I think the organic material (corn kernel clasts in
spent brown fuel rods) embedded in the ice are a
pretty good indication to where the ice chunks
originated. Notice in the image how far away the
homeowner is keeping the ice chunk that damaged the
house away from her nose, PU!
All the Best,
Adam
--- Jerry <[EMAIL PROTECTED]> wrote:
Doesn't anyone want to address the origins of these
and all the other
instances reported on the List over the years? Or
are we all convinced
they're from errant jetliners poopers?
Jerry Flaherty
----- Original Message -----
From: "Mike Groetz" <[EMAIL PROTECTED]>
To: "Meteorite List"
<[email protected]>
Sent: Friday, July 27, 2007 1:25 PM
Subject: [meteorite-list] Mysterious chunks of ice
pelt Iowa town
> There are some pretty good pictures on the CNN
site.
> Everyone keep their head down....
> Mike
>
>
http://www.cnn.com/2007/US/07/27/falling.ice.ap/index.html
>
> Mysterious chunks of ice pelt Iowa town
> Story Highlights
> One falling chunk of ice reportedly weighed 50
pounds
>
> No one on the ground hurt by falling chunks of ice
>
> Possible sources of ice: Airplane or a
thunderstorm
>
> DUBUQUE, Iowa (AP) -- Large chunks of ice, one of
them
> reportedly about 50 pounds, fell from the sky in
this
> northeast Iowa city, smashing through a woman's
roof
> and tearing through nearby trees.
>
> Authorities were unsure of the ice's origin but
have
> theorized the chunks either fell from an airplane
or
> naturally accumulated high in the atmosphere --
both
> rare occurrences.
>
> "It sounded like a bomb!" 78-year-old Jan Kenkel
said.
> She said she was standing in her kitchen when an
ice
> chunk crashed through her roof at about 5:30 a.m.
> Thursday. "I jumped about a foot!"
>
> She traced the damage to her television room,
where
> she found a messy pile of insulation, bits of
ceiling,
> splintered wood and about 50 pounds of solid ice.
>
> Karle and Mary Beth Wigginton, who live a block
away,
> heard a loud "whoosh" coming through the trees.
They
> discovered several large chunks of ice in front of
> their home and some smaller ones in the yard and
in
> the street.
>
> "I could see where branches were shredded, which
told
> me it was definitely coming out of the sky," Karle
> Wigginton said.
>
> He estimated the original chunk of ice was the
size of
> a basketball. "It was pure white," he said. "The
main
> parts I picked up were very smooth."
>
> Elizabeth Cory, a spokeswoman for the Federal
Aviation
> Administration, said investigators would contact
> Kenkel to try to determine the source of the ice.
>
> "It is very uncommon for something like this to
come
> from an aircraft," Cory said. "That is really
unusual
> if it is pure white ice, especially at this time
of
> year."
>
> Occasionally, aircraft latrines discharge contents
at
> altitude, resulting in chunks of descending ice.
> Airplanes also sometimes accumulate ice on their
edges
> in certain atmospheric conditions, including high
> altitude and extreme moisture, said Robert
Grierson,
> the Dubuque Regional Airport manager and a pilot.
>
> The moisture involved in such a scenario could
have
> come from the tops of strong thunderstorms.
However,
> Dubuque had clear skies at the time the ice fell,
said
> Andy Ervin, a meteorologist with the National
Weather
> Service in Davenport. "There was nothing unusual
going
> on," he said.
>
> David Travis, a professor of geography and geology
and
> an associate dean at the University of
> Wisconsin-Whitewater, has studied the phenomenon
of
> large chunks of ice falling from a clear sky. He
said
> it's possible the ice could have been a
megacryometeor
> -- "similar to a hailstone, but without the
> thunderstorm."
>
> Travis is part of a research team that has
documented
> more than 50 possible megacryometeor cases during
the
> past five years. Some involve ice chunks the size
of
> microwave ovens.
>
> "It is hard to keep something like that suspended
in
> air without a thunderstorm," Travis said.
>
> Most megacryometeor sightings have occurred in
coastal
> areas, where atmospheric turbulence helps keep ice
> suspended long enough to grow into large chunks.
>
> Travis' research team speculates the phenomenon
could
> be linked to global warming, suggesting that
climate
> change might make the tropopause portion of the
> atmosphere colder, moister and more turbulent.
>
> "But those don't typically happen in the summer
time,"
> Travis said. "It seems like they are mostly
associated
> with the passage of passing cold fronts."
>
>
>
>
>
>
>
>
>
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