says a magnitude 9 earthquake is equivalent to 189 MT-tnt, so the largest atomic bomb detonated by mankind would be the energetic equivalent of an 8.6 magnitude earthquake.
But it's not really a fair comparison, since the atomic bomb is fast and probably wouldn't couple its energy into the earth particularly well compared to an earthquake.
says a magnitude 9 earthquake is equivalent to 189 MT-tnt, so the largest atomic bomb detonated by mankind would be the energetic equivalent of an 8.6 magnitude earthquake.
But it's not really a fair comparison, since the atomic bomb is fast and probably wouldn't couple its energy into the earth particularly well compared to an earthquake.