The story about melting of the West Antarctic Ice Shelf is terrifying.
Surely this is the kind of challenge we mean by the term "geoengineering."
It seems there may be too solutions: hold the water (ice) right
where it is, or--find someplace to put it. I would like to talk about the
second route. There are rather large areas of the earth that are very dry
and below sea level.
https://geology.com/below-sea-level/
Why not put the water there? The Caspian depression is about 90 feet deep
and covers about 200,000 square miles. The Dead Sea depression is very
deep and fairly large. I haven't checked, could filling these depressions
give a significant reprieve from rising seas?
I believe there are economic benefits of a sea level canal to the
Caspian that could make it a profitable venture. I think China would be
willing to pay for it--it could give them a shorter shipping route to
Europe. I'm not an expert--what do you think? Is someone working on this?
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