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Re: deep water = less ejecta?
On Jan 27, 2008, at 9:16 PM, don ohmes wrote:
Anyhow, what I was thinking re impactors is that the rock vapor
fraction of the ejecta will have a much higher 'boiling point' and
change phase fairly quickly, therefore carrying further and cooling
more slowly (due to geometry and density) than the water fraction
which as a vapor will lack momentum and dissipate it's heat quickly.
But whatever. It is out of my depth, anyway (pun intended).
Oh, I see what you're saying. It would indeed seem as if the timing
of state changes could affect inertial components and thus dispersal
distance. It's not my area of expertise, either, so I can't really
comment on that aspect with much confidence. There's the added factor
that the heat capacities will change as the ejecta cool, so the
overall heat loss curves are non-linear, which makes things rather
more complicated (as if they weren't messy enough...)
Michael Habib, M.S.
Center for Functional Anatomy and Evolution
Johns Hopkins School of Medicine
1830 E. Monument Street
Baltimore, MD 21205