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originally posted by: BASSPLYR
a reply to: majesticgent
Im not so sure of that. Nobody got evacuated for safety sake last time. North korea didnt retaliate then and we screwed em good.
As for delivery systems. .we got more stuff than just the b2. Lots of ways to skin a cat.
Earthquakes and explosions generate several types of seismic waves, starting with P, or primary, waves. These waves are the first to arrive at a distant station. Next come S, or secondary, waves, which travel through the ground in a shearing motion, taking longer to arrive. Finally come waves that ripple across the surface, including those called Rayleigh waves.
In an explosion as compared with an earthquake, the amplitudes of Rayleigh waves are smaller than those of the P waves. By looking at those two types of waves, scientists determined the Lop Nor incident was a natural earthquake, not a secretive explosion.