that has a desiccated soil layer of several centimetres on top of uniformly hydrated soil. We infer that the Moon is currently in the process of losing water that was either delivered long ago or present at its formation. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467814100007 |
WOS关键词 | MOON ; ICE ; VARIABILITY ; ATMOSPHERE ; DETECTOR ; SURFACE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183085 |
专题 | 地球科学 气候变化 |
作者单位 | 1.NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 2.Univ Maryland Baltimore Cty, CSST, Baltimore, MD 21228 USA; 3.Johns Hopkins Univ, Appl Phys Lab, Laurel, MD USA; 4.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA |
推荐引用方式 GB/T 7714 | Benna, M.,Hurley, D. M.,Stubbs, T. J.,et al. Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts[J]. NATURE GEOSCIENCE,2019,12(5):333-+. |
APA | Benna, M.,Hurley, D. M.,Stubbs, T. J.,Mahaffy, P. R.,&Elphic, R. C..(2019).Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts.NATURE GEOSCIENCE,12(5),333-+. |
MLA | Benna, M.,et al."Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts".NATURE GEOSCIENCE 12.5(2019):333-+. |
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