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Russian meteorite blast explained: Fireball explosion, not meteor shower (maps)
rt.com/news ^ | Edited: 16 February, 2013, 18:34

Posted on 02/16/2013 11:40:13 AM PST by Ernest_at_the_Beach

A Russian policeman works near an ice hole, said by the Interior Ministry department for Chelyabinsk region to be the point of impact of a meteor seen earlier in the Urals region, at lake Chebarkul some 80 kilometers (50 miles) west of Chelyabinsk February 15, 2013 (Reuters / Chelyabinsk region Interior Ministry)

A Russian policeman works near an ice hole, said by the Interior Ministry department for Chelyabinsk region to be the point of impact of a meteor seen earlier in the Urals region, at lake Chebarkul some 80 kilometers (50 miles) west of Chelyabinsk February 15, 2013 (Reuters / Chelyabinsk region Interior Ministry)

Russian scientists investigating the meteorite explosion in the Urals explained the nature of the event that caused havoc in the region. NASA said the shockwave force was equal to a 500-kiloton explosion – 30 times the Hiroshima blast.

­The object was identified as a solitary 10-ton bolide by the Russian Academy of Sciences (RAN). Bolides, or bright fireballs, are large meteors that explode in the lower atmosphere, and unlike meteorite showers they can be dangerous, scientists explained.

The Chelyabinsk fireball entered the atmosphere moving at a speed of about 20 km/s. The object, which was several meters in diameter, then burst into pieces at a height of 30-50 km above the ground, RAN reported.

Three consecutive explosions shattered the meteorite further. Large fragments moving at a high speed caused a powerful flash and a strong shockwave, with most of its energy released at a height of 5 to 15 km above the earth, with the atmosphere absorbing most of that energy.

NASA has increased its estimate of the energy released during the blast to nearly 500 kilotons of TNT. The calculations were based on the data from infrasound stations across the globe, some being over 6,500 kilometers away from Chelyabinsk. In comparison, the US atom bomb 'Little Boy' destroyed Hiroshima in 1945 with only 16 kilotons.

­The impact and the sound of the blast reached the ground minutes after the explosion, causing havoc and panic in Chelyabinsk. While most of the object burned down during the fall, the remaining parts showered over the region, possibly adding to the damage and injuries.

The actual power of the blast is still being discussed, with some scientists estimating it as low as 0.1 kilotons and others saying it could be nearly 500 kilotons, depending on the height the explosion was registered. Conflicting reports also centered on the trajectory of the falling body.

The combustion products won’t stay in the atmosphere for long, and will soon come down with precipitation, Russian scientists said. The meteorite is believed to have caused no significant pollution, but the elements it emitted could only be identified after studying its fragments, they added. So far, RAN and Emergency services have denied the possibility of radioactive pollution.


MET-7 view (Copyright 2013 © EUMETSAT)

Russian space agency Roscosmos earlier admitted they did not track the meteorite that fell near Chelyabinsk, although several other flybys were detected by Roshydromet overnight. “Our ground facilities and, as I understand, those abroad too did not monitor this celestial body,” the agency spokesman said.

Astronomers around the globe didn’t notice the object coming either, and rushed in search of its traces on satellite images after the news spread.

“Objects like that are nearly impossible to see until a day or two before impact,” Timothy Spahr of the Minor Planet Center in Cambridge, Massachusetts told Nature Magazine.

Although the meteor was relatively small to detect, some argued its blast was comparable with the power of a nuclear bomb.

According to Canadian astronomer Margaret Campbell-Brown, the blast could be even more powerful than North Korea’s recent nuclear test. Citing the data from two infrasound stations near the impact site, she estimated the object to be 15 meters in diameter with a mass of around 40 tons.

“That would make it the biggest object recorded to hit the Earth since Tunguska,” Campbell-Brown told Nature Magazine.

Most scientists both in Russia and abroad do not believe the Chelyabinsk bolide had anything to do with the asteroid 2012 DA14, which is expected to fly by just hours later.


