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Faculté des Sciences appliquées
Faculté des Sciences appliquées
MASTER THESIS
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Simulation of martian surface conditions with the MarsWRF GCM to assess the deliquescence potential of particular regions on Mars

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Link, Lola ULiège
Promotor(s) : Dehant, Véronique ; Karatekin, Ozgur
Date of defense : 6-Sep-2021/7-Sep-2021 • Permalink : http://hdl.handle.net/2268.2/13173
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Title : Simulation of martian surface conditions with the MarsWRF GCM to assess the deliquescence potential of particular regions on Mars
Translated title : [fr] Simulation des conditions de surface martiennes avec le MarsWRF MCG afin d'évaluer le potentiel de déliquescence de certaines régions de Mars
Author : Link, Lola ULiège
Date of defense  : 6-Sep-2021/7-Sep-2021
Advisor(s) : Dehant, Véronique 
Karatekin, Ozgur 
Committee's member(s) : Loicq, Jerôme ULiège
Gloesener, Elodie 
Temel, Orkun 
Language : English
Number of pages : 76
Keywords : [en] brine
[en] deliquescence
[en] Mars
[en] water
Discipline(s) : Physical, chemical, mathematical & earth Sciences > Space science, astronomy & astrophysics
Research unit : Observatoire royal de Belgique
Target public : Researchers
Professionals of domain
Student
General public
Institution(s) : Université de Liège, Liège, Belgique
Degree: Master en ingénieur civil en aérospatiale, à finalité spécialisée en "aerospace engineering"
Faculty: Master thesis of the Faculté des Sciences appliquées

Abstract

[en] The objective of this work is to establish the Martian regions whose surface conditions are favourable to the deliquescence of salt. This process allows the formation of salt water (a brine) in which life can, under certain conditions, develop. A global scale modelling (MarsWRF Global Circulation Model) is performed to acquire the surface conditions. First, diurnal and seasonal variations for the entire planet are analysed. This shows that the areas meeting the conditions are mainly in the Northern Hemisphere in summer, between 50°N and 50°S in spring and autumn and mainly around the equator in winter. Then, some interesting locations were investigated in more detail. On the one hand, landing sites and on the other, sites where the absorption spectrum revealed the presence of salts. What emerges primarily from this study is that calcium perchlorate is the most likely salt to deliquesce under Martian conditions. For sites located at high latitudes, they can host brines in the first half of the year. Mid-latitude sites in the north allow salt deliquescence throughout the year but the maximum number of hours for which conditions are satisfied is about ten hours around the winter solstice. The same is true for locations near the equator but a hollow period is visible during the autumn and the maximum number of consecutive hours encountering the conditions is lower. In the Southern Hemisphere, only Hale Crater showed surface conditions favourable for the deliquescence of calcium perchlorate. To conclude, many locations have surface conditions allowing salts deliquescence for a determined interval of consecutive hours, but this study does not establish whether during this time brines form and remain stable.


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Author

  • Link, Lola ULiège Université de Liège > Master ingé. civ. aérospat., à fin.

Promotor(s)

Committee's member(s)

  • Loicq, Jerôme ULiège Université de Liège - ULiège > Département d'aérospatiale et mécanique > Conception d'expériences spatiales
    ORBi View his publications on ORBi
  • Gloesener, Elodie ORB
  • Temel, Orkun ORB
  • Total number of views 37
  • Total number of downloads 44










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