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Comment on Could rising sea levels caused by climate change be thwarted by digging a big hole at the bottom of the sea?

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.

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Demonmariner@lemmy.world ⁨1⁩ ⁨day⁩ ago
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.

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toothpaste_sandwich@thebrainbin.org ⁨1⁩ ⁨day⁩ ago
Sounds like... Dykes. See: The Netherlands.

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- Nemo@slrpnk.net ⁨1⁩ ⁨day⁩ ago
  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.
  
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  - toothpaste_sandwich@thebrainbin.org ⁨1⁩ ⁨day⁩ ago
    Oh whoops, thanks for the correction!
    
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