[meteorite-list] Canada big meteor

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Fri, 21 Nov 2008 10:01:45 +0100
Message-ID: <001901c94bb7$c8802730$177f2a59_at_name86d88d87e2>

Thoughts....

In the 20-years period from 1960 to 1980 20 meteorites were found in
Canada. 5 falls and 15 finds.

In the last 20 years, when meteorites underwent a popularization and people
got aware of them like never before,
there were found only 8 meteorites in Canada. 3 falls and 5 finds.

Accident or the result of Canadian meteorite policy?


In USA and Europe "amateurs" would try to narrow down and investigate such a
new possible fall. In Canada - I'm not so sure.......

Best!
Martin

-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Darren
Garrison
Gesendet: Freitag, 21. November 2008 06:27
An: Meteorite Mailing List
Betreff: [meteorite-list] Canada big meteor

http://www.canada.com/calgaryherald/story.html?id=e318f05d-0e09-4ec4-8d2a-5b
5e22fb7162

Massive fireball lights up night skies in Alta., Sask.
Laura Drake, Canwest News Service
Published: Thursday, November 20, 2008

EDMONTON - It wasn't a bird, and it sure as heck wasn't a plane, but
whatever
was in the sky over western Canada on Thursday night was very exciting for
the
people who saw it.

In Edmonton and across the Prairies, hundreds of people reported seeing a
bright
flaming object light up the sky around 5:30 p.m. local time. It was
variously
described as green, yellow, purple or blue, and appeared as either an
explosion
or an object streaking through the sky.

Sightings came from across the Prairies; from as far south as Medicine Hat,
Alta., to as far north as Beauval, Sask. - 600 kilometres from Edmonton.

Marcel Gobeil, who lives on a farm south of Edmonton, was in his living room
when he heard what he describes as a "loud boom," followed by bright
colourful
light in the sky.

"At first I thought it was fireworks," said Gobeil. "I've never seen
anything
like it; it was green and blue and then turned to bright red. It was pretty
big."

Gobeil said he thought the object hit the ground about 10 seconds later.

"It seemed like it fell on Beaumont, but it's more likely it landed in
Manitoba
or Saskatchewan if it was a meteorite," he said.

Hundreds of kilometres to the east, farmer Bruce Trapp also saw the light
show.

"It lit up the yard almost like midday, but just for an instant," said
Trapp,
who farms about 70 kilometres southwest of Saskatoon. "It was far brighter
than
any lightning strike I've ever seen."

Shawn Mitchler was pumping gas at Radisson, Sask., about 60 kilometres
northwest
of Saskatoon, when the sky flashed green and yellow.

"It seemed like fireworks or a missile coming down," said Mitchler, who
estimates the light show lasted five to 10 seconds.

"My heart just started racing because I didn't know what it was."

Edmonton International Airport spokesman Jim Rudolph said "the skies east of
the
airport lit up" at 5:27 p.m.

"According to NavCanada, it appears that this was the result of a meteorite,
but
that has not been confirmed," said Rudolph, adding that operations at the
airport were not affected.

"What we probably saw was a fireball, which is the result of a rock coming
into
the atmosphere," said Chris Herd, an associate professor in the University
of
Alberta's department of earth and atmospheric sciences and curator of the
university's meteorite collection.

"The big question now is whether or not anything hit the ground."

Richard Huziak, a member of the Royal Astronomical Society who lives in
Saskatoon, believes it was likely a meteor that did land somewhere near the
Alberta-Saskatchewan border.

It may be possible to determine a more precise location, since fireball
video
cameras designed to begin recording when a bright light appears in the sky
are
located in Saskatoon, Regina, Moose Jaw, Edmonton and Calgary.

"It's very likely this one has been caught. It will show the track through
the
sky and might show the orbit back into space," Huziak said.

But while many of the witnesses claimed to see something land, Herd said
this
was most likely an optical illusion. Since the fireball was a bright light
several kilometres up in a dark sky, it would have appeared close to anyone
who
could see it. If something did fall to the Earth, it's extremely unlikely
anyone
would have witnessed it, Herd said. As the object fell through the Earth's
atmosphere, it would slow down and the resulting decrease in friction would
cause it to stop burning.

"What we know about fireballs is that they're bright burning up for a
certain
amount of time in the atmosphere, but then they stop burning brightly. If
there's a rock that continues after that, it's falling in dark flight," he
said.

"This could literally be a couple of kilometres up in the air and it could
fall
the whole rest of the way without giving off any light. It could drop like a
rock to the ground."

Herd said while fireballs are quite frequent, they don't generally happen
over
populated areas.

"Something as bright as this is pretty rare," he said.

If something did ultimately hit the ground, Herd said, it would be a very
exciting find.

"It's not often that something actually lands and is found, because of all
the
factors that are working against you," he said, adding he hopes anyone who
finds
a new rock in their yard tomorrow will get in touch with him.

Meteorites often fall to Earth, but very few cause damage because the rocks
often disintegrate as they travel through the atmosphere.

For those who witnessed the fireball, Herd suggested they report it to the
Meteorites and Impacts Advisory Committee to the Canadian Space Agency,
which
can be found at Miac.uqac.ca.

Edmonton Journal

With files from Jamie Hall, Lana Haight, Saskatoon StarPhoenix

http://www.youtube.com/watch?v=fm7tnc3sYog
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Received on Fri 21 Nov 2008 04:01:45 AM PST