Re: Hell Creek (long)

["James R. Cunningham" <jrccea@bellsouth.net>]

Graydon wrote:

> > Quite right.  Some of them are elliptical.  But the big ones are pretty
> much circular.  (jrc)
>
> The standard explanation for that is that the fireball dynamics dominate
> the kinetic energy distribution from the trajectory; once one gets above
> a certain impactor energy, the fireball swamps the contributions of
> angle.

That's my point, Graydon.  Thanks.

> This is one of those subjects where it's hard to test people's
> simulations, though.

True.  To really test it thoroughly, one would need to observe a real-life
explosion involving teratons of energy on an earthlike planet .  I'd just as
soon not.