Master Thesis Online
Effects of the meteorite and comet impacts on the degassing of volatile contained in martian heterogeneous regolith
Piette, Aurélien 
Promotor(s) :
Dehant, Véronique
;
Jehin, Emmanuel
Date of defense : 6-Sep-2021/7-Sep-2021 • Permalink : http://hdl.handle.net/2268.2/12754
s197457Piette2021.pdfDetails
| Title : | Effects of the meteorite and comet impacts on the degassing of volatile contained in martian heterogeneous regolith |
| Translated title : | [fr] Effet des impacts de comètes et de météorites sur le dégazage de volatile contenu dans la régolithe hétérogène de Mars |
| Author : | Piette, Aurélien
|
| Date of defense : | 6-Sep-2021/7-Sep-2021 |
| Advisor(s) : | Dehant, Véronique
Jehin, Emmanuel
|
| Committee's member(s) : | Karatekin, Ozgur
Bonfond, Bertrand
Javaux, Emmanuelle
|
| Language : | English |
| Number of pages : | 69 |
| Keywords : | [en] Mars [en] Impacts [en] methane [en] Regolith [en] model |
| Discipline(s) : | Physical, chemical, mathematical & earth Sciences > Space science, astronomy & astrophysics |
| Research unit : | Royal Observatory of Belgium |
| Target public : | Researchers Professionals of domain Student General public |
| Institution(s) : | Université de Liège, Liège, Belgique |
| Degree: | Master en sciences spatiales, à finalité spécialisée |
| Faculty: | Master thesis of the Faculté des Sciences |
Abstract
[en] The goal of this master’s thesis iw to better understand Mars and its complex processes and more specifcally to understand if the heterogeneity of the martian regolith may impact the degassing of volatile due to small impactors.To do so the increase of temperature as a result of impact energy is theoretically and numerically investigated. A modelisation of the increase of impact-induced temperature is proposed with an analytcial method : the Murnaghan equation of state.Then a comparison with a hydrocode (numerical method) is considered. To study the environmental effect, the evolution of the temperature following an impact for a martian year is calculated using the Crank-Nicholson method. The effect of the heterogeneity of the martian subsurface is then studied with the use of different plausible scenarii of different locations of interest on Mars. Finally, the results for each scenarii are compared with the depth of the ice table or the clathrate stability zone to assess its destabilization and thus degassing of methane.
File(s)
Document(s)
Cite this master thesis
The University of Liège does not guarantee the scientific quality of these students' works or the accuracy of all the information they contain.