[meteorite-list] Fw: Grimsby, Ontario bolide info

From: Fries, Marc D <marc.d.fries_at_meteoritecentral.com>
Date: Thu, 15 Oct 2009 13:02:18 -0700
Message-ID: <C6FCE9FA.CB98%Marc.D.Fries_at_jpl.nasa.gov>

Well ain?t that a hoot - I sent him the same images a couple of weeks ago.
I even used the same background image! Peter Brown probably thinks we're a
single person with multiple personalities or something.

I'd say there's a potential return in the next data set at about 2.5 km
altitude, but it is down in the noise and open to interpretation.

Cheers,
Marc Fries


On 10/15/09 3:04 PM, "Darren Garrison" <cynapse at charter.net> wrote:

> To: <cynapse at charter.net>,
> <meteorite-list at meteoritecentral.com>
> Subject: Grimsby, Ontario bolide info
> From: "Matson, Robert D." <ROBERT.D.MATSON at saic.com>
> Date: Thu, 15 Oct 2009 11:16:08 -0700
>
> Hi Darren,
>
> (Please feel free to forward to the list on my behalf.)
>
> At the beginning of the week I contacted Dr. Peter Brown at University
> of Western
> Ontario, letting him know that the Grimsby bolide terminal burst had
> been captured
> on NexRad Doppler radar images taken in Buffalo, New York. I created
> several maps
> of the radar returns at three different altitudes, showing that the
> terminal burst
> location is in perfect agreement with UWO's solution (triangulated from
> seven
> all-sky cameras). I shared this information with Dr. Tony Phillips at
> SpaceWeather,
> and he has provided links on his site to a couple of the radar images I
> created:
>
> http://www.spaceweather.com/archive.php?view=1&day=12&month=10&year=2009
>
> A wide-area map is here:
>
> http://www.spaceweather.com/swpod2009/13oct09/Grimsby_5100m.jpg
>
> And a second map zoomed in on the terminal burst cloud is here:
>
> http://www.spaceweather.com/swpod2009/13oct09/Grimsby_Zoom_5100m.jpg
>
> As the filenames suggest, the Doppler beam altitude at this location was
> a little
> over 5 km, and the area covered is roughly a mile wide by 2 miles long.
> (There
> were also colocated radar returns at 6.5 km and 3.7 km, though the
> largest
> returns were at 5.1 km.) Judging from where meteorites were found in
> Park
> Forest and Ash Creek (West), I would expect a number of meteorites to be
> found
> directly beneath the strongest radar returns, with sizes generally
> increasing
> as you move to the east-southeast.
>
> I have not yet seen any images of the purported golf-ball-sized
> meteorite that
> hit the SUV, nor do I know where this SUV was parked, so can't judge
> whether
> it's a legitimate possibility.
>
> --Rob
>
> -----Original Message-----
> From: meteorite-list-bounces at meteoritecentral.com
> [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Darren
> Garrison
> Sent: Thursday, October 15, 2009 11:33 AM
> To: meteorite-list at meteoritecentral.com
> Subject: [meteorite-list] Time to play "Hammer or Scammer"
>
> http://www.stcatharinesstandard.ca/ArticleDisplay.aspx?e=2127299
>
> Grimsby meteorite found
> Updated 32 mins ago
>
>
> The Grimsby space rock has been found.
>
> A fragment of meteorite the size of a golf ball smashed in the
> windshield of a Grimsby family's sport utility vehicle on Sept. 25,
> according to a media release from the University of Western Ontario.
>
> Astronomers released a video Oct. 7 of a blinding meteor streaking
> across the skies of Southern Ontario three weeks ago, estimating pieces
> may have landed in Grimsby or West Lincoln.
>
> Meteorite hunters have been scouring the area ever since.
>
> A press conference to discuss the find is scheduled for Friday morning.
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Received on Thu 15 Oct 2009 04:02:18 PM PDT