Weather sattelite Meteosat 10 has taken an image of the meteriote shortly after entering the atmosphere (Copyright 2013 © EUMETSAT)


Weather sattelite Meteosat 10 has taken an image of the meteriote shortly after entering the atmosphere (Copyright 2013 © EUMETSAT)


TOPICS: News/Current Events; Russia
KEYWORDS: catastrophism; chebarkul; chelyabinsk; fireball; meteor; metour; russia; science
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1 posted on 02/16/2013 11:40:16 AM PST by Ernest_at_the_Beach
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To: BenLurkin; SunkenCiv

More Images from Satellites.


2 posted on 02/16/2013 11:43:49 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: All
NY Times.....H/T to Drudge:

Shock Wave of Fireball Meteor Rattles Siberia, Injuring 1,200

3 posted on 02/16/2013 11:45:34 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: All
And :

Meteor Russia incident precedes California fireball reports

4 posted on 02/16/2013 11:47:48 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: All
Collection of Images at this link:

https://www.google.com/search?q=Fireball+Meteor&hl=en&client=firefox-a&hs=iWo&rls=org.mozilla:en-US:unofficial&channel=rcs&tbm=isch&tbo=u&source=univ&sa=X&ei=hNkfUcOfC-j5iwLPsoDgCQ&ved=0CEcQsAQ&biw=1920&bih=824&sei=2-AfUebTBunQigLGvYCAAg

5 posted on 02/16/2013 11:50:20 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: All

6 posted on 02/16/2013 11:52:24 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach

How much global warming can we expect from this extraterrestrial event?

Maybe I should put in for a grant to study this now...


7 posted on 02/16/2013 11:54:14 AM PST by a fool in paradise (America 2013 - STUCK ON STUPID)
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To: Ernest_at_the_Beach

Think of the benefit to the world if it had exploded above Mecca. Ironic fate for a bunch of meteorite worshippers. What a waste of space debris.


8 posted on 02/16/2013 11:55:53 AM PST by ClearBlueSky
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To: NormsRevenge; SierraWasp; Grampa Dave; tubebender
Guess the California Metorite was after the Russian Fireball.

Anyone see it?

9 posted on 02/16/2013 11:57:01 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: a fool in paradise

LOL!


10 posted on 02/16/2013 11:58:23 AM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach

That’s the biggest icehole I have seen near Chelyabinsk!


11 posted on 02/16/2013 12:00:22 PM PST by Wally_Kalbacken
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To: Ernest_at_the_Beach
A Russian policeman works near an ice hole,

I feel his pain. I work with a few ice holes myself.

12 posted on 02/16/2013 12:00:30 PM PST by SIDENET (I've drawn my line in the sand.)
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To: All
Not all of the images at link ---Post #5 are from the Russian meteroite.

But i believe this one is.


13 posted on 02/16/2013 12:03:22 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: TigersEye; Marine_Uncle; justa-hairyape; onyx
MY EYES

That would rattle one.....

14 posted on 02/16/2013 12:06:36 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach
it looked like a nuke going off...

15 posted on 02/16/2013 12:17:42 PM PST by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -ww- NO Pity for the LAZY)
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To: All
Video and story for image at #13:

Everything you need to know about meteor strikes

**********************************EXCERPTS******************************************

Incidents like the one over Russia happen roughly once every five years, and there's little we can do to predict them

*********************************snip********************************************

Check out footage of Friday's strike over Russia:

Youtube --click here

16 posted on 02/16/2013 12:19:03 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Chode
And then the shock wave hit.....

Youtube with sound effects and ....much vocalization from the local russians.

17 posted on 02/16/2013 12:22:10 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach
"While most of the object burned down during the fall,"

To a gas?

18 posted on 02/16/2013 12:27:37 PM PST by Paladin2
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To: Ernest_at_the_Beach

Wow. I’ve seen those before. I saw one in Texas about ‘70, looking out over the Gulf of Mexico at night. It disappeared over the horizon, still a fireball - actually there were 3 - 1 large, two small - pretty close together. They really do light things up.


19 posted on 02/16/2013 12:35:11 PM PST by no-s (when democracy is displaced by tyranny, the armed citizen still gets to vote)
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To: Ernest_at_the_Beach
yup... that's the traffic-cam video the pic's came from all right

because of fraud i think ALL cars in Russia are required to have video cams in them now and they get all kinds of stuff caught on video

20 posted on 02/16/2013 12:35:38 PM PST by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -ww- NO Pity for the LAZY)
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To: Chode
And we have this one....nice overhead contrail....and then the shock wave arrives....:many seconds later...or even minutes

Youtube ---click here

Many explosions heard after the initial one.....

