Make a hole in Earth's crust 50 miles wide and 5 miles deep. How many would it take to drain the atmosphere?

Question

If you could dig holes as indicated above into the surface of the Earth and keep all water out, how many would you need in order to drain the entire ecosphere from Earth's surface? An extra factor to consider aside from the depths of the holes is the soil displacement that would end up raising the surface of the Earth somewhat while also raising the altitude of the ecosphere.

Just curious...

I do see I said "atmosphere" in the question then "ecosphere" in the add'l details above. I meant ecosphere in both cases, though if you'd like to answer for the entire atmosphere that would be interesting, also. :-)

Answer 1

It would be a moot point. Up to a certain height the atmosphere/ecoshpere would just displace the earthen mound. If you dug up 1/2 the earths surface, you would only,in theory, displace the equivalent amount of "shpere".

Considering that 2/3 of the Earth's surface is water, it would be impossible to physically move 1/2 its surface.

Answer 2

is your imaginary hole 50 miles square or what. sorry but you left that out.