Valles Marineris Pressure

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PostPosted: August 26, 2012 11:31 PM 

Would the atmospheric pressure deep within Valles Marineris be dense enough to make the existence of liquid water more likely....on hot sunny Martian days?


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PostPosted: September 5, 2012 9:30 PM 

That's a good question. The triple point for water is listed at 0.0886 psi. At the bottom of Hellas Planitia (similar to Valles Marineris?), the atmospheric pressure is listed as being 0.168 psi, so there would be an interval during the day in which water would be in a liquid state.

Summer temps can go up to 70 degrees Fahrenheit.




Jack Finche

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PostPosted: January 14, 2013 12:04 PM 

If atmospheric pressure is substantially higher at the bottom of Valles Marinaris than on the Martian surface (e.g. the planitia)it would make sense that this would be one of the best places for an initial colonization attempt. First, fluids are not going to boil away instantly and liquid water may exist in a liquid state for some period; Second, the colony will have enhanced protection (reduced exposure) from daily low-angle cosmic radiation, Third, weather conditions will be somewhat more stable as the canyon's base would not necessarily be prey to the dust storms sweeping across the surface; Fourth, if liquid water can exist at the base of the canyon, it probably has existed there for some time, and this would be an excellent place to look for residual Martian lifeforms.

Art Priebe

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PostPosted: October 12, 2013 3:30 PM 

It seems feasible to create a large artificial environment on Earth, probably at the highest elevation possible (Himalayas??), like a large sealed sphere, and get healthy male and female adult volunteers to commit to living out their lives there, and while training them in Martian survival techniques, gradually lower the atmospheric pressure and the temperature inside the sphere, while constantly monitoring their bodily responses so as not to exceed the adaptability rates of their bodies. At the same time, the cosmic and gamma and other solar rays from which Mars' atmosphere affords little protection, would be gradually increased, again staying within their bodies' ability to adapt and to develop defensive properties.

This process would probably take 3 or 4 generations, as the volunteers would certainly have offspring in this pseudo-Martian environment, and those children in turn would have offspring, until about 80 years down the line, a generation of (hopefully) physically and psychologically healthy people would come into being who would require only minimal, if any, life-support systems on the actual planet Mars. THEN we could send mankind to Mars to colonize and explore. Waddaya think, people?

John Henry Dough

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PostPosted: October 13, 2013 2:37 PM 

Personally I would think a child born in Mars gravity and raised to an adult,,while having much less muscle tone,,Would have an increased length of life.


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PostPosted: October 29, 2013 1:10 AM 

We already have humans living and working at high altitude. Barrel chested Indians from Peru. Saw a deal in National Geographic, they were mining sulphur on a mountain top in the Andes. Dark blue sky and HARSH sunlight. Hear they have more Hemoglobin than us flatlanders. There IS the problem of oxygen on Mars tho.

Michael Conte

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PostPosted: April 19, 2016 10:08 PM 

I was doing some thinking whilst on the toilet. I cannot remember about what. But the thought arrived to me about the problems faced by Mars landing missions complaining of how hard it is to land on mars due to the necessity of having to traverse the low density atmosphere to wash off enough speed to attempt a soft landing. If however the entry target was into the Valles Marineris, then the mission landing team could take advantage of an additional 5-6 km's of higher density atmosphere to slow the entry and improve the landing trajectory. Just a thought.


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PostPosted: April 20, 2016 9:58 PM 

I'm sure the scientists would love to send a rover to Valles Marineris. I think it is the engineers who are scared the terrain is not flat enough. Perhaps as the landing ellipse is shrunk by advances in precision landing techniques, it may become more feasible.

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