DOI: 10.1002/2015GL065434
论文题名: Laboratory investigation of perchlorate deliquescence at the surface of Mars with a Raman scattering lidar
作者: Nikolakakos G. ; Whiteway J.A.
刊名: Geophysical Research Letters
ISSN: 0094-8581
EISSN: 1944-8312
出版年: 2015
卷: 42, 期: 19 起始页码: 7899
结束页码: 7906
语种: 英语
英文关键词: atmosphere
; deliquescence
; Mars surface
; perchlorate
; Raman spectroscopy
; water
Scopus关键词: Earth atmosphere
; Inorganic compounds
; Magnesium
; Martian surface analysis
; Raman scattering
; Raman spectroscopy
; Water
; deliquescence
; Eutectic temperature
; Laboratory investigations
; Landing site
; Mars missions
; Mars surfaces
; perchlorate
; Surface of Mars
; Atmospheric temperature
; brine
; freezing
; laboratory method
; lidar
; magnesium
; Mars
; perchlorate
; Raman spectroscopy
; relative humidity
; temperature
; vapor pressure
; water vapor
英文摘要: A sample of magnesium perchlorate hexahydrate was subjected to the water vapor pressure and temperatures found at the landing site of the Phoenix Mars mission. Laser Raman scattering was applied to detect the onset of deliquescence and provide a relative estimate of the quantity of water taken up and subsequently released by the sample. As the temperature of the sample decreased at the same rate as measured on Mars during the evening, significant uptake of water from the atmosphere was observed to occur prior to the frost point temperature being reached. As the temperature was lowered further, the relative humidity over ice increased to 100% and frost formed on the surface surrounding the perchlorate sample. Freezing of the brine film was observed at the eutectic temperature of -67°C, and thawing occurred at a temperature of -62°C. Key Points Magnesium perchlorate hexahydrate was exposed to conditions found at the Mars Phoenix site Deliquescence was detected using Raman scattering at temperatures above the frost point Liquid water brine films can exist for several hours over the course of a solar day on Mars © 2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946962933&doi=10.1002%2f2015GL065434&partnerID=40&md5=c03b56bc379467d85cac8d3364ad10dc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8197
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: Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada
Recommended Citation:
Nikolakakos G.,Whiteway J.A.. Laboratory investigation of perchlorate deliquescence at the surface of Mars with a Raman scattering lidar[J]. Geophysical Research Letters,2015-01-01,42(19).