[meteorite-list] Further thoughts

[Bob Loeffler]

Hi mexicodoug, et al,

Does anyone have evidence of what really happens (i.e. explode or fragment)
with meteors/meteoroids that pass through the atmosphere?  I'm a newbie and
therefore not pretending to know what I'm talking about, but it would seem
to me that there are some meteors/meteroids that COULD have gases trapped in
their molecular structure that COULD heat up and actually explode during
their fiery passage through our atmosphere.  Large meteors wouldn't do this
because their internal temperatures never increase at all (they are still as
cold as the space environment where they have been traveling for eons), but
small friable meteors like Carancas could possibly have gases in them that
could heat up and therefore explode in our atmosphere.

That is just a guess, not a fact, so please no flames.  ;-)  I'm just trying
to get these ideas out of my head and get some explanations for them.

Alcohol doesn't stop the voices, it just s l o w s   t  h  e  m    d   o   w
n   .   .   .

:-)

Regards,

Bob


-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of
mexicodoug at aim.com
Sent: Wednesday, March 19, 2008 10:08 AM
To: pshugar at clearwire.net; Meteorite-list at meteoritecentral.com
Subject: Re: [meteorite-list] Further thoughts



Pete wrote:
"Some will be blown up and some will be blown down."

I believe this is a common misconception for many in the meteorite 
community and common thought.  I don't think anything is "blowing up".  
Simply fragmenting.  Each part of the original whole maintains its 
portion of momentum upon fragmentation.  The direction of the momentum 
is along the angle of entry.  There is no blowing up in that sense of a 
bomb which propells fragments in all directions as there is no internal 
source of energy (like in a chemical explosive).  The only dispersion 
will be caused by different frictional (aerodynamic effects) deviations 
like sticking your hand out the car window and using yourwrist as an 
aileron.  If your fingers fell off your hand, there would be no 
explosion, and nothing being blown forward either :-)

Best health, Doug
sorry - now caught up with the good replies on this topic, we just got 
electricity internet, etc. back after the nuclear winter our city 
experienced yesterday where we couldn't see the Sun on a clear day



-----Original Message-----
From: Pete Shugar <pshugar at clearwire.net>
To: Meteorite-list at meteoritecentral.com
Sent: Wed, 19 Mar 2008 10:45 am
Subject: [meteorite-list] Further thoughts


Consider the Fireball. 
When the (soon to be) meteorite explodes into a fireball, the pieces 
are blown in every direction, Those blown in the direction 
that the meteor came from which should give them a negative speed and 
as such will start to drop first. Those in the direction of travel give 
the furtherest reach from the above mentioned pieces. This will define 
the outside distance of the strewnfield. 
Some will be blown up and some will be blown down. I would suspect that 
those that are blown downward would be the first to reach ground as 
these will be accelarated and those that are blown upward must go up 
before they can come down, so they should be the last to reach the 
ground. 
This means that the middle of the strewnfield is the first to be 
populated as well as the last to be populated. The two ends fill up in 
between the first and last parts of the fall. 
Anyone care to check? 
I don't think I missed anything, but I'm not an EXPERT, just using 
deductive reasoning. 
Pete 
 
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