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Mariner ultraviolet spectrometer: topography and polar cap
Mars
Area of Science:
- Planetary Science
- Atmospheric Science
- Geology
Background:
- Mars's ultraviolet light reflection originates from its atmosphere, not its surface.
- Atmospheric scatterers and molecular scatterers influence light reflection intensity.
Purpose of the Study:
- To investigate the relationship between atmospheric pressure and scattered radiation intensity on Mars.
- To correlate atmospheric pressure variations with Martian topography and visible features.
- To explore the role of the carbon dioxide polar cap as a potential gas repository.
Main Methods:
- Relating scattered radiation intensity to atmospheric pressure.
- Analyzing pressure variations to infer topographical changes.
- Investigating the adsorption properties of the Martian polar cap.
Main Results:
- Atmospheric pressure variations correlate with topographical differences up to 7 kilometers.
- Martian topography is linked to observable surface features.
- The carbon dioxide polar cap acts as a cold and adsorption trap for volatile and non-volatile gases.
Conclusions:
- Martian atmospheric pressure is a key indicator of surface topography.
- The polar cap may preserve evidence of geological or biological activity through gas adsorption.
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