干旱区生态环境知识资源中心(Arid): Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars

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DOI	10.7306/gq.1559
	Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars - data from the High Andes
	Kereszturi, Akos; Pal, Bernadett; Gyenis, Akos
通讯作者	Kereszturi, A (corresponding author), MTA Ctr Excellence, Res Ctr Astron & Earth Sci, Konkoly Thege Astron Inst, Konkoly Thege 15-17, H-1121 Budapest, Hungary.
来源期刊	GEOLOGICAL QUARTERLY
ISSN	1641-7291
EISSN	2082-5099
出版年	2020
卷号	64 期号:4 页码:898-914
英文摘要	During an al most two week-long field campaign in the Atacama Desert high altitude region of Ojos del Salado vol cano, temperature (T) and relative humidity (RH) values were monitored on the surface and <1-5 cm sized rocks, focusing on the night-time values. The aim was to identify and evaluate potential temporal char acteristics of daily T and RH changes, searching for ideal periods for deliquescence that has recently been proposed for Mars. Although the atmospheric pressure on Mars is much lower than on Earth, and the atmosphere is drier in general, the huge daily temperature fluctua tion there could produce elevated hu midity values at night-time; this aspect has thus been analysed on Earth at a desert location, where because of the high elevation night-time cooling is very strong, just like on Mars. Different nearby surface locations showed the same tem poral T/RH characteristics, but ev ident variations were observed between different days. Strong fluc tuations could be observed on 10-20 minute long temporal scales, that might in fluence the deliquescence process, and should be accounted for in future missions aiming to analyse this process on Mars. Night-time periods were favourable for deliques cence. Among the mod elled Mars-rel evant salts [CaCl2, Ca(ClO4)(2), Mg(ClO4)(2), NaCl] the longest durations of possible deliquescence were for CaCl2, Ca(ClO4)(2) and Mg(ClO4)(2), similar to 7-12 hours for one day. The duration for del iquescence showed some increase along with the ris ing elevation, due to the decreasing night-time temperature. Thus despite the low humidity on Mars, the cold nights may cause elevated RH towards deliquescence. The Atacama Desert locations analysed are a useful an alogue of the deliquescence process on Mars. Fluctua tion in RH was observed in night-time, sug gesting that similar variabil ity might be present on Mars, and that should be considered in the fu ture, including in evaluating how fast the microscopic liquid formation progresses. Night-time slope winds expected on Mars might have a strong impact on the local T/RH conditions. A more detailed analysis in the future should focus on identi fying and separating regions with and without much of the expected night-time fluctuation.
英文关键词	deliquescence humidity high mountain Mars Mars analogue
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000603993900005
WOS关键词	AQUEOUS-SOLUTIONS RELEVANT ; RECURRING SLOPE LINEAE ; LIQUID WATER ; ATACAMA DESERT ; ARID ANDES ; PERCHLORATE ; SURFACE ; CHILE ; SALTS ; CRATER
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348883
作者单位	[Kereszturi, Akos; Pal, Bernadett] MTA Ctr Excellence, Res Ctr Astron & Earth Sci, Konkoly Thege Astron Inst, Konkoly Thege 15-17, H-1121 Budapest, Hungary; [Kereszturi, Akos] European Astrobiol Inst, Virtual Inst, Strasbourg, France; [Gyenis, Akos] Korall Print Bt, Dr Majorossy 43, H-7625 Pecs, Hungary; [Gyenis, Akos] Budapest Inst Technol & Econ, Muegyet Rkp 3, H-1111 Budapest, Hungary
推荐引用方式 GB/T 7714	Kereszturi, Akos,Pal, Bernadett,Gyenis, Akos. Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars - data from the High Andes[J],2020,64(4):898-914.
APA	Kereszturi, Akos,Pal, Bernadett,&Gyenis, Akos.(2020).Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars - data from the High Andes.GEOLOGICAL QUARTERLY,64(4),898-914.
MLA	Kereszturi, Akos,et al."Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars - data from the High Andes".GEOLOGICAL QUARTERLY 64.4(2020):898-914.