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dc.contributor.advisorLeuschen, Carl
dc.contributor.advisorTsoflias, George
dc.contributor.authorCheng, Kwan Yee
dc.date.accessioned2011-06-21T19:19:09Z
dc.date.available2011-06-21T19:19:09Z
dc.date.issued2011-03-08
dc.date.submitted2011
dc.identifier.otherhttp://dissertations.umi.com/ku:11321
dc.identifier.urihttp://hdl.handle.net/1808/7667
dc.description.abstractUsing an orbital-based ground-penetrating radar - SHARAD proves to be an effective method for imaging the Martian surface and subsurface layering at the south polar layered deposit. This investigation focuses on examining whether seasonal variation of CO2 thickness on the surface caused by accumulation during winter and sublimation during summer could be observed for the first time by analyzing SHARAD data. Travel time and amplitude analysis between the Martian surface reflection and a reference reflection in the subsurface were conducted on multiple orbital tracks corresponding to varying seasons. Results from the travel time analysis along all four cross-lines show that the average change in CO2 frost thickness ranged from 6.80 m to 9.58 m assuming a medium dielectric constant between 2.12 and 2.77. The CO2 thickness reaches its maximum during winter and minimum during summer likely because of the CO2 frost accumulation and retreat, respectively. This observation agrees with other studies. However, the magnitude of change in CO2 thickness estimated in this study is greater than values reported previously. This difference is attributed to the different locations of the Martian polar region examined in the various studies. Amplitude analysis does not show any relationship to seasonal variations on the Martian surface.
dc.format.extent137 pages
dc.language.isoen
dc.publisherUniversity of Kansas
dc.rightsThis item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
dc.subjectGeophysics
dc.subjectRemote sensing
dc.subjectMars
dc.subjectRadar
dc.subjectSeasonal variation
dc.subjectSharad
dc.subjectSouth polar ice cap
dc.subjectSubsurface
dc.titleInvestigation of Radar Subsurface Sounding through Seasonal Cycles Collected by Mars Shallow Radar (SHARAD) in the South Polar Area
dc.typeThesis
dc.contributor.cmtememberWalker, J. Douglas
dc.thesis.degreeDisciplineGeology
dc.thesis.degreeLevelM.S.
kusw.oastatusna
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
kusw.bibid7642837
dc.rights.accessrightsopenAccess


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