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Big Bangs: 'Stirring' Secrets Of Deadly Supervolcanoes Uncovered
Science Daily ^ | 5-30-2008 | McGill University

Posted on 05/31/2008 2:28:14 PM PDT by blam

Big Bangs: 'Stirring' Secrets Of Deadly Supervolcanoes Uncovered

Supervolcanoes are orders of magnitude greater than any volcanic eruption in historic times. They are capable of causing long-lasting change to weather, threatening the extinction of species, and covering huge areas with lava and ash. (Credit: iStockphoto/Koch Valérie)

ScienceDaily (May 30, 2008) — Researchers from McGill University and the University of British Columbia (UBC) have simulated in the lab the process that can turn ordinary volcanic eruptions into so-called “supervolcanoes,” with potentially devastating worldwide impact.

The study was conducted by Dr. Ben Kennedy and and Dr. Mark Jellinek of UBC’s Department of Earth and Ocean Sciences, and Dr. John Stix, chair of McGill University’s Department of Earth and Planetary Sciences. Their results were published May 25 in the journal Nature Geoscience.

Supervolcanoes are orders of magnitude greater than any volcanic eruption in historic times. They are capable of causing long-lasting change to weather, threatening the extinction of species, and covering huge areas with lava and ash.

Using volcanic models made of plexiglass filled with corn syrup, the researchers simulated how magma in a volcano’s magma chamber might behave if the roof of the chamber caved in during an eruption.

“The magma was being stirred by the roof falling into the magma chamber,” Stix explained. “This causes lots of complicated flow effects that are unique to a supervolcano eruption.”

“There is currently no way to predict a supervolcano eruption,” said Kennedy, a post-doctoral fellow at UBC. “But this new information explains for the first time what happens inside a magma chamber as the roof caves in, and provides insights that could be useful when making hazard maps of such an eruption.”

The eruption of Mount Tambora in Indonesia in 1815 – the only known supervolcano eruption in modern history – was 10 times more powerful than Krakatoa and more than 100 times more powerful than Vesuvius or Mount St. Helens. It caused more than 100,000 deaths in Indonesia alone, and blew a column of ash about 70 kilometres into the atmosphere. The resulting disruptions of the planet’s climate led 1816 to be christened “the year without summer.”

“And this was a small supervolcano,” said Stix. “A really big one could create the equivalent of a global nuclear winter. There would be devastation for many hundreds of kilometres near the eruption and there would be would be global crop failures because of the ash falling from the sky, and even more important, because of the rapid cooling of the climate.”

There are potential supervolcano sites all over the world, most famously under Yellowstone National Park in Wyoming, the setting of the 2005 BBC/Discovery Channel docudrama Supervolcano, which imagined an almost-total collapse of the world economy following an eruption.

Adapted from materials provided by McGill University.


TOPICS: News/Current Events
KEYWORDS: bang; catastrophism; deadly; godsgravesglyphs; supervolcanoes; volcanoes

1 posted on 05/31/2008 2:28:14 PM PDT by blam
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To: SunkenCiv

This is the first time I’ve ever seen the 1815 Tambora eruption listed as a supervolcano, even a small one.


2 posted on 05/31/2008 2:29:48 PM PDT by blam
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To: blam

Great! Something else to worry about!


3 posted on 05/31/2008 2:30:13 PM PDT by FlingWingFlyer (De-Globalize yourself !)
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To: blam

We’re all living on the crust of one gigantic, all-around zit. Sooner or later...


4 posted on 05/31/2008 2:31:43 PM PDT by CarrotAndStick (The articles posted by me needn't necessarily reflect my opinion.)
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To: blam

We’re all going to die!!!!!!


