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New data: Mega-quake could strike near Seattle
McClatchy via Yahoo ^ | August 16, 2009 | Les Blumenthal

Posted on 08/16/2009 5:31:38 PM PDT by Islander7

WASHINGTON — Using sophisticated seismometers and GPS devices, scientists have been able to track minute movements along two massive tectonic plates colliding 25 miles or so underneath Washington state's Puget Sound basin.

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By comparison, the largest earthquake ever recorded was 9.5 on the Richter scale, in Chile in 1960. The largest in North America was the 9.2 Great Alaska Earthquake in 1964, which killed nine people and spawned a tsunami that struck the Northwest coast. The 1906 San Francisco earthquake, which killed 750 to 2,500 people, was estimated to be an 8.2.

(Excerpt) Read more at news.yahoo.com ...


TOPICS: Culture/Society; Extended News; News/Current Events; US: Washington
KEYWORDS: earthquake; megaquake; seattle; washington
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The last mega-thrust earthquake along the Cascadia subduction zone, estimated at 9.2, was in January 1700 . It produced a tsunami that reached Japan . Cascadia subduction zone mega-thrust earthquakes happen on average every 400 to 500 years, but they can happen as little as 300 years apart or as much as 800.
1 posted on 08/16/2009 5:31:38 PM PDT by Islander7
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To: Islander7
Global Warming. Plus, Bush's fault, too. Cheney probably has something to do with it as well. Along with Palin. And, Pat Robertson and the Catholic Church. And all white people.

Did I leave anyone or anything out?

2 posted on 08/16/2009 5:34:20 PM PDT by OldDeckHand (No Socialized Medicine, No Way, No How, No Time)
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To: sionnsar

We’re all gonna DIE ping!


3 posted on 08/16/2009 5:35:10 PM PDT by Not A Snowbird (What came first? The word, or the thought behind the word?)
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To: OldDeckHand
Anti-Health-Reform mobs, Ann Coulter, and Free Republic, too.

Cheers!

4 posted on 08/16/2009 5:37:43 PM PDT by grey_whiskers (The opinions are solely those of the author and are subject to change without notice.)
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To: OldDeckHand

Swastika -carrying “teabaggers”.


5 posted on 08/16/2009 5:38:07 PM PDT by Carl LaFong (Experts say experts should be ignored.)
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To: OldDeckHand

Yea you left out Rush. You know how he is on mother nature.


6 posted on 08/16/2009 5:40:34 PM PDT by kempo
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To: Delmont

Del, you and Velveeta - even Maurice - are phockhosed....finito.


7 posted on 08/16/2009 5:40:36 PM PDT by ErnBatavia (Impeach now....not next month... now)
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To: OldDeckHand

You forgot white, angry, Christian males.


8 posted on 08/16/2009 5:41:16 PM PDT by majormaturity
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To: OldDeckHand

Did I leave anyone or anything out?

Rush


9 posted on 08/16/2009 5:41:24 PM PDT by millerph
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To: Carl LaFong

No problem, they will float with all of their puffed up self importance.


10 posted on 08/16/2009 5:41:37 PM PDT by Selmore (Except for ending Slavery, Facism, Communism, and Nazism, War never has accomplished anything)
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To: Islander7

Why is it that liberals gravitate towards earthquake zones?


11 posted on 08/16/2009 5:43:53 PM PDT by Cyclops08
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To: Islander7

Must be all that caffeine.


12 posted on 08/16/2009 5:48:31 PM PDT by dangus (I am JimThompson)
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To: OldDeckHand

Don’t forget Sugar and Spice and Everything Nice are now on the
Officially Banned List.

JJ61


13 posted on 08/16/2009 5:50:30 PM PDT by JerseyJohn61 (Better Late Than Never.......sometimes over lapping is worth the effort....)
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To: Islander7

The article said, in part...


The last mega-thrust earthquake along the Cascadia subduction zone, estimated at 9.2, was in January 1700 . It produced a tsunami that reached Japan . Cascadia subduction zone mega-thrust earthquakes happen on average every 400 to 500 years, but they can happen as little as 300 years apart or as much as 800.

[ ... ]

Since the deep tremors were first detected 15 years ago, scientists have been trying to determine what was causing them along the Cascadia subduction zone. Eventually, they concluded that the tremors reflected the slippage of the Juan de Fuca plate under the North American plate.


I remember when the scientists discovered the huge earthquakes from the Cascadia subduction zone, from when I was in Portland (at the time). Shortly thereafter, I saw the freeway bridges getting retrofitted with cable anchors to keep them from tumbling down in such an earthquake.

Now, it seems all along that area (of the Cascadia subduction zone) it’s possible to have an earthquake of “possibly” up to a magnitude 10, or at least larger than any earthquake recorded in US history in the lower 48.

I was reading articles in the paper on how Portland would turn into “two cities” (instead of being just one) after such an earthquake (because the two halves are joined by a lot of bridges).

The two largest earthquakes in US history (in the lower 48) were not in California (not even the San Francisco one) but from the New Madrid fault in the middle of the US, which supposedly made the Mississippi River flow backwards for a short while.

Oh..., and also, it wouldn’t pay to live on the coast of Oregon, if it were to happen right offshore. It might produce a 100-foot tsunami, which would be about impossible to get away from... hoo-boy!


14 posted on 08/16/2009 5:52:17 PM PDT by Star Traveler (The God of Abraham, Isaac and Jacob is a Zionist and Jerusalem is the apple of His eye.)
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To: SandyInSeattle

Sandy, I wish you well and when it hit’s, feel free to find a way to ping me and I help you out.

I live in PA, about a 3 hour drive to the west of Seattle. I’m at the top of my mountain and will be able to see the Straights rise from my house.

I figure that I’ll be able to collect some nice stuff from our beaches as the tide goes back out... this could be fun.


15 posted on 08/16/2009 5:53:28 PM PDT by Gator113 (It's about stupidity, stupid. IMPEACH HERE, IMPEACH NOW.)
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To: Islander7
I'm surprised that the Pacific Northwest has not had more major earthquakes, considering that many subduction zones tend to have some of the strongest earthquakes in the world (read: the 2004 quake that caused the deadly tsunami). If one happens in the Pacific Northwest the potential for tens of thousands dead is quite real, to say the least. And that's on top of the possibility of one of the many Cascade range volcanoes erupts violently (read: Mt. Lassen in 1915 and Mt. Saint Helens in 1980). Mt. Rainier is particularly dangerous because if that erupts the ENTIRE Seattle area is threatened from a combination of pyroclastic or lahar flows.
16 posted on 08/16/2009 5:54:23 PM PDT by RayChuang88 (FairTax: America's economic cure)
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To: OldDeckHand

Tha Savage Nation


17 posted on 08/16/2009 5:54:28 PM PDT by SandRat (Duty, Honor, Country! What else needs said?)
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To: OldDeckHand

Yes, assault weapons.


18 posted on 08/16/2009 5:56:01 PM PDT by Fireone (Where's the birth certificate? Who is this guy?)
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To: SandyInSeattle
We’re all gonna DIE

Only if you are in Seattle.....Oh! Sorry. (:o)

19 posted on 08/16/2009 5:57:01 PM PDT by Blackhawk (God said it, I believe it, That settles it.)
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To: Gator113

Un til the pyraclastic flow from Mt Rainier surrounds your mountain, you might be safe


20 posted on 08/16/2009 6:00:41 PM PDT by bert (K.E. N.P. +12 . fasl el-khitab)
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