Latitudinal distribution of temporary liquid cryobrines on Mars

► Brines can temporarily liquefy on Mars by uptake of atmospheric water (deliquescence). ► This liquefaction process is most effective in the cooler dusk to dawn hours. ► Best conditions for liquid brines to evolve are around spring. ► The conditions for temporary liquefaction increase with latitude...

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Bibliographic Details
Published in:Icarus (New York, N.Y. 1962) N.Y. 1962), 2011-07, Vol.214 (1), p.236-239
Main Author: Mohlmann, Diedrich Theodor F
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Liquid water
Mars
Mars, Surface
Sciences of the Universe
Solar system
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Summary:► Brines can temporarily liquefy on Mars by uptake of atmospheric water (deliquescence). ► This liquefaction process is most effective in the cooler dusk to dawn hours. ► Best conditions for liquid brines to evolve are around spring. ► The conditions for temporary liquefaction increase with latitude. Simulations of the surface temperature and atmospheric humidity with a modern Mars climate model (MCD) and with Phoenix data are used to study the conditions for a liquefaction of brines as a function of latitude and season. The results show that, in the presence of appropriate salts, liquid cryobrines can in course of the diurnal cycle temporarily evolve at high latitudes on Mars’ current climate. The conditions for the liquefaction of “Mars-relevant” cryobrines and time and duration of their stability during the diurnal cycle are calculated for northern spring and for the Phoenix landing site.
ISSN:0019-1035
1090-2643
DOI:10.1016/j.icarus.2011.05.006