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Questions tagged [geophysics]

For questions relating to geophysics: the study, behavior, consequences, and technologies involving the physical properties of the Earth.

2
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1answer
97 views

Earth tilt changes due to space launches

How many rocket launches are needed to change the axial tilt of the Earth so much that it is noticeable with instruments available today? We can assume that we are talking about the heaviest rocket ...
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1answer
47 views

How would constant rhythmic tsunamis affect the coast lines of the Atlantic Ocean?

Premise: a massive organic structure sits somewhere in the Atlantic Ocean giving of an intermittent telekinetic pulse. This would presumably create a constant chain of tsunamis. What sort of abnormal ...
3
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6answers
280 views

Creating flying cities

Writing about suspended cities within a planet's atmosphere! The story itself focuses on the air forces that fight for each of the hundreds of floating city states living in the sky, but that's here ...
3
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1answer
237 views

Any potential problems with the density of a planet with a volume 8 times that of Earth but the same surface gravity as Earth?

Assuming that there is an Earth-like planet that has 8 times the volume, 2.83 times the radius, and has the same surface gravity as Earth, and has oceans; what are potential problems concerning the ...
3
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1answer
67 views

Oceanic crust formation

I'm working on a earth-like planet with a much lower sea level (like 3000m so the mid-ocean ridge would form many islands) but is that even possible? Will the emerged ridge make some weird stuff and ...
5
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2answers
121 views

How might the cooling of the Earth's core be accelerated?

Essentially, what would be the most efficient way of causing the Earth's core to cool as much as possible without damaging human civilization in any other way (the outcome can damage it, but not the ...
-1
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1answer
149 views

Could a natural satellite in geosynchronous orbit be used as a counterweight to a space elevator?

Could a natural satellite in geosynchronous orbit be used as a counterweight for a space elevator? Does the counterweight need to be of approximately the same weight as the anchor? If so, I suppose ...
1
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3answers
156 views

Lifting water from a subterranean lake by boiling it?

A medieval-tech desert city relies on a nearby subterranean lake for their water source. In lieu of employing thousands of slaves carrying pots up a long series of tunnels, could the intrepid desert ...
8
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3answers
510 views

Is an offset mountain range plausible?

For my world, I would like a coastal mountain range that partway along its length is offset by a few (say, 100) kilometres, forming a pass through the mountains, like so: (N.B. I've drawn this very ...
0
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2answers
131 views

Could there be a plausible description for a kind of radioactive ore that can amplify the energy of a host or object, or potentially destroy it? [closed]

This kind of ore should be rare (maybe from meteorites?), dangerous (radioactive?), but potentially very useful in a world where people have augmented abilities, cybernetic attachments, that sort of ...
6
votes
4answers
798 views

Can a dual planet have an orbit around the Sun similar to Earth's?

This is a sequel to my previous question How big could a moon be before its orbit became too unstable or tidally locked to its planet OK, let's imagine that the thing everyone thought was a moon was ...