(meteorobs) Sentinel Alert -Addendum

[stange34 at sbcglobal.net]

You are quite right George.

In my short experience in Meteor/Fireball work, the opportunity to use my 
personal hand-held detection equipment so far has not been realized. I know 
better than to attempt recovery in broken high altitude terrain.

Perhaps a rollng hills or desert  terrain will allow an attempt if it is 
fairly close by and is trianglulated with enough accuracy to resolve the 
fall area to <5 square miles. I am accustomed to search using a visibly 
aligned or flagged grid pattern. It is the ONLY way to insure some measure 
of success. Otherwise it is just a random chance encounter.

Larry
YCSentinel

----- Original Message ----- 
From: "drobnock" <drobnock at penn.com>
To: <meteorobs at meteorobs.org>
Sent: 2007/11/16 18:02
Subject: (meteorobs) Sentinel Alert -Addendum


> OFF topic - seeing meteors and finding meteorites, a short discussion
>
>>From the thread it appears the inquires on using all sky cameras and
> coordinating the path of a big fireball will help locate a fresh
> meteorite fall.
>
> It is interesting that there has been no discussion of doing the actual
> field work to find the fall.
>
> Even if there is a meteorite impact on the ground, in an isolated area,
> the chance of a quick find is not high. Two fresh examples would include
> the  (2007) screamer in Alberta and the Pennsylvania fall in the Sproul
> Forest in 2001. The Sproul  was estimated to be between  30 to 90 tons.
> Yet still no one has stepped forward with a sample. And the terrain in
> NE Pennsylvania is difficult.
>
> We have been working on a "simple" problem for the past few years of
> finding meteorites in coal seams. We have one sample and still the
> analysis is inclusive.
>
> I guess it has to be remembered that seeing a bright fireball heading
> through the atmosphere, either visually or with automated eyes,  does
> not mean it impacted the surface.
>
> George John Drobnock
>
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