[House Atreides]

uh, I think the “mechanism” is a really big underwater explosion.
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We’ve had Hydrogen bomb tests in the pacific. There was blast and radiation damage; tsunamis...not so much.

I understand how tsunamis are created and a mammoth hydrogen bomb, unless it somehow triggered something else, would not do it.

Man made global warming, anyone?

[cpdiii]

I understand how tsunamis are created and a mammoth hydrogen bomb, unless it somehow triggered something else, would not do it

Actually exploded at depth an dependent on the coastal configuration it could. It would work on New York but not LA or San Fransisco. However really not relevant. Our response would be direct hits on their cities. This is all propaganda.

[TheNext]

Nuclear explosions are shape-able, hence focus-able, such as a conventional claymore or an improvised flame canister.

A nuclear critical mass can be a cylinder, a cone or a flat sheet.

An optimal shape would be a 3D parabola called an elliptic paraboloid focusing energy along its axis toward a coastal city target. The howitzer nuclear launch was likely football shape to fit inside the tube.

Live in the big city at your own risk, but do not be delusional of the extra risk.