I think it will be safer (when we master nanotech) to dig large and extremely long horizontal tube from the volcano and into the ocean, which will be attached to the magmatic chamber from the side. The tube will not destabilize the cover of the magmatic chamber and would allow us to controllably release energy from the chamber with many valves on the way. Even if we lost control over the tube, the energy will go into the ocean and partly dissolve in the water (which surely has its own risks, but will not cover global sunlight). Probably a drawing is needed to present the idea.
I would call it supervolcanic subway.
Denkenberger has an article under review with around 40 ways to mitigate the supervolcanic eruption.
I think it will be safer (when we master nanotech) to dig large and extremely long horizontal tube from the volcano and into the ocean, which will be attached to the magmatic chamber from the side. The tube will not destabilize the cover of the magmatic chamber and would allow us to controllably release energy from the chamber with many valves on the way. Even if we lost control over the tube, the energy will go into the ocean and partly dissolve in the water (which surely has its own risks, but will not cover global sunlight). Probably a drawing is needed to present the idea.
I would call it supervolcanic subway.
Denkenberger has an article under review with around 40 ways to mitigate the supervolcanic eruption.