[akiselev]

Yes. Some technology and techniques will trickle down from defense and aerospace like it usually does. Manufacturing will be scaled up and infrastructure retrofitted. Events much more traumatic like an atmospheric EMP have been a design concern since shortly after we developed nuclear weapons. We've got well understood technology to solve any issues that come up.

[jopsen]

It also seems likely that quick geological events are rather slow on a human time scale...

So we'll hopefully have hundreds of years, if not thousands of years to prepare.