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It's amazing how hot it is in some places underground, up to 44C. Wow.

jacquesm 10y ago
That's just the Earth's internal heater with a nice insulating blanket on top of it.
Kristine1975 10y ago
At least the workers had air conditioning: http://interaktiv.tagesanzeiger.ch/2016/gotthard-system/ http://interaktiv.tagesanzeiger.ch/2016/gotthard-system/ Security of the workers was strictly controlled. Working temperature for example was not allowed to exceed 28°C, which was achieved through cooling installations.
Shivetya 10y ago
I am curious that if we do get to Mars can we simply dig down or go under a mountain for warmth? You would not need a full on tunnel, just a system similar to geothermal heating
- xenophonf 10y ago
  I was curious, too, and found this: http://cseligman.com/text/planets/magnetism.htm http://cseligman.com/text/planets/magnetism.htm The author estimates Mars' core temperature to be 5000-7000F, compared to an estimate of around 14000F for Earth. Obviously, the planets' respective compositions are different, so I'm not sure if one could just scale a temperature estimate linearly---but what the heck, this is the Internet and no one's grading me, right? ;) So the core temperature ratio is 5/14, and the size ratio is 1/3, so: (5/14) * (1/3) * 44F = ~5F That comports with the current consensus regarding subsurface water, because scientists think that it's likely frozen or perhaps a brine (which would depress the solution's freezing point below that of pure water). Tunneling is probably a good idea anyway, because the surrounding rock will protect and insulate the habitat even if the subsurface temperatures aren't enough to warm it. Edited: Oh for God's sake, I confused degrees Fahrenheit with degrees Celsius.
- walrus01 10y ago
  For long term stays we'd need to dig underground dwellings on Mars anyways, though not nearly as deep, as the radiation that gets through its atmosphere will be very harmful to anyone living on the surface for multi year time spans.

That's just the Earth's internal heater with a nice insulating blanket on top of it.

Kristine1975 10y ago

At least the workers had air conditioning: http://interaktiv.tagesanzeiger.ch/2016/gotthard-system/ http://interaktiv.tagesanzeiger.ch/2016/gotthard-system/ Security of the workers was strictly controlled. Working temperature for example was not allowed to exceed 28°C, which was achieved through cooling installations.

Shivetya 10y ago

I am curious that if we do get to Mars can we simply dig down or go under a mountain for warmth? You would not need a full on tunnel, just a system similar to geothermal heating

xenophonf 10y ago
I was curious, too, and found this: http://cseligman.com/text/planets/magnetism.htm http://cseligman.com/text/planets/magnetism.htm The author estimates Mars' core temperature to be 5000-7000F, compared to an estimate of around 14000F for Earth. Obviously, the planets' respective compositions are different, so I'm not sure if one could just scale a temperature estimate linearly---but what the heck, this is the Internet and no one's grading me, right? ;) So the core temperature ratio is 5/14, and the size ratio is 1/3, so: (5/14) * (1/3) * 44F = ~5F That comports with the current consensus regarding subsurface water, because scientists think that it's likely frozen or perhaps a brine (which would depress the solution's freezing point below that of pure water). Tunneling is probably a good idea anyway, because the surrounding rock will protect and insulate the habitat even if the subsurface temperatures aren't enough to warm it. Edited: Oh for God's sake, I confused degrees Fahrenheit with degrees Celsius.
walrus01 10y ago
For long term stays we'd need to dig underground dwellings on Mars anyways, though not nearly as deep, as the radiation that gets through its atmosphere will be very harmful to anyone living on the surface for multi year time spans.