[meteorite-list] Russian Scientists Find Crater in Meteorite-Hit Lake

From: Jodie Reynolds <spacerocks_at_meteoritecentral.com>
Date: Thu, 21 Mar 2013 16:36:09 -0700
Message-ID: <884197089.20130321163609_at_spaceballoon.org>

That'd be a good trick without vaporizing the lake...



Thursday, March 21, 2013, 2:06:41 PM, you wrote:


> http://en.ria.ru/science/20130321/180166867.html

> Russian Scientists Find Crater in Meteorite-Hit Lake
> RIA Novosti
> March 21, 2013

> MOSCOW, March 21 (RIA Novosti) - A radar probe of the bottom of
> Chebarkul Lake in Russia's Urals has revealed a crater possibly created
> by a fragment of a meteorite that exploded over the city of Chelyabinsk
> last month, a Russian scientist told RIA Novosti on Thursday.

> The meteorite broke into approximately seven large fragments and one of
> them is believed to have fallen into Chebarkul, forming a hole in the
> ice about eight meters in diameter.

> Analysis of minute rock fragments collected near the hole has confirmed
> that they are from a meteor. Tests revealed they were chondrite, which
> is the most abundant type of meteorite, and contained some 10 percent of
> iron.

> Scientists from Russia's Institute of Earth Magnetism, Ionosphere and
> Radio Wave Propagation (IZMIRAN) carried out a study of the lake's
> bottom using wide-band earth-sensing radars.

> "A 3D image of the bottom shows a 3-meter crater that could have very
> probably been created by impact with a large meteorite fragment," said
> IZMIRAN researcher Alexey Popov.

> Popov said the crater is not located directly beneath the hole in the
> ice, but is some 10 meters to one side of it.

> Emergencies Ministry divers searching the site in February failed to
> find any traces of the meteorite as the bottom of the lake was covered
> in a thick layer of silt.

> The meteorite that slammed into the Urals region of central Russia on
> February 15 landed with a massive boom that blew out windows and damaged
> thousands of buildings around the city of Chelyabinsk, injuring 1,200
> people in the area. Health officials say 52 people were hospitalized.

> NASA estimates the meteorite was roughly 15 meters (50 feet) in diameter
> when it struck Earth's atmosphere, travelling faster than the speed of
> sound, and exploded in a fireball brighter than the sun.
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-- 
Best regards,
 Jodie                            mailto:spacerocks at spaceballoon.org

Received on Thu 21 Mar 2013 07:36:09 PM PDT