nukes have a peculiar "famous" double flash Also don't forget the EMP effects of a large nuke. Just because a large nuke on the surface doesn't "vaporize all

nukes have a peculiar "famous" double flash Also don't forget the EMP effects of a large nuke. Just because a large nuke on the surface doesn't "vaporize all global electronics magically" doesn't mean it would be unmeasurable. I am curious how unclassified the detail level can be for seismographic analysis. Certainly, oil prospectors can output detailed 3-d models given prior preparation and "generic earthquakes" have nearly instant results for depth of the earthquake and precise location. Anyway my point is the destruction in the linked article was spread along a 100 KM (or so..) SW to NE line simultaneously whereas nukes are obviously point sources. I suppose incredibly unluckily a meteor could come precisely 90 degrees straight down to fool such analysis but those impacts are statistically unlikely. It would seem pretty trivial given enough seismographs on the ground and enough global computing power to instantly detect the difference between a single point source and a geographically long linear impact source.