tagged w/ volcanic eruptions
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There is growing evidence that some of the Earth’s most catastrophic geological events were triggered by changes in the climate.
The melting of ice sheets and changes in sea level served as triggers to some of the world’s largest earthquakes and volcanic eruptions, according to British geologist Bill McGuire.
The best evidence of climatic influence on geology is from around 12,000 years ago, the end of the last ice age. Recent studies of volcanic deposits, have shown that this period of rapid change, as the ice sheets retreated, coincided with an outburst in geological activity.
Volcanic eruptions increased about 50 fold after the ice sheet retreated, and took around 1,500 years to return to the previous level.
McGuire argues that the weight of ice, two kilometers thick over Iceland, kept pressure on the volcanoes and suppressed the eruptions. As the ice sheet retreated, the surface of the ground in some places rose up by hundreds of meters, relieving the pressure.
Freysteinn Sigmundsson of the Nordic Volcanological Center at the University of Iceland in Reykjavik, is quoted as saying “Reduction of pressure enabled mantle rocks to melt, creating a zone of magma upwelling underneath Iceland.”
The production of magma then increased 30 fold, leading to the huge increase in volcanic eruptions.
(click on the link for the complete article)There is growing evidence that some of the Earth’s most catastrophic geological... more
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CNN...
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Strong earthquake strikes Chile; no serious damage reported
By the CNN Wire Staff
updated 2:40 AM EDT, Tue April 17, 2012
Click link to play video
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STORY HIGHLIGHTS
NEW: A 72-year-old man died of a heart attack in an evacuation
A journalist describes what it felt like
The Canadian prime minister is okay
Chile is on the so-called "Ring of Fire"
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(CNN) -- A strong earthquake struck coastal Chile near the port city of Valparaiso late Monday, causing mudslides and some minor damage, the U.S. Geological Survey reported.
The 6.7-magnitude quake knocked out some power and phone lines in the region, authorities said.
The temblor was felt in the capital city, Santiago, located 69 miles from the epicenter. A CNN en Español anchor held onto his desk as the quake rattled the studio during a newscast in Huechurba, a suburb of the capital.
"We could feel the ground shaking," said journalist Richard Madan. "It felt like we were standing on a subway track but multiply that by about 200."
Madan, of CNN's Canadian affiliate CTV, is in Santiago as part of the traveling press for Canadian Prime Minister Stephen Harper's visit there.
Both he and the Canadian delegation were okay, Madan said.
No tsunami warning was issued, according to Chile's Hydrographic and Oceanographic Service, and a preventive evacuation for the area has been lifted. A 72-year-old man died of a heart attack during the evacuation, according to regional Mayor Raul Celis.
Quake rattles Chile, no tsunami warnings
The same part of the country was hit with an 8.8-magnitude earthquake in February 2010, killing hundreds of people.
Chile is on the so-called "Ring of Fire," an arc of volcanoes and fault lines circling the Pacific Basic that is prone to frequent earthquakes and volcanic eruptions.
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CNN en Español's Jose Manuel Rodriguez contributed to this report.
.CNN...
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Strong earthquake strikes Chile; no serious damage reported
By the CNN... more
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RT News...
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RT News line, December 27
13:10 PM
Residents in panic as Indonesian volcano erupts
One of Indonesia’s most active volcanoes, Mount Lokon, erupted on Tuesday. It has caused panic among villagers, but no evacuation has been ordered so far. Two villages of about 10,000 people each have been affected by the ash, which is now no longer being emitted, AFP quotes volcanologists from a monitoring post near the volcano on Sulawesi Island as saying. Lokon’s eruption in 1991 killed a Swiss tourist. When the volcano erupted in July, with huge clouds of ash as high as 3,500 meters, more than 5,200 people were evacuated.
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RT News line, December 27
13:10 PM
Residents in panic as... more
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Everyone is wondering what would happen on March 19 or would be just another day? As the Moon is coming closer to Earth in almost 18 years, it may trigger natural disasters like earthquakes, volcanic eruptions and storms.
:http://www.breakingnewsonline.net/features/7488-will-supermoon-cause-natural-disaster-on-march-19.htmlEveryone is wondering what would happen on March 19 or would be just another day? As... more
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suzane
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added this
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1 year ago
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On March 19th 2011, the moon will make its closest approach to Earth in almost 20 years, possibly triggering earthquakes, volcanic eruptions and other disasters.
link :http://in.news.yahoo.com/blogs/geewhiz/supermoon-may-cause-natural-disasters-next-week-20110309-020911-225.htmlOn March 19th 2011, the moon will make its closest approach to Earth in almost 20... more
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Ok, call me crazy, but even though I know what is being spewed out from beneath the Earth, some parts of this actually look beautiful to see. The Earth flexes its muscles and breathes just like humans do. And I do not know if this is a sign of anything other than the Earth flexing those muscles, but one thing is for sure...man is not omnipotent over nature and should never think he is. That kind of arrogance is what has brought us to the tipping point.
Description from video:
'April 14, 2010 — The 2nd Eyjafjallajökull volcano eruption in south Iceland for 2010. It started on 14.04.2010. GPS coordinates of the eruption: 63.629° N, 19.630° W. Video by Icelandic National TV stations RÚV and Stöð 2. Music by Jonn Serrie, The Legacy, Spirit Keepers. Date: 14.04.2010. More videos will follow.'Ok, call me crazy, but even though I know what is being spewed out from beneath the... more
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Hundreds of earthquakes rippled through Yellowstone National Park, Wyoming, in late December and early January, prompting fears that the shaking might trigger dangerous steam explosions.
Magma and steam permeate the rock beneath Yellowstone, and the motion of these fluids is thought to be responsible for the thousands of small earthquakes recorded in and around the park each year.
Crater evidence - Yellowstone, which sits atop a supervolcano, is pockmarked with craters thought to have been produced this way, and geologists estimate an explosion big enough to make a 100-metre crater happens there about every 200 years.
At the time of writing, though, the swarm was subsiding with no reports of such an event. "It hasn't stopped, but it has reduced markedly in the last couple of days," said Robert Smith of the University of Utah on Monday.
There are no signs of any on the way, either, said Smith, who monitors Yellowstone's geologic activity.
The quakes appear to be concentrated along a fault beneath the park. Further analysis should reveal whether they were triggered by forces associated with the fault, activity of hot fluids beneath the surface, or some other cause, he says.Hundreds of earthquakes rippled through Yellowstone National Park, Wyoming, in late... more
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