DOI: 10.1002/2015GL063200
论文题名: Spillage of lunar polar crater volatiles onto adjacent terrains: The case for dynamic processes
作者: Farrell W.M. ; Hurley D.M. ; Zimmerman M.I.
刊名: Geophysical Research Letters
ISSN: 0094-9427
EISSN: 1944-9158
出版年: 2015
卷: 42, 期: 9 起始页码: 3160
结束页码: 3165
语种: 英语
英文关键词: craters
; Moon
; volatiles
; water
Scopus关键词: Floors
; Water
; Craters
; Dynamic equilibria
; Dynamic process
; Solar wind plasmas
; Space environment
; Topside region
; Volatile contents
; Volatiles
; Moon
; crater
; Moon
; vaporization
; volatile substance
英文摘要: We present an investigation of the release and transport of lunar polar crater volatiles onto topside regions surrounding the cold traps. The volatiles are liberated via surface energization processes associated with the harsh space environment, including solar wind plasma sputtering and impact vaporization. We find that some fraction of these volatiles can migrate from crater floors onto topside regions (those regions directly adjacent to and above the polar crater floors), and that these surrounding terrains should contain a sampling of the material originating within the crater itself. It is concluded that the nature of the volatile content on crater floors can be obtained by sampling the surface volatiles that have migrated or "spilled out" onto the adjacent terrain. This "spillage" effect could make human or robotic prospecting for crater resources significantly easier, since an assessment may not require direct entry into the very harsh polar crater environment. We also suggest that there are dynamic processes actively operating on the crater floors, and we estimate their source rates assuming dynamic equilibrium of the observed water frost and our modeled loss rates. Key Points The space environment activates the volatile-rich surfaces in polar craters Impact vaporization and sputtering can release volatiles to surrounding regions To maintain observed water frost, there has to be some source to offset loss ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930478754&doi=10.1002%2f2015GL063200&partnerID=40&md5=6a2afd45b5482938b1ba7186c30e0303
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9042
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: NASA/Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Farrell W.M.,Hurley D.M.,Zimmerman M.I.. Spillage of lunar polar crater volatiles onto adjacent terrains: The case for dynamic processes[J]. Geophysical Research Letters,2015-01-01,42(9).