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Re: Theories on the extinction of dinosaurs
Larry Febo wrote:
> I never considered the heat-shockwave to have circled the entire earth.
> North America yes,...but the rest of the earth?? Then again, I haven`t
> calculated any of the physics involved. (It just dosen`t "seem" to have
> been large enough for all that).
15-20 teratons of TNT. Think of the blast from a one megaton atomic bomb. Now
set off 15-20 million of them simultaneously. How much does it take to send a
shockwave around the earth? Or look at the Jupiter impactors from a few years
back that were smaller than the Chixulub impactor (but traveling faster). They
put out shockwaves larger than the earth. I don't know the answer to your
question either, but suspect the shockwave went around the earth several times,
while the heat wave didn't cover more than one hemisphere. Speculation only.