21 posted on 02/16/2013 12:37:31 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach

20 km/s is something like 65,000 ft / s

That would definitely leave a mark.


22 posted on 02/16/2013 12:38:51 PM PST by absalom01 (You should do your duty in all things. You cannot do more, and you should never wish to do less.)
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To: no-s; TigersEye; Marine_Uncle; NormsRevenge; SunkenCiv; blam

See # 21....shock wave arrives with a big BOOM and many smallers follow,.,,Contrail over head....as girl talks on her cell phone quietly till the big moment.


23 posted on 02/16/2013 12:41:59 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach; martin_fierro

Blow’d Up!!
http://www.youtube.com/watch?v=td4VEGiIQmk


24 posted on 02/16/2013 12:44:42 PM PST by abb
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To: absalom01

They are lucky it was that high up. If 500kt went off at say 5000 feet the city would’ve been leveled.


25 posted on 02/16/2013 12:45:14 PM PST by Monty22002
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To: Ernest_at_the_Beach
well the say it came in at 20k/s, so it was for sure way ahead of the shockwave...
26 posted on 02/16/2013 12:47:26 PM PST by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -ww- NO Pity for the LAZY)
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To: Ernest_at_the_Beach
iirc there should be a sonic boom for every multiple of the sound barrier
27 posted on 02/16/2013 12:49:35 PM PST by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -ww- NO Pity for the LAZY)
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To: Ernest_at_the_Beach

Kabooom.


28 posted on 02/16/2013 12:53:00 PM PST by Marine_Uncle (I'm going John Galt slowly.... But. Honor must be earned.)
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To: Marine_Uncle

Be sure and see the Youtube ....at #21...talk about sound effects,....sounds like multiple artillery shots going off.


29 posted on 02/16/2013 12:56:46 PM PST by Ernest_at_the_Beach ((The Global Warming Hoax was a Criminal Act....where is Al Gore?))
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To: Ernest_at_the_Beach

What an icehole.


30 posted on 02/16/2013 12:57:04 PM PST by NittanyLion
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To: Ernest_at_the_Beach

NASA is saying more like 7000-10,000 tons. A 15 meter diameter sphere of iron would weight about 14,000 tons, of water like 1,700 tons (displacement of WW-II destroyer). A one ton sphere of iron would be about 1.3 m (four feet) across.


31 posted on 02/16/2013 12:59:28 PM PST by Lonesome in Massachussets (What word begins with "O" and ends in economic collapse?)
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To: Ernest_at_the_Beach
From the article...

...and unlike meteorite showers they can be dangerous, scientists explained.

No kidding!

32 posted on 02/16/2013 1:00:45 PM PST by Jane Long
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To: ClearBlueSky
Think of the benefit to the world if it had exploded above Mecca.

The world could also consider itself lucky that the meteor didn't go over Mecca and destroy it. The Muslims all over the world would have immediately blamed it on Israel and the U.S., and wWIII cold have broken out. Jumping to conclusions would have been first, and investigations would have come after war had already broken out.
33 posted on 02/16/2013 1:01:44 PM PST by adorno (Y)
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To: Lonesome in Massachussets
NASA is saying more like 7000-10,000 tons.

I have seen this estimate also; what I don't understand is where are the big pieces and big craters. Yes, the outer portion can vaporize, but the inner cores of the pieces are still going to be not much above absolute zero. Is that idea that the whole thing detonated into dust and a few pieces of pea gravel that ended up in the lake or somewhere?

34 posted on 02/16/2013 1:08:38 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: a fool in paradise
How much global warming can we expect from this extraterrestrial event?

Well, considering this was punishment from Gaia for not fully acknowledging man-caused global warming and failing to stop all carbon commerce to appease her, I'd say the answer to the question is unknown.

35 posted on 02/16/2013 1:13:04 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: Lonesome in Massachussets

If this was an iron it would have hit, most probably. Based on NASA’s numbers for the diameter and weight, it would have been a slightly-denser than average stony meteorite.

