Dr. John Brignell's WARMLIST
~A complete list of things caused by global warming.~
Posted on 04/17/2010 5:17:38 AM PDT by jerry557
OSLO (Reuters) – A thaw of Iceland's ice caps in coming decades caused by climate change may trigger more volcanic eruptions by removing a vast weight and freeing magma from deep below ground, scientists said on Friday.
They said there was no sign that the current eruption from below the Eyjafjallajokull glacier that has paralysed flights over northern Europe was linked to global warming. The glacier is too small and light to affect local geology.
"Our work suggests that eventually there will be either somewhat larger eruptions or more frequent eruptions in Iceland in coming decades," said Freysteinn Sigmundsson, a vulcanologist at the University of Iceland.
"Global warming melts ice and this can influence magmatic systems," he told Reuters. The end of the Ice Age 10,000 years ago coincided with a surge in volcanic activity in Iceland, apparently because huge ice caps thinned and the land rose.
"We believe the reduction of ice has not been important in triggering this latest eruption," he said of Eyjafjallajokull. "The eruption is happening under a relatively small ice cap."
Carolina Pagli, a geophysicist at the University of Leeds in England, said there were risks that climate change could also trigger volcanic eruptions or earthquakes in places such as Mount Erebus in Antarctica, the Aleutian islands of Alaska or Patagonia in South America.
"The effects would be biggest with ice-capped volcanoes," she said. "If you remove a load that is big enough you will also have an effect at depths on magma production."
She and Sigmundsson wrote a 2008 paper in the scientific journal Geophysical Research Letters about possible links between global warming and Icelandic volcanoes.
(Excerpt) Read more at news.yahoo.com ...
These people will never, ever stop. Ever.
OH no they didn’t
lol
Anyone with half a mind would think that the Volcano’s are causing the ice to melt, but not these scientists. The melting is causing the volcano’s.
Is this really science? Maybe it’s me but I dont see how a couple of degrees in temperature can make magma come up from the earth and cause a volcanic eruption.
One thing is sure one of us is wrong.
Rush Limbaugh was right! “It won’t take them long to blame this on global warming”. My main man was right again!
Yeah, I'm buying it...
On the other hand it may prevent future eruptions by relieving downward pressure, or may have no effect at all. We really don’t know, but since we need to publish articles to get tenure we decided to write this article anyway.
Yes. appaently if you have enough ice, you can plug a magma vent.
They seem to be relying on the ignorance of the masses.
Ok, here’s what is really going on. geologic evolution,
The tectonic plates are moving. The opening of the mid Atlantic rift allows magama to flow upward at the Icelandic openings that are called volcanoes. While they exhibit volcanic activity, they are in fact lengthwise splits in the earth crust and are spreading.
Meanwhile, thousands of miles away, other plate edges are being scrunched together. This scrunching produces earth quake.
As the Mid Atlantic rift opens wider, the other plate boundaries narrow and there is subduction and quakes.
For every action, there is equal and opposite reaction
Excellent illustration
Remember boys and girls, only one kind of heat causes global warming.
The heat from the sun and the heat from the earth have no affect on the ice above a volcano, only the heat from burning evil fossil fuels can do that.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.