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Re: Theories on the extinction of dinosaurs
The sound wave from Krakatoa exploding was heard on the opposite side of
the planet. Mt St Helens dropped ash in Europe. Mt Pennetumba made red
sunsets in California for 6 months after it went off.
Those were litte compared to what the KT meteor did, and still had
global effects. (Heh, and North America wasn't as far away from the
rest of the continents at the KT)
> 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).
> "James R. Cunningham" wrote:
> 15-20 teratons of TNT. Think of the blast from a one megaton atomic bomb.
> 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).
> 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
> while the heat wave didn't cover more than one hemisphere. Speculation only.
Flying Goat Graphics
(Society of Vertebrate Paleontology member)