5 posted on 05/31/2008 2:32:49 PM PDT by ninonitti
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To: blam

From WiKi:

Tambora erupted in 1815 with a rating of seven on the Volcanic Explosivity Index, making it the largest eruption since the Lake Taupo eruption in AD 181.The explosion was heard on Sumatra island (more than 2,000 km or 1,200 mi away). Heavy volcanic ash falls were observed as far away as Borneo, Sulawesi, Java and Maluku islands. The death toll was at least 71,000 people (the most deadly eruption of all time), of whom 11,000–12,000 were killed directly by the eruption; the often-cited figure of 92,000 people killed is believed to be an overestimate. The eruption created global climate anomalies; 1816 became known as the Year Without a Summer because of the effect on North American and European weather. Agricultural crops failed and livestock died in much of the Northern Hemisphere, resulting in the worst famine of the 19th century.

http://en.wikipedia.org/wiki/Mount_Tambora#cite_note-Oppenheimer2003-3


6 posted on 05/31/2008 2:34:34 PM PDT by CarrotAndStick (The articles posted by me needn't necessarily reflect my opinion.)
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To: blam
Using volcanic models made of plexiglass filled with corn syrup

Big Science meet Big Corn

7 posted on 05/31/2008 2:35:47 PM PDT by ninonitti
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To: blam

Clearly, We Are Doomed. Does the article say if Gorebal Warming causes super volcanoes?


8 posted on 05/31/2008 2:35:54 PM PDT by jsh3180
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Comment #9 Removed by Moderator

To: blam

A current volcano, Chaiten in Chile, dramatically erupted after 9000+ years on May 5, and, it is still erupting. There have been concerns that as it weakens in its eruption, there might be a chaldera collapse and a resultant pyroclastic flow....some reports do not fear an explosion. This volcano is worth following, even as the news media have lost interest. One of the most dramatic volcano eruption photos ever taken is from this eruption. It is here...

http://icono-clast.blogspot.com/2008/05/volcano.html

and another less dramatic here: http://jeanhuets.livejournal.com/32840.html


10 posted on 05/31/2008 2:46:57 PM PDT by givemELL
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To: Young Werther
This may not be a super eruption but I thought it was worth viewing!

Well, those ARE super!

11 posted on 05/31/2008 2:53:10 PM PDT by SIDENET (Hubba Hubba...)
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To: blam

We live on an active planet. An inactive planet would not be hospitable to life. It’s a trade off. Enjoy your life while it is yours.


12 posted on 05/31/2008 3:15:11 PM PDT by RobinOfKingston (Man, that's stupid ... even by congressional standards.)
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To: blam
"This is the first time I’ve ever seen the 1815 Tambora eruption listed as a supervolcano, even a small one."

Suppose I was having trouble proving super volcanoes ever occurred. It would be tempting to look back on the limited records at hand, pick out a big one, and move the definition to accommodate my theory.

13 posted on 05/31/2008 4:20:13 PM PDT by labette ( Doctor of Thinkology)
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To: blam
Never underestimate the fear mongering of which Liberal scientists are capable, when they are on the hunt for grant money.

Chicken Little is ALIVE and very, very WELL!

One can only hope that a super volcano eruption will happen soon, to save us from global warming and the melting of all ice on the surface of Mother Earth ( sarc. off).

14 posted on 05/31/2008 4:47:54 PM PDT by Candor7 (Fascism? All it takes is for good men to say nothing.)
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To: labette
Suppose I was having trouble proving super volcanoes ever occurred. It would be tempting to look back on the limited records at hand, pick out a big one, and move the definition to accommodate my theory.

Nobody has the remotest problem proving the existence of supervolcanoes. The evidence is obvious.

There's no real official definition of a supervolcano. Tambora was indeed pretty small for one.

15 posted on 05/31/2008 5:59:46 PM PDT by Strategerist
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To: Candor7

What’s remotely fear-mongering about this article? And what remotest scrap of evidence do you have that the scientists are “liberal?”


16 posted on 05/31/2008 6:00:43 PM PDT by Strategerist
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To: blam
The resulting disruptions of the planet’s climate led 1816 to be christened “the year without summer.”

Apparently the climate absorbed that glich and returned to "normal" within a couple of years. Obviously there was no cascading effect on the climate in spite of an event so tremendous that its effects were almost immediate.

17 posted on 05/31/2008 7:21:30 PM PDT by TigersEye (Berlin 1936. Olympics for murdering regimes. Beijing 2008.)
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To: Candor7

I’m unclear why snide comments about global warming must be dragged onto any discussion of science. That a scam is being run in one field doesn’t invalidate all scientific investigation and analysis. Dynamic-earth Geology is a fairly straight-forward field of study.


