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Q&A

Boiling Underwater Layer on an Ocean Planet

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I'm coming up with ideas for locations in my sci-fi story and I thought of an interesting one. Here's the scenario:

A planet has a watery ocean sitting on heated bedrock. Temperatures range from 500-100 Celsius deep underwater to around 0 at the surface, varying based on distance from the equator.

I imagine there'd be a deep sea layer of super hot compressed air, followed by a layer of very hot water and bubbles rising to the surface, topped by a surface layer that's largely cool and undisturbed. I'm thinking the heat and activity below would stimulate life in the ocean (it's inhabited).

Furthermore, not sure if this matters, but during winter, the surface would freeze over completely, due to the low surface temperature.

Is this an accurate description of what would happen?

Thanks in advance

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This post was sourced from https://worldbuilding.stackexchange.com/q/93403. It is licensed under CC BY-SA 3.0.

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