However, entering the NASA parameters and the angle in this calculator (About 20 degrees) you don’t end up with nearly enough kilotons for the explosion, or enough overpressure to break glass.

http://impact.ese.ic.ac.uk/cgi-bin/crater.cgi?dist=0&distanceUnits=1&diam=17&diameterUnits=1&pdens=3526&pdens_select=3000&vel=18&velocityUnits=1&theta=10&wdepth=&wdepthUnits=1&tdens=2500


36 posted on 02/16/2013 1:13:20 PM PST by Strategerist
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To: SIDENET
A Russian policeman works near an ice hole,

I "googled" that image and all I can get is Putin standing by Ozero.

37 posted on 02/16/2013 1:14:10 PM PST by BerryDingle (I know how to deal with communists, I still wear their scars on my back from Hollywood-Ronald Reagan)
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To: steve86

The pieces end up at terminal velocity and just sort of go kerplunk, without a crater.

I suspect they’re not looking far enough down the track. Also it’s a heavily forested area, and a lot of snow as well.


38 posted on 02/16/2013 1:15:53 PM PST by Strategerist
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To: Ernest_at_the_Beach
Many explosions heard after the initial one.....

These have to be sonic booms from the various fragments.

39 posted on 02/16/2013 1:20:05 PM PST by dr_lew
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To: Strategerist

Thanks. Exploding fireball reported over/near Cuba also, in case you hadn’t seen the reports.


40 posted on 02/16/2013 1:23:15 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: Chode
iirc there should be a sonic boom for every multiple of the sound barrier

Geez, I don't think so! Why would there be? The angle of the shock wave to the flight path just gets steeper as the Mach number increases. I believe at high Mach numbers, there are qualitatively new effects, but this is due to intensification of the shock front.

The double boom from the Space Shuttle was due to two separate shock waves orginating from the nose and the tail, I think.

41 posted on 02/16/2013 1:28:07 PM PST by dr_lew
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To: Strategerist
Also, it occurred to me that around here, Ephrata Fan -- Columbia Basin area of Washington state, there are so many boulders strewn around from the Great Missoula Flood that it would be very difficult to pick out a new one, unless you knew the area intimately or carefully examined each and every one.

Some are more memorable:


42 posted on 02/16/2013 1:28:21 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: Ernest_at_the_Beach
"Astronomers around the globe didn’t notice the object coming either,..."

Now that's a REAL problem. Climate Change indeed.

43 posted on 02/16/2013 1:30:03 PM PST by Paladin2
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To: dr_lew

I think he’s right about harmonics but not sure if those are audible.


44 posted on 02/16/2013 1:30:25 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: steve86

Smaller fireballs are extremely common events, which often wouldn’t make any more than the local media previously.

It’s the “attention effect” once again.


45 posted on 02/16/2013 1:32:23 PM PST by Strategerist
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To: Strategerist

But the Cuba fireball detonation is reported to have shaken windows, which is definitely not an everyday thing.


46 posted on 02/16/2013 1:35:25 PM PST by steve86 (Acerbic by Nature, not Nurture™)
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To: Ernest_at_the_Beach
This is as close to witnessing anything like this as I've ever been. And this is nothing in comparison but it is pretty awesome. Shockley's "Shockwave" Jet Truck
47 posted on 02/16/2013 1:35:25 PM PST by 444Flyer (Obama killed the Twinkie, but not the Terrorists in Benghazi. What's wrong with this picture?)
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To: Lonesome in Massachussets

There’s going to be a documentary on this at 8PM Eastern tonight on the Science Channel (my cable’s guide hasn’t updated to show this yet.)


48 posted on 02/16/2013 1:36:00 PM PST by Strategerist
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To: dr_lew
the shuttle is what i based it on but never though of the tail creating it's own sonic boom... guess yer right
49 posted on 02/16/2013 1:38:08 PM PST by Chode (Stand UP and Be Counted, or line up and be numbered - *DTOM* -ww- NO Pity for the LAZY)
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To: Ernest_at_the_Beach

What the heck was THAT?

50 posted on 02/16/2013 1:38:53 PM PST by jaz.357 (Contrary To Ordinary)
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