[meteorite-list] Chebarkul - Chelyabinsk - Is it a "hammer" ???

From: Peter Scherff <PeterScherff_at_meteoritecentral.com>
Date: Sun, 17 Feb 2013 17:38:18 -0500
Message-ID: <00c501ce0d5f$7bfb15f0$73f141d0$_at_rcn.com>

Hi Mike,

        I think of "hammer" as a term that collector's use to organize their collections and dealer's use to market their meteorites. As such "hammer" is in the eye of the beholder. I don't think there will ever be a universally accepted definition. I admire you for trying to nail down a definition however I think you have a hopeless task ahead of you.

Thanks,

Peter

-----Original Message-----
From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Galactic Stone & Ironworks
Sent: Sunday, February 17, 2013 4:46 PM
To: met-list
Subject: [meteorite-list] Chebarkul - Chelyabinsk - Is it a "hammer" ???

Hi List,

Quick question for hammer collectors :

If meteorites are recovered from this event, and these recovered meteorites did not actually strike anything manmade, would this fall still have any reason to be labeled as a "hammer" ?

Does damage from an impact shockwave count towards this fall being a hammer?

I know this is sticky issue to some - the term "hammer fall" is not widely accepted and it's validity has been hotly debated on this list previously. This Russian event is spectacular for many reasons and does not need to be "promoted" to hammer status if it doesn't deserve such status.

Possible labels for this fall :

1) fall (of course)

2) witnessed fall (duh!)

3) observed fall (yes)

4) hammer fall (? - questionable at best)

5) crater-maker (does a hole in an ice-sheet count as a "crater"?)

6) wake-up call : time to start seriously considering an effective system to detect these "small" threats which fall under the size-detection threshold of larger observing networks. It's amazing that an object with the power to flatten a city slipped through undetected, despite most of the world's telescopes being pointed upwards for about a month preceding the impact.

Best regards,

MikeG

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On 2/17/13, karmaka <karmaka-meteorites at t-online.de> wrote:
> Chebarkul / ????????? - lake fragments officially identified as 
> meteorites
>
> http://translate.google.de/translate?hl=de&sl=ru&tl=en&u=http%3A%2F%2F
> ria.ru%2Ftheme%2Fmeteorite_Ural%2F
>
> http://ria.ru/theme/meteorite_Ural/
>
>
> Martin
>
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Received on Sun 17 Feb 2013 05:38:18 PM PST