Greater Vancouver and the Salish Sea
I have posted on this before, but it needs a revisit. The Salish Sea is 7000 square miles and is mostly north from the strait to Campbell river.
Urban density in Vancouver is 15,000 per square mile. Thus it is plausible that massive floating urban complexes covering the Salish Sea can hold a population close to 100.000.000 folks.
The advantages of doing this are very real. First we can do it using large structures using self healing concrete and engineered to last forever. It is within our ability and can be done over and over again.
All this is earthquake immune, and in the Salish Sea, it is Tsunami proof and weather proof as well to significant wave action. It is one of the few places on earth that all this holds true. Thus building a massive population is safe over thousands of years in this location.
The engineering challenge is still huge because you want to include a growing floor for high density agriculture to help support the population. and of course other floors in the basin portion for industry and all that as well, but we already do all that. folks would live in typical highhrise builds now universal around the world. Yet all this is completely possible.
Done properly, the Sea itself would be deply enriched and the biomass hugely improved. And we are imagining a floating urban garden of eden.
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