18 posted on 05/31/2008 8:19:48 PM PDT by tlb
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To: blam; 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BenLurkin; ...
Thanks blam.
This is the first time I've ever seen the 1815 Tambora eruption listed as a supervolcano, even a small one.
Hey, standards have changed as more data (quantity and quality) has accumulated.
 
Catastrophism
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19 posted on 05/31/2008 9:45:50 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 3AngelaD; 49th; ...

· join list or digest · view topics · view or post blog · bookmark · post a topic ·

 
Gods
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Glyphs
Thanks Blam.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are Blam, StayAt HomeMother, and Ernest_at_the_Beach
 

· Google · Archaeologica · ArchaeoBlog · Archaeology magazine · Biblical Archaeology Society ·
· Mirabilis · Texas AM Anthropology News · Yahoo Anthro & Archaeo ·
· History or Science & Nature Podcasts · Excerpt, or Link only? · cgk's list of ping lists ·


20 posted on 05/31/2008 9:48:25 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
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To: FlingWingFlyer
Nah, too small. If you want to worry, Google Earth Toba. That huge lake in Sumatra is the result of a big blast about 75,000 years ago.

However, even this did not seem to affect the length or depth of the ice age that was going on at the time. Although the temperature did drop at that time, the temperature pattern doesn't really differ much from the previous ice age. So maybe, be happy, don't worry.

http://www.andaman.org/BOOK/originals/Weber-Toba/textr.htm

21 posted on 05/31/2008 10:01:24 PM PDT by VanShuyten ("Ah! but it was something to have at least a choice of nightmares.")
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To: VanShuyten
The earth adjust.

It is that simple and that complex. We are only beginning to grasp the vast amount of systems that keep our planet friendly and habitable much less know what they do.

22 posted on 05/31/2008 10:10:07 PM PDT by Harmless Teddy Bear (A good marriage is like a casserole, only those responsible for it really know what goes into it.)
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To: CarrotAndStick
That was vivid...
23 posted on 05/31/2008 10:42:49 PM PDT by null and void (Capitalism=>Audi, BMW, Porsche, Volkswagon. |WALL| Communism=>Trabi. Any questions?)
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To: blam
Using volcanic models made of plexiglass filled with corn syrup, the researchers simulated how magma in a volcano’s magma chamber might behave if the roof of the chamber caved in during an eruption.

The earth is has a yummy, sugary candy center?

24 posted on 05/31/2008 10:50:28 PM PDT by Grizzled Bear ("Does not play well with others.")
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To: blam

Whenever the Supervolcano under Yellowstone Nat’l Park goes off it will be beyond castrophic, 8,000x as much ash and lava as Mt. St. Helens. Hopefully it won’t happen for at least a few thousand years more, and maybe humans will have some way of dealing better with the aftermath:

http://dsc.discovery.com/convergence/supervolcano/under/under.html


25 posted on 05/31/2008 10:54:03 PM PDT by Enchante (Barack Chamberlain: My 1930s Appeasement Policy Goes Well With My 1960s Socialist Policies!)
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To: Enchante

Even the eruptions at Yellowstone pale in comparison with Toba.

Two hundred billion tons of sulphur dioxide alone.

Worldwide, the temperature plummeted 5-10 degrees Fahrenheit, spawning a mini ice age that lasted a thousand years.

Except for the 2-5 thousand humans who survived, we wouldn’t be here.


26 posted on 05/31/2008 11:05:32 PM PDT by djf
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To: null and void
That was vivid...

Refresh yourself with 'space beer'!

27 posted on 06/01/2008 1:00:48 AM PDT by CarrotAndStick (The articles posted by me needn't necessarily reflect my opinion.)
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To: SunkenCiv

Look at the bright side. If man-made global warming exists, we just found a cure for it!


