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A sublimation model for the martian polar swiss-cheese features. observational and modeling studies of the south polar residual cap
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ingersoll, Andrew P. Byrne, Shane |
| Copyright Year | 2002 |
| Description | In their pioneering work Leighton and Murray argued that the Mars atmosphere, which is 95 percent CO2 today, is controlled by vapor equilibrium with a much larger polar reservoir of solid CO2. Here we argue that the polar reservoir is small and cannot function as a long-term buffer to the more massive atmosphere. Our work is based on modeling the circular depressions (Swiss-cheese features) in the south polar cap. We argue that a solid CO2 layer approximately 8 meters thick is being etched away to reveal water ice underneath. Preliminary results from the THEMIS (Thermal Emission Imaging System) instrument seem to confirm our model. |
| File Size | 530926 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20020088723 |
| Archival Resource Key | ark:/13960/t3fz27d1t |
| Language | English |
| Publisher Date | 2002-11-04 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Science And Exploration Liquid-vapor Equilibrium Gas-solid Interfaces Planetary Geology Atmospheric Models Mars Planet Carbon Dioxide Polar Caps Imaging Techniques Mars Surface Ice Mars Atmosphere Remote Sensing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
