And states the main problem, with a deep ocean detonation, would be fallout.
I'm not sure that's right. The shockwave of a bomb that insane could easily have seismic and tsunami effects. Probably be the biggest mass of dead fish floating at the surface, too.
perhaps, though you'd have to dig a much bigger hole. however, the paper points out that the sheer military uselessness of such an enormous bomb would be crucial to making it legal or politically feasible. the international community would be understandably sus of anyone wanting to make 1620 tsar bombas.
Thanks for the link, interesting read! I know that a good paper is succint, but honestly, I thought that making the case for a gigaton-yield nuclear explosion to combat climate change would take more than four pages...