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^^This^^. It's about the partial pressures. In addition to mild narcosis, you would be at risk for oxygen toxicity. (Sunlight will penetrate 3.2ATM air just fine.)
But the canyon walls would probably cast some big dark shadows for the majority of day except for around noon when the sun would be directly above.
I suppose that amount on Nitrogen isn't as high as to produce irreversible effects. I think it's just unsafe to practice some tasks that require alertness, like driving. If you drive while you are under the effect of narcosis, you'll probably crash with your car, like if you drank an alcoholic beverage. Otherwise, I don't think the effect is that bad.
It would be neat to go into a room for an hour that put its pressure up that high to see how it feels and then go back into normal air to compare.
Yes, you would. Slowly changing the pressure will make the symptoms milder.
Wouldn't the pressure gradient have to be a lot higher than 3.2 atm to get decompression sickness? Water is a lot denser than air and only scuba divers really get that.
Wouldn't the pressure gradient have to be a lot higher than 3.2 atm to get decompression sickness? Water is a lot denser than air and only scuba divers really get that.
You can easily get the bends coming up from 3.2 atm. That's the equivalent of over 100 feet of water; someone coming up too rapidly from that depth would certainly suffer from the bends, and it could be quite severe.
You can easily get the bends coming up from 3.2 atm. That's the equivalent of over 100 feet of water; someone coming up too rapidly from that depth would certainly suffer from the bends, and it could be quite severe.
It would probably be much like the Mediterranean when it was dry. More information here https://en.wikipedia.org/wiki/Messinian_salinity_crisis especially in the section on adiabatic heating/cooling, and the effects on temperatures in a 4km deep area.
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