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#1 2003-11-03 23:28:50

Hazer
Member
From: Texas/Oklahoma
Registered: 2003-10-26
Posts: 173

Re: Valleys - What about canyons?

I have read that the atmospheric pressure on Mars is extremely low at "Sea level."  I wonder, what would the pressure be at the bottom of say-the Valles Marinas (I think thats how its spelt)


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I am a firm supporter of stepping out into this great universe both armed and dangerous.

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#2 2003-11-04 05:55:25

Byron
Member
From: Florida, USA
Registered: 2002-05-16
Posts: 844

Re: Valleys - What about canyons?

Check out this fun little site: Air Pressure Calculator

All you have to do is to enter the pressure at "sea level," which is generally .007 (seven millibars), and enter .38 for the gravity, and then your altitude in meters.  By entering -5000 meters, which is the approximate elevation of Mariner Valley (I'm not too fond of Latin names...lol), and you'll get the equivalent air pressure for that altitude, which is almost 30% greater than at sea level.

Hope this helps!

B

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#3 2003-11-05 01:45:32

Shaun Barrett
Member
From: Cairns, Queensland, Australia
Registered: 2001-12-28
Posts: 2,843

Re: Valleys - What about canyons?

Hi Hazer!
    Byron's pressure calculator is great fun to play with.
    The actual situation on Mars varies a bit, though, due to the CO2 freezing and subliming on a seasonal basis.
    I read somewhere that at the deepest part of Hellas Basin, the pressure gets up to 12.4 millibars at times.
    Just thought I'd throw that in!
                                                   smile


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