Exploring Hydrocarbon Depletion
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Turns out it's not such a crazy argument after all.
Scientists link melting glaciers to earthquakes
Experts ponder whether tectonic activity increasing
Some scientists theorize that the sudden melting of glaciers due to man-made climate change is lightening the load on the Earth's surface, allowing its mantle to rebound upwards and causing plates to become unstuck.
These scientists point to the historical increase in volcanic and earthquake activity that occurred about 12,000 years ago when the glaciers that covered most of Canada in an ice sheet several kilometres thick suddenly melted.
The result was that most of Canada's crust lifted -and is still rising.
Scientists have discovered that the accelerated melting of the Greenland ice sheet over the last 10 years already is lifting the southeastern part of that island several millimetres every year.
The surface of the Earth is elastic. A heavy load such as a glacier will cause it to sink, pushing aside the liquid rock underneath.
The Greenland glacier is about three kilometres at its thickest and it is believed that its weight has depressed sections of the land under the glacier about one kilometre. In fact, the weight of the glacier is so great that significant portions of Greenland have been pushed well below sea level.
"There is certainly some literature that talks about the increased occurrence of volcanic eruptions and the removing of load from the crust by deglaciation," said Martin Sharp, a glaciologist at the University of Alberta. "It changes the stress load in the crust and maybe it opens up routes for lava to come to the surface.
"It is conceivable that there would be some increase in earthquake activity during periods of rapid changes on the Earth's crust."
Other scientists, however, believe tectonic movements similar to the one that caused the Japanese quake are too deep in the Earth to be affected by the pressure releases caused by glacier melt.
rockdoc123 wrote:Sweet Jesus....the guy is a glaciologist not a structural geologist or rock mechanics expert nor someone who works with geophyisics. What he is suggesting is preposterous from the perspective of rock mechanics and what we know about the response of the asthenosphere to uplift.
And Anthony Watts is just a former TV meteorologist.
rockdoc123 wrote:And Anthony Watts is just a former TV meteorologist.
Ok, you obviously think this fellow is correct. Please explain why with particular attention to the points I raised.
Nuclear fuel has melted through base of Fukushima plant
1:06AM BST 09 Jun 2011
The findings of the report, which has been given to the International Atomic Energy Agency, were revealed by the Yomiuri newspaper, which described a "melt-through" as being "far worse than a core meltdown" and "the worst possibility in a nuclear accident."
A spokesman for Tokyo Electric Power Co. said the company is presently revising the road-map for bringing the plant under control, including the time required to achieve cold shutdown of the reactors.
mhr727 wrote:I personally think its the other way around, the 2 major earthquakes that caused Tsunami,s from what i have read and seen, caused a slight variation in the earths axis and or rotation. i,m curious to see if these factors have increased the rate at which the glaciers are retreating. Everything i read states that since 2004 melting has accelerated. and of course it is too soon since the Japan Earthquake/Tsunami to really notice any change but it may be happening now.
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