DOI: 10.1002/2015GL067293
论文题名: Synodic and semiannual oscillations of argon-40 in the lunar exosphere
作者: Hodges R.R. ; Jr. ; Mahaffy P.R.
刊名: Geophysical Research Letters
ISSN: 0094-9488
EISSN: 1944-9219
出版年: 2016
卷: 43, 期: 1 起始页码: 22
结束页码: 27
语种: 英语
英文关键词: argon-40
; exosphere
; LADEE
; Moon
Scopus关键词: Lunar surface analysis
; Moon
; Desorption process
; Dust environment
; Exosphere
; High-quality measurements
; LADEE
; Lunar atmospheres
; Semiannual oscillations
; Sorption properties
; Ionosphere
; adsorption
; annual variation
; argon isotope
; climate oscillation
; data set
; desorption
; Moon
; regolith
; solar system
; spacecraft
英文摘要: The neutral mass spectrometer on the Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft collected a trove of exospheric data, including a set of high-quality measurements of radiogenic 40Ar over a period of 142 days. Data synthesis studies, using well-established exosphere simulation tools, show that the LADEE argon data are consistent with an exosphere-regolith interaction that is dominated by adsorption and that the desorption process generates the Armand distribution of exit velocities. The synthesis work has uncovered an apparent semiannual oscillation of argon that is consistent with temporal sequestration in the seasonal cold traps created at the poles by the obliquity of the Moon. In addition, the LADEE data provide new insight into the pristine nature of lunar regolith, its spatially varying sorption properties, and the influence of sorption processes on the synodic oscillation of the argon exosphere. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970910124&doi=10.1002%2f2015GL067293&partnerID=40&md5=a7ea99ee1276e055c6bc59b834243bfc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10451
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
Recommended Citation:
Hodges R.R.,Jr.,Mahaffy P.R.. Synodic and semiannual oscillations of argon-40 in the lunar exosphere[J]. Geophysical Research Letters,2016-01-01,43(1).