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Mysterious Earthquakes Off Oregon


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#1 mixingitup

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Posted 13 April 2008 - 12:02 PM

(GRANTS PASS, Ore.) Scientists listening to underwater microphones have detected an unusual swarm of earthquakes off central Oregon, something that often happens before a volcanic eruption except there are no volcanoes in the area.

Scientists don't know exactly what the earthquakes mean, but they could be the result of molten rock rumbling away from the recognized earthquake faults off Oregon, said Robert Dziak, a geophysicist for the National Oceanic and Atmospheric Administration and Oregon State University.

There have been more than 600 quakes over the past 10 days in a basin 150 miles southwest of Newport. The biggest was magnitude 5.4, and two others were more than magnitude 5.0, OSU reported.

On the hydrophones, the quakes sound like low thunder and are unlike anything scientists have heard in 17 years of listening, Dziak said. Some of the quakes have also been detected by earthquake instruments on land.

The hydrophones are left over from a network the Navy used to listen for submarines during the Cold War. They routinely detect passing ships, earthquakes on the ocean bottom and whales calling to one another.

Scientists hope to send out an OSU research ship to take water samples, looking for evidence that sediment has been stirred up and chemicals that would indicate magma is moving up through the Juan de Fuca Plate, Dziak said.

The quakes have not followed the typical pattern of a major shock followed by a series of diminishing aftershocks, and few have been strong enough to be felt on shore.

The Earth's crust is made up of plates that rest on molten rock, which are rubbing together. When the molten rock, or magma, erupts through the crust, it creates volcanoes.

That can happen in the middle of a plate. When the plates lurch against each other, they create earthquakes along the edges.

In this case, the Juan de Fuca Plate is a small piece of crust being crushed between the Pacific Plate and North America, Dziak said.

http://www.time.com/time/nation/article/0,...eed-rss-netzero
Mixin'

#2 LovinLocks

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Posted 16 April 2008 - 04:09 AM

No mystery atall, see a book called "Matthew" chapter 24, verse 7.
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#3 soapaddict

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Posted 20 April 2008 - 03:51 PM

Hrm... maybe the plates are moving again and Nevada will become beachfront property soon?

I don't know how anyone can live in California... west of the tectonic plates... AHHHHH!!!!

#4 LovinLocks

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Posted 20 April 2008 - 05:14 PM

SA,

Have you heard what they say's gonna happen to/with FL?
Namaste,

Lovin' Locks
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#5 mixingitup

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Posted 21 April 2008 - 05:50 PM

And not-so-mysterious quakes here in Indiana. I didn't feel these last 2 but they said the building the tv station is located in South Bend was shaking.

We had one occur around 1990 that made my deck move; that was a strange feeling.
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Posted 22 April 2008 - 11:40 AM

Yes... if the ice on Greenland melts, then it may raise the oceans a few inches, submerging a lot of low land...

BUT! Orlando is 87 feet above sea level, so, all that means is the beach will be a shorter drive:P. hehehe





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