[img]http://images.sciencedaily.com/2012/12/121219133551.jpg[/img]
[quote]The Villarica volcanoe in Chile. (Credit: M. Nicolai, GEOMAR)[/quote]
[quote="Science Daily"]It has long been known that volcanic activity can cause short-term variations in climate. Now, researchers at the GEOMAR Helmholtz Centre for Ocean Research Kiel (Germany), together with colleagues from Harvard University (Cambridge, Massachusetts, USA) have found evidence that the reverse process also occurs: Climate affects volcanic activity.
Their study is now online in the international journal Geology.
In 1991, it was a disaster for the villages nearby the erupting Philippine volcano Pinatubo. But the effects were felt even as far away as Europe. The volcano threw up many tons of ash and other particles into the atmosphere causing less sunlight than usual to reach Earth's surface. For the first few years after the eruption, global temperatures dropped by half a degree. In general, volcanic eruptions can have a strong short-term impact on climate. Conversely, the idea that climate may also affect volcanic eruptions on a global scale and over long periods of time is completely new. Researchers at GEOMAR Helmholtz Centre for Ocean Research Kiel (Germany) and Harvard University in Massachusetts (USA) have now found strong evidence for this relationship from major volcanic eruptions around the Pacific Ocean over the past 1 million years. They have presented their results in the latest issue of the international journal "Geology."
The basic evidence for the discovery came from the work of the Collaborative Research Centre "Fluids and Volatiles in Subduction Zones (SFB 574). For more than ten years the project has been extensively exploring volcanoes of Central America. "Among others pieces of evidence, we have observations of ash layers in the seabed and have reconstructed the history of volcanic eruptions for the past 460,000 years," says GEOMAR volcanologist Dr Steffen Kutterolf, who has been with SFB 574 since its founding. Particular patterns started to appear. "There were periods when we found significantly more large eruptions than in others" says Kutterolf, the lead author of the Geology article.After comparing these patterns with the climate history, there was an amazing match. The periods of high volcanic activity followed fast, global temperature increases and associated rapid ice melting.
To expand the scope of the discoveries, Dr Kutterolf and his colleagues studied other cores from the entire Pacific region. These cores had been collected as part of the International Integrated Ocean Drilling Program (IODP) and its predecessor programmes. They record more than a million years of Earth's history. "In fact, we found the same pattern from these cores as in Central America" says geophysicist Dr Marion Jegen from GEOMAR, who also participated in the recent study.Together with colleagues at Harvard University, the geologists and geophysicists searched for a possible explanation. They found it with the help of geological computer models. "In times of global warming, the glaciers are melting on the continents relatively quickly. At the same time the sea level rises. The weight on the continents decreases, while the weight on the oceanic tectonic plates increases. Thus, the stress changes within in the Earth to open more routes for ascending magma" says Dr Jegen.
The rate of global cooling at the end of the warm phases is much slower, so there are less dramatic stress changes during these times. "If you follow the natural climate cycles, we are currently at the end of a really warm phase. Therefore, things are volcanically quieter now. The impact from human-made warming is still unclear based on our current understanding" says Dr Kutterolf. The next step is to investigate shorter-term historical variations to better understand implications for the present day.[/quote]
Source: [url=http://www.sciencedaily.com/releases/2012/12/121219133551.htm]Science Daily[/url]
(Obligatory apology if late here).
I remember learning something like this in the 7th grade. The Earth has a natural climate that it prefers to stay at and when it sways too far one direction, it causes negative effects on the environment which cause the opposite effects to happen. If I recall, my teacher said that melted ice caps increase the water elevation which will put more strain on volcanoes, which in turn can cause more volcanoes to erupt. From here the ash spewed will do as the article says, and block sunlight which will lower temperatures.
fuck
[QUOTE=Zareox7;38902347]I remember learning something like this in the 7th grade. The Earth has a natural climate that it prefers to stay at and when it sways too far one direction, it causes negative effects on the environment which cause the opposite effects to happen. If I recall, my teacher said that melted ice caps increase the water elevation which will put more strain on volcanoes, which in turn can cause more volcanoes to erupt. From here the ash spewed will do as the article says, and block sunlight which will lower temperatures.[/QUOTE]
It's pretty damn cool to see how efficiently the Earth's natural processes constantly work to balance each other out, while never actually finding that balance.
Here's hoping that this doesn't get Yellowstone to finally go up. That wouldn't end well for anyone.
Guys look on the bright side.
Volcanic eruptions make for really pretty pictures.
and death
dont forget death
[QUOTE=343N;38903156]and death
dont forget death[/QUOTE]
Don't be such a downer.
[QUOTE=TheBrokenHobo;38903163]Don't be such a downer.[/QUOTE]
Don't be such an upper. You're a real buzzmaker.
