气候变化领域集成服务门户(CCPortal): Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts

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DOI	10.1038/s41561-019-0345-3
	Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts
	Benna M.; Hurley D.M.; Stubbs T.J.; Mahaffy P.R.; Elphic R.C.
发表日期	2019
ISSN	17520894
卷号	12 期号:5
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. © 2019, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
语种	英语
scopus关键词	hydration; lunar soil; meteorite; Moon; spectrometer
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124674
作者单位	NASA Goddard Space Flight Center, Greenbelt, MD, United States; CSST, University of Maryland, Baltimore County, Baltimore, MD, United States; The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States; NASA Ames Research Center, Moffett Field, CA, United States
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],2019,12(5).
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).
MLA	Benna M.,et al."Lunar soil hydration constrained by exospheric water liberated by meteoroid impacts".Nature Geoscience 12.5(2019).