How deep a valley or trench would be needed on mars to provide the same atmospheric pressure as 6 km above...











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Atmospheric pressure increases the deeper you go & the highest growing plants on earth have been found at a height of 6 km so how deep a trench would we need on Mars to provide similar air pressure?
World’s highest plants discovered growing 6km above sea level






mars colonization atmosphere terraforming plants







share|improve this question
























  • There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
    – Organic Marble
    5 hours ago










  • That would be a different question, I'm only asking about air pressure in this instance.
    – Pelinore
    5 hours ago












  • Then you need to edit your question and make that clear. You just say "conditions".
    – Organic Marble
    5 hours ago










  • No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
    – Pelinore
    5 hours ago








  • 1




    Edited to clarify. Both of you play nice.
    – Russell Borogove
    4 hours ago

















up vote
1
down vote

favorite












Atmospheric pressure increases the deeper you go & the highest growing plants on earth have been found at a height of 6 km so how deep a trench would we need on Mars to provide similar air pressure?
World’s highest plants discovered growing 6km above sea level






mars colonization atmosphere terraforming plants







share|improve this question
























  • There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
    – Organic Marble
    5 hours ago










  • That would be a different question, I'm only asking about air pressure in this instance.
    – Pelinore
    5 hours ago












  • Then you need to edit your question and make that clear. You just say "conditions".
    – Organic Marble
    5 hours ago










  • No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
    – Pelinore
    5 hours ago








  • 1




    Edited to clarify. Both of you play nice.
    – Russell Borogove
    4 hours ago















up vote
1
down vote

favorite









up vote
1
down vote

favorite











Atmospheric pressure increases the deeper you go & the highest growing plants on earth have been found at a height of 6 km so how deep a trench would we need on Mars to provide similar air pressure?
World’s highest plants discovered growing 6km above sea level






mars colonization atmosphere terraforming plants







share|improve this question















Atmospheric pressure increases the deeper you go & the highest growing plants on earth have been found at a height of 6 km so how deep a trench would we need on Mars to provide similar air pressure?
World’s highest plants discovered growing 6km above sea level






mars colonization atmosphere terraforming plants




mars colonization atmosphere terraforming plants






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 4 hours ago









Russell Borogove

78.4k2256340




78.4k2256340










asked 5 hours ago









Pelinore

1314




1314












  • There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
    – Organic Marble
    5 hours ago










  • That would be a different question, I'm only asking about air pressure in this instance.
    – Pelinore
    5 hours ago












  • Then you need to edit your question and make that clear. You just say "conditions".
    – Organic Marble
    5 hours ago










  • No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
    – Pelinore
    5 hours ago








  • 1




    Edited to clarify. Both of you play nice.
    – Russell Borogove
    4 hours ago




















  • There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
    – Organic Marble
    5 hours ago










  • That would be a different question, I'm only asking about air pressure in this instance.
    – Pelinore
    5 hours ago












  • Then you need to edit your question and make that clear. You just say "conditions".
    – Organic Marble
    5 hours ago










  • No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
    – Pelinore
    5 hours ago








  • 1




    Edited to clarify. Both of you play nice.
    – Russell Borogove
    4 hours ago


















There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
– Organic Marble
5 hours ago




There's basically no O2 in the Martian atmosphere so no matter how deep you dig your trench, you still won't get an Earthlike atmosphere.
– Organic Marble
5 hours ago












That would be a different question, I'm only asking about air pressure in this instance.
– Pelinore
5 hours ago






That would be a different question, I'm only asking about air pressure in this instance.
– Pelinore
5 hours ago














Then you need to edit your question and make that clear. You just say "conditions".
– Organic Marble
5 hours ago




Then you need to edit your question and make that clear. You just say "conditions".
– Organic Marble
5 hours ago












No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
– Pelinore
5 hours ago






No I don't, the question is very clear, it asks for the depth needed to give the air density, the comments you've misinterpreted as the question are there to give context to the question (what prompted me to ask).
– Pelinore
5 hours ago






1




1




Edited to clarify. Both of you play nice.
– Russell Borogove
4 hours ago






Edited to clarify. Both of you play nice.
– Russell Borogove
4 hours ago












1 Answer
1






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3
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Mars' atmosphere scale height is, depending on who you ask, 10.8 to 11.1 km.