28 posted on 06/01/2008 4:53:24 AM PDT by Berosus (Supports the troops, bring them home -- from the Balkans.)
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To: ninonitti
My thought on the Plexiglas was some poor kid's ant farm was absconded.
29 posted on 06/01/2008 7:23:39 AM PDT by Cold Heart
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To: SunkenCiv

This sounds scary and stuff. There’s a computer model for it, has anyone told Al Gore?

He could raise awareness and make a documentary about it. Maybe we could get congress to make it illegal for volcanoes to go all supery, or something.


30 posted on 06/01/2008 7:40:06 AM PDT by Grimmy (equivocation is but the first step along the road to capitulation)
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To: blam

Contingency plan: lots of short season, cool weather, low light crops.


31 posted on 06/01/2008 8:13:23 AM PDT by JimRed ("Hey, hey, Teddy K., how many girls did you drown today?" TERM LIMITS, NOW!)
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To: djf
Except for the 2-5 thousand humans who survived, we wouldn’t be here.

And they made it only because they were airlifted out by a fleet of UFO's piloted by Greys.

32 posted on 06/01/2008 8:24:56 AM PDT by ninonitti
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To: Grimmy

;’) If there’s any way to conduct such a scam, I’m sure Gore will find it. Beats workin’.


33 posted on 06/01/2008 9:08:00 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
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To: Berosus

Dunno what I’m supposed to do with this Lava Light... I mean, is it risky to keep in the house? Will it go “super” on my ass?


34 posted on 06/01/2008 9:08:54 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
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To: blam

Amazing how quickly these archaeology/geology threads turn sour. I don’t post science threads anymore.


35 posted on 06/01/2008 9:10:57 AM PDT by RightWhale (We see the polygons)
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To: Godzilla

Ping to post # 10.


36 posted on 06/01/2008 6:38:49 PM PDT by Domestic Church (AMDG...)
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To: ninonitti

“...a fleet of UFO’s piloted by Greys”

What the heck is a grey and why aren’t they purple?


37 posted on 06/01/2008 6:49:21 PM PDT by Domestic Church (AMDG...)
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To: Domestic Church

What the heck is a grey and why aren’t they purple?

Beats me, but according to this they do tend towards a bluish grey:

http://www.beyondweird.com/ufos/Grey_Profile_1996.html


38 posted on 06/01/2008 8:05:21 PM PDT by ninonitti
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To: Domestic Church

thanks for the ping DC, have’t seen your posts in a while - how are ya?


39 posted on 06/02/2008 7:52:51 AM PDT by Godzilla (Chaos, panic, and disorder .... my work here is done.)
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To: Enchante

From the maps I’ve seen Denver is right on the border of the kill zone from a Yellowstone eruption. I hope it won’t be a few thousand more years!


40 posted on 06/02/2008 9:51:56 AM PDT by colorado tanker (Number nine, number nine, number nine . . .)
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To: djf

I’ve seen those reports, and I’ve tried to reconcile them with temperature data from Greenland ice cores. Although there is a drop in temperature at the point of increased sulfur deposits from Toba, the temp graph of the last ice age looks very similar to the temp graph of the one just before that. Perhaps the drop in temperature and rebound to the “normal” rate of change was so rapid that it doesn’t show up well in the ice cores. A volcanic winter lasting a few centuries, or even just a few decades, might have been long enough to create the human bottleneck, but not long enough to have altered the general climate trend nor have shown up in the core samples.


41 posted on 06/02/2008 10:45:03 PM PDT by VanShuyten ("Ah! but it was something to have at least a choice of nightmares.")
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To: ninonitti

“Using volcanic models made of plexiglass filled with corn syrup”

I wonder if they ended up looking like Marsha(?) Brady after the experiment?


42 posted on 06/02/2008 10:51:11 PM PDT by 21twelve (Don't wish for peace. Pray for Victory.)
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To: VanShuyten

The climate guesstimates I heard were all based on O16-O18 ratio in microfauna from sea floor sediments.

How well that correlates to other data we will never be sure, but the truth is probably somewhere in the middle.

Toba was a monster event.

http://volcano.und.edu/vwdocs/volc_images/southeast_asia/indonesia/toba.html


43 posted on 06/02/2008 11:00:29 PM PDT by djf (We'll have Superman for President, have Robin save the day....)
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