[QUOTE=JeanLuc761;38903077]It's pretty damn cool to see how efficiently the Earth's natural processes constantly work to balance each other out, while never actually finding that balance.
Here's hoping that this doesn't get Yellowstone to finally go up. That wouldn't end well for anyone.[/QUOTE]
Well from what I would assume, all of the volcanoes near water would likely go up first before Yellowstone as its inland. But yeah, the ash causes the temperatures to go back down and the ice reforms and such starts the process all over again. I heard somewhere (don't quote me) that following a great global warming was an equally severe ice age. Although as I said, I heard it from somewhere and I don't remember where.
Good thing I live in an country without volcanic activity.
[QUOTE=Fatfatfatty;38903609]Good thing I live in an country without volcanic activity.[/QUOTE]
Your country must be a very safe from natural disaster. Most people have to put up with earthquake, floods and drought.
If Yellowstone goes off it better blow towards the Pacific and not Atlantic damnit.
[editline]20th December 2012[/editline]
[QUOTE=Fatfatfatty;38903609]Good thing I live in an country without volcanic activity.[/QUOTE]
Plenty of supervolcanoes that would wreck shit no matter where you are.
[QUOTE=Fatfatfatty;38903609]Good thing I live in an country without volcanic activity.[/QUOTE]
While you'll dodge any localized disasters, increased volcanic activity will effect the entire planet via atmospheric changes.
[QUOTE=TheBrokenHobo;38903093]Guys look on the bright side.
Volcanic eruptions make for really pretty pictures.[/QUOTE]
removed first picture because i'm an idiot, point still stands
[IMG]http://i.dailymail.co.uk/i/pix/2010/11/05/article-0-0BEAAC28000005DC-934_634x379.jpg[/IMG]
[B]BEAUTIFUL[/B]
[QUOTE=Lucien1337;38905478][IMG]http://llwproductions.files.wordpress.com/2012/03/world-press-photo-winner-1972-phan-thi-kim-phuc-runs-down-road-with-other-children-after-south-vietnamese-planes-mistakenly-dropped-napal.jpg?w=642[/IMG]
[IMG]http://i.dailymail.co.uk/i/pix/2010/11/05/article-0-0BEAAC28000005DC-934_634x379.jpg[/IMG]
[B]BEAUTIFUL[/B][/QUOTE]
first one isn't a volcanic eruption...
but...but global warming...carbon taxes
it's all bullshit folks
It's what that socialistic Obunku wants you to believe
[QUOTE=teh pirate;38905797]first one isn't a volcanic eruption...[/QUOTE]
It's from Vietnam isn't it?
[QUOTE=Mrglitch2000;38906063]It's from Vietnam isn't it?[/QUOTE]
Accidental napalm drop.
[QUOTE=_Chewgum;38905829]but...but global warming...carbon taxes
it's all bullshit folks[/QUOTE]
Natural or not, the problem(which many seem to not realize) is it isn't going to go down well for us humans.
I don't even know why whether it's natural or not is even a discussion, either way we're going to get fucked if we don't do something about it and all this shitty "natural or man-made" discussion is just stalling any progress we might be able to do to prevent, decrease or slow down the effects.
[QUOTE=Lucien1337;38905478][IMG]http://llwproductions.files.wordpress.com/2012/03/world-press-photo-winner-1972-phan-thi-kim-phuc-runs-down-road-with-other-children-after-south-vietnamese-planes-mistakenly-dropped-napal.jpg?w=642[/IMG]
[IMG]http://i.dailymail.co.uk/i/pix/2010/11/05/article-0-0BEAAC28000005DC-934_634x379.jpg[/IMG]
[B]BEAUTIFUL[/B][/QUOTE]
Both are not volcanic eruptions! This is!
[IMG]http://www.dur.ac.uk/ed.llewellin/images/plinian.jpg[/IMG]
cool right
Yeah it looks cool from a far.
But its like a nuclear bomb in a way; up close, its pretty horrifying.
I thought this was to do with the whole methane clathrate thingummywhatsit that was around a few years ago; nonetheless it is interesting.
Volcanoes are ridiculously cool anyway
[img]http://inapcache.boston.com/universal/site_graphics/blogs/bigpicture/eyja_04_19/e01_23056097.jpg[/img]
Rather frightening but very cool
No source?
[QUOTE=JeanLuc761;38903077]It's pretty damn cool to see how efficiently the Earth's natural processes constantly work to balance each other out, while never actually finding that balance.
Here's hoping that this doesn't get Yellowstone to finally go up. That wouldn't end well for anyone.[/QUOTE]
yeah
I mean
I'd rather not be sucking in heaps of glassy death ask that slice the fuck out of my internally and slowly suffocate / bleed me out.
generally it's one of those "Shitty ways to go" on top of terminal brain cancer and insanely rabid aging.
[QUOTE=Sgt-NiallR;38910042]No source?[/QUOTE]
My bad, source added.
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