  • Pressure at the bottom of Hellas Planitia: 1.16 kPa

  • Earth sea level: 101.3 kPa

  • Earth 6km altitude: ~50 kPa.


So we need air pressure to increase by a factor of about 43; ln 43 = 3.76 scale heights -- so we need a trench about 41km deep. Start digging!



This gets equivalent air pressure, but there's almost no oxygen. Partial pressure of CO2 on the other hand is about 2400 times higher -- Mars's surface level atmosphere offers more CO2 than Earth as it is.






share|improve this answer





















  • "Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
    – Pelinore
    4 hours ago










  • And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
    – Loren Pechtel
    3 hours ago











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Mars' atmosphere scale height is, depending on who you ask, 10.8 to 11.1 km.




  • Pressure at the bottom of Hellas Planitia: 1.16 kPa

  • Earth sea level: 101.3 kPa

  • Earth 6km altitude: ~50 kPa.


So we need air pressure to increase by a factor of about 43; ln 43 = 3.76 scale heights -- so we need a trench about 41km deep. Start digging!



This gets equivalent air pressure, but there's almost no oxygen. Partial pressure of CO2 on the other hand is about 2400 times higher -- Mars's surface level atmosphere offers more CO2 than Earth as it is.






share|improve this answer





















  • "Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
    – Pelinore
    4 hours ago










  • And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
    – Loren Pechtel
    3 hours ago















up vote
3
down vote













Mars' atmosphere scale height is, depending on who you ask, 10.8 to 11.1 km.




  • Pressure at the bottom of Hellas Planitia: 1.16 kPa

  • Earth sea level: 101.3 kPa

  • Earth 6km altitude: ~50 kPa.


So we need air pressure to increase by a factor of about 43; ln 43 = 3.76 scale heights -- so we need a trench about 41km deep. Start digging!



This gets equivalent air pressure, but there's almost no oxygen. Partial pressure of CO2 on the other hand is about 2400 times higher -- Mars's surface level atmosphere offers more CO2 than Earth as it is.






share|improve this answer





















  • "Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
    – Pelinore
    4 hours ago










  • And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
    – Loren Pechtel
    3 hours ago













up vote
3
down vote










up vote
3
down vote









Mars' atmosphere scale height is, depending on who you ask, 10.8 to 11.1 km.




  • Pressure at the bottom of Hellas Planitia: 1.16 kPa

  • Earth sea level: 101.3 kPa

  • Earth 6km altitude: ~50 kPa.


So we need air pressure to increase by a factor of about 43; ln 43 = 3.76 scale heights -- so we need a trench about 41km deep. Start digging!



This gets equivalent air pressure, but there's almost no oxygen. Partial pressure of CO2 on the other hand is about 2400 times higher -- Mars's surface level atmosphere offers more CO2 than Earth as it is.






share|improve this answer












Mars' atmosphere scale height is, depending on who you ask, 10.8 to 11.1 km.




  • Pressure at the bottom of Hellas Planitia: 1.16 kPa

  • Earth sea level: 101.3 kPa

  • Earth 6km altitude: ~50 kPa.


So we need air pressure to increase by a factor of about 43; ln 43 = 3.76 scale heights -- so we need a trench about 41km deep. Start digging!



This gets equivalent air pressure, but there's almost no oxygen. Partial pressure of CO2 on the other hand is about 2400 times higher -- Mars's surface level atmosphere offers more CO2 than Earth as it is.







share|improve this answer












share|improve this answer



share|improve this answer










answered 4 hours ago









Russell Borogove

78.4k2256340




78.4k2256340












  • "Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
    – Pelinore
    4 hours ago










  • And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
    – Loren Pechtel
    3 hours ago


















  • "Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
    – Pelinore
    4 hours ago










  • And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
    – Loren Pechtel
    3 hours ago
















"Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
– Pelinore
4 hours ago




"Start digging!" got my shovel, just waiting on my ticket from SpaceX :)
– Pelinore
4 hours ago












And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
– Loren Pechtel
3 hours ago




And note that at this depth your trench almost certainly collapses in on itself, the rock can't take the load.
– Loren Pechtel
3 hours ago


















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