[meteorite-list] GA NC TN AL KY Meteor Approx 2320 EDT // 2220 CDT 02AUG2014

From: Anne Black <impactika_at_meteoritecentral.com>
Date: Tue, 5 Aug 2014 21:50:12 -0400 (EDT)
Message-ID: <8D17F2FE501B391-924-6E4B_at_webmail-d284.sysops.aol.com>

Thank you Al!
You are the only one who responded.

Yes, of course a lot of meteorites are lost to the oceans, lakes, and
to remote areas. And it is interesting that the best year for Falls is
1933. Of course I certainly would not expect the average rate of Falls
to change over the years, but with radar, all-sky cameras, computers,
fast communications, all the work from Dirk Ross, Rob Matson and
several others, and a lot more people looking up, I would expect the
percentage of recoveries to go up.

But is it?
Or is all our modern fancy equipment all for naught?


Anne M. Black
www.IMPACTIKA.com
IMPACTIKA at aol.com


-----Original Message-----
 From: almitt2--- via Meteorite-list
<meteorite-list at meteoritecentral.com>
To: meteorite-list <meteorite-list at meteoritecentral.com>
Sent: Tue, Aug 5, 2014 7:24 pm
Subject: Re: [meteorite-list] GA NC TN AL KY Meteor Approx 2320 EDT //
2220 CDT 02AUG2014


Hi Anne and all,

There are many scientifically calculated fall rates. Most assume
meteorites that have landed are 100 grams or larger as those are deemed
more findable. A Canadian study estimated some 21,000 falls per year.
We loose 3/4 in the oceans, leaving some 6,000 to land on dry land.
Many of those land in remote areas away from the notice of people.
Higher populations usually result in the notice of more falls. Light
pollution probably reduces that number some.

Of all the falls, only 0.1% or about 5 to 6 falls per year are actually
collected. The 1933 year was an excellent year for recovery of falls.
17 meteorites of the potential fall total were recovered!

According to this Canadian study we are really no better at recovery of
falls than we were in the past. Even though meteorite falls are better
understood than in the past. It is important to keep this in mind as
there are many unlocated falls all over the world.


Source for some of this information:
Canadian fireball rates and meteorite falls ? declining returns
by
Martin Beech
Campion College, The University of Regina, Regina, Saskatchewan, Canada


--AL Mitterling
Mitterling Meteorites



Quoting Anne Black via Meteorite-list
<meteorite-list at meteoritecentral.com>:

> I am curious.
> It is practically everyday that a fireball is spotted somewhere
> around the globe, but......
>
> - How many of those "fireballs" are real fireballs, not plane,
> fireworks, lighting,....... etc?
> - How many of those real ones burn up in the atmosphere?
> - How many make it to the ground and produce meteorites?
> - And finally how many of those are ever found soon enough to be
> called Falls?
>
> Is anyone keeping track of those numbers?
> The percentage meteorites <> fireballs would be interesting.
>
>
> Anne M. Black
> www.IMPACTIKA.com
> IMPACTIKA at aol.com

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Received on Tue 05 Aug 2014 09:50:12 PM PDT