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Old 04-12-2008, 04:17 PM
 
Location: Lambs Book of Life
1,592 posts, read 3,135,257 times
Reputation: 625

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Quote:
Swarm of Earthquakes Detected off Central Oregon (http://www.foxnews.com/story/0,2933,350870,00.html - broken link)

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.
Click on the link to read the full article. Yikes! Anyone feel these?
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Old 04-12-2008, 07:36 PM
 
733 posts, read 862,516 times
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I felt not a one. I am not enough of a geologist to say if these portend something in the near future that is much more sinister but I do not believe so. My understanding of the reports is this is occuring near (but not on) a fault on the boundary of a plate whose opposite boundary is the Cascadia Fault we are all keeping a nervous eye on.
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Old 04-12-2008, 08:18 PM
 
Location: The beautiful Rogue Valley
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Actually the cluster of earthquakes is NOT in a place they'd expect, which is what has them out there looking at it, curious.
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Old 04-12-2008, 08:22 PM
 
Location: Southern Oregon
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I wonder what it is going to cause.... since there are no volcanoes in the vicinity... Will there be a tsunami effect?
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Old 04-12-2008, 10:59 PM
 
Location: The beautiful Rogue Valley
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No tsunamis from these - hasn't been a great deal of sea-floor displacement.

The Oregonian has a better article on it:
Quakes off Oregon coast shake up a mystery - OregonLive.com
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Old 04-13-2008, 12:04 AM
 
Location: Oregon Coast
1,184 posts, read 2,356,900 times
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I haven't been feeling them either but noticed them being recorded on the earthquake site. Been keeping my eye out for the sneaker waves too down at the beach. I thought maybe these earthquakes were a reaction to Hawaii's volcanic activity.
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Old 04-13-2008, 12:15 AM
 
56 posts, read 169,506 times
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Juan de Fuca Plate is about to snap and release a devastating energy it's been storing for 3 centirues. All of you on the coast, prepare to meet the Undertaker.
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Old 04-13-2008, 09:46 AM
 
Location: Loving life
103 posts, read 336,150 times
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Sure with my luck, I'll get out there June 20th only to find no towns. Good thing I'm bringing a tent LOL
.
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Old 04-13-2008, 09:50 AM
 
Location: The beautiful Rogue Valley
4,277 posts, read 8,350,594 times
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Quote:
Originally Posted by KOCMOC View Post
Juan de Fuca Plate is about to snap and release a devastating energy it's been storing for 3 centirues. All of you on the coast, prepare to meet the Undertaker.
Or not, of course.

A big subduction zone quake is possible, as they are on the geologic record every 400-600 years and it's been around 300 years from the last one. Strong shaking and localized tsunamis are a possibility in a big subduction quake, but not quite that doom-and-gloom.
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Old 04-13-2008, 11:10 AM
 
Location: Southern Oregon
1,891 posts, read 2,122,788 times
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The biggest concern to a Cascadia Subduction zone quake would be the destruction of hiways leading in and out of these small coastal towns. Allot of these town only have access via hiway 101, so getting emergency crews into the areas would delayed. They are prepared for such a disaster, they have known this for many years.
If and when there was a subduction zone quake you could expect the same type of destruction that was experienced in 2004 with the quake in the Indian Ocean. The only thing you can do is prepare for it, because you will not be able to stop it.
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