Semi-Empirical Modeling of Radiolytic Production in the Mars Northern Polar Region

Simple item page
dc.contributor.advisorMcElroy, C. Thomas
dc.creatorFeng, Keh-Harng
dc.date.accessioned2016-09-20T16:53:37Z
dc.date.available2016-09-20T16:53:37Z
dc.date.copyright2014-04-11
dc.date.issued2016-09-20
dc.date.updated2016-09-20T16:53:37Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractA model to simulate the radiolytic production of various compounds in the Mars northern polar region was developed. Galactic cosmic rays are used as the source of particle radiation. Particle energy distributions are modeled semi-empirically with the energy deposition inside the ice layers computed using the Stopping and Ranging of Ions in Matter (SRIM) model simulation or a customized Bethe-Bloch formula. The rate of species production is derived from laboratory measurement. Seasonal variations of the ice layers are either obtained from Global Multiscale Mars Model (GM3) results or estimation based on observed quantities. Preliminary results show that for species such as carbon monoxide, as much as 9,000 tons can be released into the atmosphere annually. Without the use of atmospheric transport models, a direct comparison to observations is not possible. As radiolysis can potentially explain the existence of compounds such as methane on Mars, the model warrants further investigation.
dc.identifier.urihttp://hdl.handle.net/10315/32251
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectPhysics
dc.subject.keywordsRadiolysis
dc.subject.keywordsRadiolytic Production
dc.subject.keywordsMars
dc.subject.keywordsPolar Caps
dc.subject.keywordsCosmic Rays
dc.subject.keywordsProtons
dc.subject.keywordsSemi-empirical Modeling
dc.subject.keywordsSimulation
dc.subject.keywordsCO
dc.subject.keywordsMethane
dc.titleSemi-Empirical Modeling of Radiolytic Production in the Mars Northern Polar Region
dc.typeElectronic Thesis or Dissertation

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Feng_Keh-Harng_2014_Masters.pdf
Size:
1.62 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
license.txt
Size:
1.83 KB
Format:
Plain Text
Description:
Download
No Thumbnail Available
Name:
YorkU_ETDlicense.txt
Size:
3.38 KB
Format:
Plain Text
Description:
Download

Collections

Physics and Astronomy

All items in the YorkSpace institutional repository are protected by copyright, with all rights reserved except where explicitly noted.