I’m not proposing this as an actual solution, it’s just a dumb idea. But if we dug a huge, wide hole at the bottom of the ocean, or maybe widened the Mariana Trench or something, could that extra space make the sea levels drop enough to keep the land from flooding?
The energy required to lift that amount of rock from the seabed to above the surface would be impractical. But good news! It doesn’t need to be from the bottom of the sea, just a part below the desired waterline. So we can dig these big holes you want right off the coastline and then, as a bonus, use the materials as landfill to raise or extend the current coastline. Still wildly impractical, but much less so than digging at the bottom.
Next time I go to the beach I’m bringing a shovel, and will dig a hole just past where my feet get wet.
I’m doing my part.
Sounds like… Dykes. See: The Netherlands.
It’s “dikes” in this case, and yes, you could use the stone for dikes or levees, but since most of it would be sedimentary rock I’m not sure how well it would work for the purpose: most sedimentary rocks are rather porous.
Oh whoops, thanks for the correction!
Still more practical than musk rat going to mars though.
I say we still do that one, though. As long as he goes, personally.
With no return trip
With the failure rate SpaceX is hitting with their Starships, that problem would likely take care of itself.